93 Decision Citation: BVA 93-05034 Y93 BOARD OF VETERANS' APPEALS WASHINGTON, D.C. 20420 DOCKET NO. 90-01 741 ) DATE ) ) ) THE ISSUES 1. Entitlement to service connection for an organic brain disorder. 2. Entitlement to service connection for a psychiatric disorder. 3. Entitlement to service connection for headaches. 4. Entitlement to service connection for an eye disorder. 5. Entitlement to service connection for chronic obstructive pulmonary disease. 6. Entitlement to service connection for residuals of an injury to the back and right hip, including arthritis. 7. Entitlement to service connection for syncope. 8. Entitlement to service connection for defective hearing in the left ear. 9. Entitlement to service connection for hallux valgus of the right foot with hammertoes. 10. Entitlement to service connection for a heart disorder. 11. Entitlement to an increased rating for retinal detachment of the left eye, currently evaluated as 20 percent disabling. 12. Entitlement to an increased rating for thrombophlebitis of the right leg, currently evaluated as 10 percent disabling. 13. Entitlement to a compensable rating for residuals of pulmonary emboli. 14. Entitlement to a total rating based on individual unemployability due to service-connected disabilities. 15. Entitlement to a temporary total rating based on a hospitalization at a VA facility from August 31 to September 7, 1986. REPRESENTATION Appellant represented by: Disabled American Veterans WITNESSES AT HEARINGS ON APPEAL The veteran and his wife ATTORNEY FOR THE BOARD R. L. Shaw, Counsel INTRODUCTION The veteran had active military service from April 1975 to January 1977 and from August 1977 through May 31, 1980. (See further discussion of service dates below). This matter is before the Board of Veterans' Appeals (the Board) on appeal in part from a November 1986 rating decision by the Cleveland, Ohio, Regional Office (RO) of the Veterans Administration (now Department of Veterans Affairs) (both VA). A communication dated October 30, 1987, was accepted by the RO as a notice of disagreement with ratings assigned for thrombophlebitis of the right leg and pulmonary embolism. A statement of the case on these matters was issued on February 19, 1988. A substantive appeal (VA Form 1-9) was received on October 13, 1988. The appeal also arises in part from a December 1988 rating decision by the VA Regional Office in Huntington, West Virginia (hereinafter RO), which denied service connection or increased ratings for a number of additional disabilities. A notice of disagreement with these determinations was received on January 17, 1989. A supplemental statement of the case was issued on March 1, 1989. A hearing was held at the RO on March 8, 1989; by a decision dated August 4, 1989, the hearing officer confirmed and continued the denials. A supplemental statement of the case was issued on January 5, 1990. A hearing was held before the Board on November 7, 1990, in Washington, D.C. On December 27, 1990, the Board remanded the appeal in order for the veteran to undergo a period of hospitalization for extensive testing by a number of specialists to obtain current information concerning the disabilities at issue. It was also requested that additional treatment records be obtained and that the question of entitlement to service connection for headaches be adjudicated under the provisions of law relating to finality of prior adjudication. Examinations were performed on various dates in January, February and March 1991. By a rating decision of April 8, 1991, the prior adverse determinations were confirmed and continued. A supplemental statement of the case was issued on April 17, 1991. The case was received by the Board on July 1, 1991, and the appeal was redocketed on July 8, 1991. The veteran is currently represented on appeal by the Disabled American Veterans; before October 1991, he was represented by the Veterans of Foreign Wars of the United States. Included among the issues developed and certified for review as part of this appeal is that of entitlement to service connection for a psychiatric disorder. However, it is clear from the medical record that the veteran's current psychiatric problems stem in large part from organic pathology of the brain, the etiology of which is in dispute. Consequently, the issue of entitlement to service connection for organic brain disease is inextricably intertwined with the issue of entitlement to service connection for a functional psychiatric disorder and must be addressed herein. Payne v. Derwinski, 1 Vet.App. 85 (1990). Also included among the certified issues is that of entitlement to a rating higher than 40 percent for right footdrop due to pes cavus. The veteran has indicated on appeal that he does not disagree with the 40 percent rating but does dispute the effective date (February 24, 1988) assigned for it. Consequently, the increased rating issue has been dropped. The issue of entitlement to an effective date earlier than February 24, 1988, has not been developed for appeal and is referred to the RO for appropriate action. The veteran has also disputed the effective date of December 17, 1987, assigned for a 20 percent rating for a detached retina of the left eye. The issue of entitlement to an earlier effective date for this rating is also referred to the RO. In his presentation on behalf of the veteran, the representative of the Disabled American Veterans has raised the additional issue of entitlement to service connection for tinnitus on the basis of acoustic trauma during service. This issue is likewise referred to the RO for appropriate action. CONTENTIONS OF APPELLANT ON APPEAL The veteran contends that a diagnosis of anxiety reaction was reported during service in September 1979 and that the same disorder was diagnosed during a VA hospitalization in June 1988. He asserts that the disorder was also shown on a psychological assessment in September 1988 and that an adjustment disorder with anxiety was noted during a hospitalization at the Roane General Hospital in August 1989. He maintains that the current psychiatric disability, diagnosed as some form of organic pathology, cannot be disassociated from the preceding anxiety reaction. Specifically, he maintains that as a result of clots thrown by the thrombophlebitis in the right lower extremity and resulting pulmonary emboli, he had a number of "strokes" which resulted in the current neurological impairment. He claims that the anxiety disorder matured into a dysthymic disorder and eventually into multi-infarct dementia. He argues that service connection for any current organic brain pathology should be recognized as service connected on a secondary basis pursuant to 38 C.F.R. § 3.310(a) (1992). With respect to headaches, the veteran contends that he began to experience head pain during service after an injury sustained in a fall from a tank at Fort Knox, Kentucky, and that the headaches were documented on various occasions during service. He argues that headaches have been regularly reported by both VA and private physicians since separation and that a diagnosis of post concussion headaches was reported at a VA examination in June 1980. With respect to the eyes, the veteran argues that the records dated from June 1980 to November 1982 show diplopia, cataracts, esotropia and chorioretinitis due to cauterization of the retinas. He maintains that although surgery for detached retina in the right eye was performed before service, he continued to have problems with visual acuity during service and had worse vision at separation than at entrance. He argues that retinal detachment in the left eye during service, for which service connection has been granted, resulted in undue strain on the right eye which contributed to further impairment of visual acuity in that eye and that service connection for the right eye should be granted under 38 C.F.R. § 3.310(a) (1992). With respect to chronic obstructive pulmonary disease, the veteran argues that bronchitis was noted during service on two occasions in 1979 and by a VA physician in February 1988. He claims that examinations in service in 1978 and 1979 showed symptoms of shortness of breath as well as sinus and chest congestion. He states that post service medical records have shown chronic obstructive pulmonary disease since October 1986. Alternatively, he notes that in February 1981 a VA physician suggested that the disorder may be the result of pulmonary embolism. With respect to the back and hip, the veteran contends that the fall from a tank in service resulted in an injury to both areas and ultimately caused the onset of arthritis. He maintains that treatment for pain in the low and middle back was shown in service on two occasions in May 1979 and that clinical assessments of back strain were made. With respect to syncope, the veteran contends that he has recurrent episodes of blackouts and dizziness as a result of the various disorders he claims are caused by the service-connected thrombophlebitis. With respect to his hearing, the veteran contends that an April 1977 audiogram showed a hearing loss in the conversational ranges of both ears. He states that a mixed hearing loss shown at a VA examination in August 1988 represents an increase in hearing deficit from the hearing loss shown in service in 1977. He claims that there has been no intercurrent cause of the hearing loss since service. He attributes the loss of hearing to duty as an offset pressman in service and to acoustic trauma from a hand grenade explosion during basic training. With respect to the right foot, the veteran contends that he has hallux valgus with hammertoes which had its onset during military service. He claims that the disorder was noted in March 1977 on an X-ray report which showed an old ununited fracture of the phalanx of the fifth digit. He states that hammertoes were noted in April 1979. He maintains that the hallux valgus with hammertoes is the result of the foot disability for which service connection has been granted. The veteran contends that he currently has a heart disorder which had its onset as the result of pulmonary emboli originating in the service-connected thrombophlebitis of the right leg. With respect to the rating for residuals of retinal detachment of the left eye, the veteran argues that an increased rating should have been assigned based on a visual field chart dated in February 1981. The veteran contends that an increased rating should be assigned for recurrent pulmonary emboli which have resulted from an injury to the right foot in service and subsequent thrombophlebitis in the right leg. He argues that as a result of the emboli there have been frequent episodes of dyspnea on exertion and chest pain. He claims that while the chest pain has decreased with nitroglycerin, pain in the arm with numbness in the fingers and arms remains. The veteran contends that he is unemployable as the result of his disabilities. He contends further that a temporary total rating should be assigned under 38 C.F.R. § 4.30 (1992) based on a period of hospitalization at a VA facility in August and September 1986. DECISION OF THE BOARD In accordance with the provisions of 38 U.S.C.A. § 7104 (West 1991), following review of all evidence and material of record in the claims file, and for the reasons and bases hereinafter set forth, it is the decision of the Board that service connection for headaches is warranted based on clear and unmistakable error in a rating decision of July 1981 and that a preponderance of the evidence supports the claim for service connection for hallux valgus of the right foot with hammertoes. It is the further decision of the Board that a preponderance of the evidence is against the claims for service connection for an organic brain disorder, a psychiatric disorder, a heart disorder, chronic obstructive pulmonary disease, residuals of an injury to the back and right hip (including arthritis), an eye disorder, syncope, or defective hearing in the left ear. It is the further decision of the Board that a preponderance of the evidence is against the claims for increased ratings for retinal detachment of the left eye and thrombophlebitis of the right leg and for a compensable rating for residuals of pulmonary embolism. It is the further decision of the Board that a preponderance of the evidence is against the claims for a total rating based on individual unemployability due to service-connected disabilities and a temporary total rating based on hospitalization at a VA facility from August 31 to September 7, 1986. FINDINGS OF FACT 1. The evidence required for proper adjudication of the issues on appeal has been obtained to the extent possible. 2. An organic brain disorder was not manifest during active military service or within one year after separation from either period of service. 3. Service connection is in effect for residuals of an injury to the right foot, with pes cavus and drop foot, rated 40 percent disabling; defective vision of the left eye due to retinal detachment, rated 20 percent disabling; thrombophlebitis of the right leg, rated 10 percent disabling; and pulmonary embolism, rated noncompensable. 4. An organic brain disorder was not caused by and is not shown to be related to military service or to a service-connected disability. 5. A chronic functional psychiatric disorder was not manifest during active military service; any current functional psychopathology is not shown to have been caused by or related to military service or to a service-connected disability. 6. The veteran has chronic headaches which unequivocally had their onset during active military service. 7. Service connection for headaches was denied by a rating decision of July 1981; that decision was not adequately supported by the evidence then of record. 8. The veteran was discharged from military service as a result of severe congenital or developmental refractive errors of both eyes. 9. A preservice surgical repair of a detached retina of the right eye was performed in 1970; no subsequent retinal detachment has been documented and residuals of the surgery did not increase in severity during service. 10. No acquired pathology of either eye, including diplopia, cataracts, chorioretinitis or esotropia is shown to have been manifest during active service or to have been caused by or related to service connected residuals of a detached retina of the left eye. 11. Chronic obstructive pulmonary disease was not manifest in service or until several years after separation and is not shown to have been caused by or related to a service-connected disability. 12. A chronic back or hip disability was not demonstrated during service or until many years after separation; arthritis of the back or hips was not demonstrated during service or within one year after separation. 13. A disorder manifested by syncope was not manifest during service or until a number of years after separation and is not shown to be caused by or related to military service or to a service-connected disability. 14. Defective hearing in the left ear was not documented during service or until a number of years after separation. 15. Hallux valgus and hammertoes of the right foot are foot deformities probably caused by residuals of an injury to the right foot during active service. 16. A heart disorder was not manifest in service or until several years after separation and is not shown to have been caused by or to be related to a service-connected disability. 17. Corrected visual acuity in the left eye is reported variously as 20/60 or 20/70; the average concentric contraction of the visual field of the left eye is 12.6 degrees. 18. Thrombophlebitis of the right lower extremity is manifested by recurrent episodes of tenderness and pain; persistent swelling, discoloration, pigmentation, and cyanosis are not documented in the available record. 19. The veteran has experienced recurrent pulmonary emboli originating in thrombophlebitis of the right lower extremity, most recently in August 1989; the current record is insufficient to describe the nature and severity of current disability attributable to the emboli. 20. The veteran completed three years of college and has occupational experience as an offset pressman, security guard and manager; he was last employed in July 1987. 21. The veteran is manifestly unemployable at the present time due to multiple disabilities; his service-connected disabilities alone are not shown to result in unemployability. 22. The veteran was hospitalized at a VA facility from August 31 through September 7, 1986, for treatment of disability which included service-connected pulmonary emboli; no surgery was performed and no joint was immobilized. 23. Except with respect to the issue of entitlement to service connection for an organic brain disease, the issues on appeal are not so complex or controversial as to require referral for an opinion by an independent medical expert. 24. There are no exceptional or unusual circumstances in this case which would have warranted referral of the issues of entitlement to increased ratings for retinal detachment of the left eye and thrombophlebitis of the right leg and entitlement to a compensable rating for pulmonary emboli to the Director of the VA Compensation and Pension Service. CONCLUSIONS OF LAW 1. An organic brain disorder was not incurred in or aggravated by active military service, may not be presumed to have been incurred in active military service, and is not proximately due to or the result of a service-connected disability. 38 U.S.C.A. §§ 1101, 1110, 1112, 1113, 1131, 1137, 5107(a), 7104 (West 1991); 38 C.F.R. §§ 3.307, 3.309, 3.310(a) (1992). 2. A chronic functional psychiatric disorder was not incurred in or aggravated by active military service, and the veteran does not have a chronic functional psychiatric disorder which is proximately due to or the result of service-connected disability. 38 U.S.C.A. §§ 1110, 1131, 5107(a), 7104 (West 1991); 38 C.F.R. §§ 3.303(b), 3.310(a) (1992). 3. The rating decision of July 1981 which denied service connection for headaches involved clear and unmistakable error and is not final; headaches were incurred in peacetime service. 38 U.S.C.A. §§ 1131, 5107(a), 7104 (West 1991); 38 C.F.R. §§ 3.105, 3.303(b) (1992). 4. Preservice residuals of surgical repair of a retinal detachment of the right eye did not increase in severity during service. 38 U.S.C.A. §§ 1110, 1131, 1153, 5107(a), 7104 (West 1991); 38 C.F.R. § 3.306 (1992). 5. The veteran does not have other chronic acquired eye disorder (apart from the service-connected left eye impaired vision secondary to retinal detachment) as a result of disease or injury incurred in or aggravated by active military service or which is proximately due to or the result of service-connected disability. 38 U.S.C.A. §§ 1110, 1131, 5107(a), 7104 (West 1991); 38 C.F.R. § 3.310(a) (1992). 6. Chronic obstructive pulmonary disease was not incurred in or aggravated by active military service and is not proximately due to or the result of service-connected disability. 38 U.S.C.A. §§ 1110, 1131, 5107(a), 7104 (West 1991); 38 C.F.R. § 3.310(a) (1992). 7. Residuals of an injury to the back and right hip were not incurred in or aggravated by active military service and arthritis of the back and hip may not be presumed to have been incurred in service. 38 U.S.C.A. §§ 1101, 1110, 1112, 1113, 1131, 1137, 5107(a), 7104 (West 1991); 38 C.F.R. §§ 3.307, 3.309 (1992). 8. Syncope was not incurred in or aggravated by active military service and the veteran does not have a chronic disorder manifested by syncope which is proximately due to or the result of service-connected disability. 38 U.S.C.A. §§ 1110, 1131, 5107(a), 7104 (West 1991); 38 C.F.R. § 3.310(a) (1992). 9. Defective hearing in the left ear was not incurred in or aggravated by active military service and sensorineural defective hearing in that ear may not be presumed to have been incurred in such service. 38 U.S.C.A. §§ 1101, 1110, 1112, 1113, 1131, 1137, 5107(a), 7104 (West 1991); 38 C.F.R. §§ 3.307, 3.309, 3.385 (1992). 10. Hallux valgus and hammertoes are proximately due and the result of service-connected residuals of an injury to the right foot, currently rated as drop foot. 38 U.S.C.A. §§ 5107(a), 7104 (West 1991); 38 C.F.R. § 3.310(a) (1992). 11. A chronic heart disorder was not incurred in or aggravated by active military service, may not be presumed to have been incurred in active military service, and is not proximately due to or the result of a service-connected disability. 38 U.S.C.A. §§ 1101, 1110, 1112, 1113, 1131, 1137, 5107(a), 7104 (West 1991); 38 C.F.R. §§ 3.307, 3.309, 3.310(a) (1992). 12. The criteria for a rating higher than 20 percent for impaired vision due to retinal detachment of the right eye are not met. 38 U.S.C.A. §§ 1155, 5107(a), 7104 (West 1991); 38 C.F.R. Part 4, Codes 6008, 6080 (1992). 13. The criteria for a rating higher than 10 percent for thrombophlebitis of the right leg are not met. 38 U.S.C.A. §§ 1155, 5107(a), 7104 (West 1991); 38 C.F.R. Part 4, Code 7121 (1992). 14. The criteria for a compensable rating for pulmonary emboli are not met. 38 U.S.C.A. §§ 1155, 5107(a), 7104 (West 1991); 38 C.F.R. Part 4, Code 6810 (1992). 15. The criteria for a total rating based on individual unemployability are not met. 38 U.S.C.A. §§ 1155, 5107(a), 7104 (West 1991); 38 C.F.R. §§ 3.321, 3.340, 3.341, 4.16 (1992). 16. The criteria for a temporary total rating based on hospitalization at a VA facility from August 31 through September 7, 1986, are not met. 38 U.S.C.A. §§ 5107(a), 7104 (West 1991); 38 C.F.R. §§ 4.29, 4.30 (1992). 17. Referral of this appeal for additional opinions from independent medical experts is not warranted. 38 U.S.C.A. §§ 7109, 7104 (West 1991); 38 C.F.R. § 20.901 (1992). 18. The failure of the RO to consider or to document its consideration of the question of the referral of the issues of entitlement to increased ratings for retinal detachment of the left eye and thrombophlebitis of the right leg and entitlement to a compensable rating for pulmonary emboli is harmless error. 38 C.F.R. § 20.1102 (1992). REASONS AND BASES FOR FINDINGS AND CONCLUSIONS I. Service Dates The date of separation from the veteran's second period of active service is shown on the DD Form 214 as April 22, 1980. However, the file contains documents showing that in February 1986 the Department of the Army Board for Correction of Military Records (BCMR) nullified this discharge date and revised the records to show that the veteran remained on active duty through May 31, 1980, that he was placed on the Temporary Disability Retired List (TDRL) as of that date with disability rated 30 percent disabling, and that he was honorably discharged from the Army with severance pay on November 22, 1982. (In a prior decision of September 1980, the BCMR held that the veteran's release from the earlier period of active duty on October 20, 1976, was void and that he remained on active duty until January 20, 1977, when he was returned to the Army Reserve.) The veteran contends that since his revised discharge did not become effective until November 22, 1982, when he was discharged from the TDRL, he is entitled to service connection for disabilities documented before that date. However, the military service requirements which must be satisfied to establish entitlement to VA benefits are defined not in the law governing military discharges (see Title 10 of the United States Code Annotated (U.S.C.A.)) but in the law governing VA operations (Title 38 of the U.S.C.A.). Under the applicable provisions of Title 38, service connection is granted for disability due to disease or injury incurred in or aggravated by "active military, naval or air service." 38 U.S.C.A. §§ 1110 (wartime), 1131 (peacetime) (West 1991). The term "active military, naval, or air service" includes active duty and active duty for training. 38 U.S.C.A. § 101(24) (West 1991). Neither Title 38 nor its implementing VA regulations includes time spent on the TDRL as "active military, naval or air service" for service connection purposes. 38 C.F.R. § 3.6(a)(b)(c) (1992). Consequently, the fact that the veteran is now, as a result of the action of the BCMR, deemed to have been "discharged" from the TDRL and military service on November 22, 1982, is irrelevant to his VA claim. For purposes of the present determinations, the last day countable as active duty is May 31, 1980. II. Analysis A. The Board finds preliminarily that the claims raised by the veteran are well grounded within the meaning of 38 U.S.C.A. § 5107(a) (1992). That is, each is "a plausible claim, one which is meritorious on its own or capable of substantiation." Murphy v. Derwinski, 1 Vet.App. 78 (1990). The volume of the record in this case, the number of issues, and the number and intensity of the contentions advanced by the claimant combine to make this appeal unusually complex and difficult to adjudicate in accordance with the stringent requirements imposed by the United States Court of Veterans Appeals (the Court) with respect to development of the evidence and articulation of adequate justifications for the determinations reached. Mindful of the difficulty of fulfilling its obligations, the Board remanded the claim to the RO for procurement of comprehensive information concerning the veteran's current medical status. Upon the return of the file, the Board referred the claim for an independent medical opinion with respect to the etiology of organic brain syndrome, an issue for which there was adequate clinical data available but inadequate medical authority in the record. Notwithstanding the efforts to develop the record to its fullest, the Board must acknowledge that the studies performed pursuant to the remand are not adequate in every respect. The veteran was not hospitalized in accordance with our instructions, and the studies were conducted in a piecemeal fashion. Proper evaluation of the veteran's current status should of necessity have included examinations by specialists in respiratory and peripheral vascular diseases, and the current status of the thrombophlebitis and the residuals of pulmonary emboli should have been specifically commented upon. The inadequacy of the studies was noted by the representative in the presentation received by the Board on November 8, 1991. The Board would ordinarily remand the claim for the additional studies. However, the veteran indicated in a substantive appeal form, submitted in April 1991, that he would not submit for any further tests. Without his complete cooperation, further attempts to develop the record would be fruitless. The veteran is advised that if at any future time he should change his mind and indicate a willingness to appear for further examinations, the additional studies which could potentially support his claim may be scheduled. In the meantime, the Board has no choice but to conclude that the statutory duty to assist has been satisfied. 38 U.S.C.A. § 5107(a) (West 1991). In this regard we note that, although the representative has requested that an independent medical opinion be obtained with respect to each of the issues on appeal, the Board finds that such a study was required only with respect to the organic brain disorder issue. B. Organic Brain Disease The veteran was evaluated at a VA hospital in May 1985 for complaints of progressive numbness of the hands and neck, scapular pain, poor balance and head pain of about four weeks' duration accompanied by transient visual obscuration. A CT scan showed unusual calcifications with irregularities of the globe. The diagnoses were spastic paraparesis of undetermined etiology and rule out multiple sclerosis. Subsequent VA and private medical records have shown a progressively debilitating neurological disorder manifested by cognitive difficulties and motor and sensory impairments, the etiology of which is not certain (see discussion below). It is not disputed that the neurological symptomatology was not manifest until approximately May 1985, when the veteran was admitted to the hospital for evaluation. It is neither shown nor contended that the disability was manifest during either period of active duty or within one year after separation from either period. Therefore, a grant of service connection on the basis of direct incurrence in service is precluded. 38 U.S.C.A. §§ 1110, 1131 (West 1991). Nor may service connection be granted under the provisions of law by which certain statutorily enumerated disabilities, including organic neurologic diseases, may be presumed to have been incurred in service if shown to be manifest to a degree of 10 percent or more within one year after separation. 38 U.S.C.A. §§ 1101, 1112, 1113, 1137 (West 1991); 38 C.F.R. §§ 3.307, 3.309 (1992). The dispute on appeal involves the etiology of the neurologic disorder. The law permits the granting of service connection for disability which is proximately due to or the result of service-connected disability. 38 C.F.R. §§ 3.310(a) (1992). In this regard, the veteran contends that he has suffered multiple "strokes" as the result of pulmonary emboli originating in thrombophlebitis of the right leg following an injury to the right lower extremity in service. A long history of multiple deep vein thrombi and pulmonary emboli is well documented and is recognized as service connected. Specifically, service connection is in effect for right drop foot secondary to injury, with pes cavus, rated 40 percent disabling since February 1988; for thrombophlebitis of the right leg, rated 10 percent disabling since April 1983; and for pulmonary embolism, rated noncompensable since June 1980. In the absence of evidence in the record as to the cause of the neurologic disability, and in recognition of the fact that the Board may not exercise its own independent medical judgment in evaluating the record, Colvin v. Derwinski, 1 Vet.App. 171 (1991), the Board remanded the case in December 1990 for comprehensive studies by multiple examiners. A psychiatrist examined the veteran in February 1991 and concluded that he had a profound organic brain deficit which was "presumably on the basis of cardiovascular problem, probably related to thrombophlebitis and pulmonary emboli." The diagnosis on Axis I was multi-infarct dementia. Noting that the etiology was unclear and that the disorder was "perhaps" related to the long history of thrombophlebitis and pulmonary emboli, he recommended that a neurologic workup and magnetic resonance imaging scan be performed for clarification. A neurologist who examined the veteran in March 1991 found a "probable" residual of cerebral contusion and "possible" right cerebral infarction in 1988. He noted a "possible" additional functional component to the disability. No magnetic resonance imaging scan (MRI) has been performed. In a further attempt to obtain the necessary clarification, the Board referred the claim to an independent medical expert associated with a medical school and received a lengthy opinion, dated August 31, 1992, in response to several questions posed. The reply is quoted verbatim and in its entirety: I am replying to your request for an independent medical expert opinion on this patient. I have reviewed all of the medical records that were sent to me. I will briefly record the salient features that I have extracted from these records. He is a tall man with long fingers and a high myope. In 1970, at the age of 15, he developed a retinal detachment in the right eye, and at that stage was noted to give a poor history, and to have various inconsistencies in the history. No comment about his intellect was made at that stage however. He underwent a surgical procedure. Neurological examination at that stage was apparently normal. I understand that he was in active military service from April of 1975 to October of 1976, and August of 1977 through May, 1980, having been initially discharged for impaired visual acuity secondary to a further detachment of the retina. I believe that he has also had surgical correction of a retinal detachment on the left. In September, 1976, he apparently fell from a tank and suffered an inversion sprain of the right ankle without fracture. He subsequently complained that he had injured his head in the same accident, though the records at that time give no indication of such an injury. Later medical records comment that the patient complained of having lacerated his head at that stage, and one medical record records a healed scar in the frontal region. One record at a later period comments that he suffered from one episode of concussion, though the date of this is not stated. In November, 1976, he developed the first of multiple episodes of deep vein thrombosis in the right leg, together with recurrent episodes of pulmonary embolism. On the admission of 11/27/76 to Southwestern General Hospital, with one of the episodes of pulmonary embolism, there was a comment that he had not suffered fainting episodes, and neurologic examination was normal. There was deformity of the right foot. More details are not provided. In 1985, there is a VA in-patient evaluation dictated by Dr. Agrawal when the patient was 30 years old. He complained of progressive numbness of the hands, pain in the neck, poor balance, and head pain of 4 week's duration. There was no comment of a speech disorder. The reflexes were excessively brisk, and the plantar responses were extensor; the abdominal reflexes were present. Sensation showed a diminished pin prick over the fingers. He had the ability to walk heel-to-toe. Consideration was given to a diagnosis of multiple sclerosis. He had a CT scan of the head that showed "unusual calcification with irregularities of the globe". The patient did not return to have a myelogram and CSF examination. The patient was admitted to Elyria Memorial Hospital on 7/15/87 for a syncopal episode. He complained of recurrence of chest pain and pain in the right lower extremities. There was pes cavus deformity of the right foot, tenderness of the right calf, but no increase in temperature or swelling. A CT scan of the brain was negative. Neurological examination was said to be "not remarkable". On 9/28/88, he was evaluated for psychological purposes; his verbal IQ was recorded at 73, performance IQ at 70, and full-scale IQ at 70. His memory quota was 70. It was felt that he was attempting to perform in all of the tests. He was noted to have both visual and hearing problems. On 1/23/89, he was evaluated by Cathy Comerci, D.O. He complained of difficulty with hearing and vision, and a worsening speech impediment, as well as memory loss. He had evidence of a marked valgus deformity of the right ankle, with the foot plantar flexed to 40 [degrees] and inability to dorsiflex actively or passively. There were diminished reflexes in the lower extremity on the right, and normal reflexes elsewhere. There was diminished strength of dorsiflexion on the right foot. On 6/12/89, he was examined by Lee Pratt,M. D., a neurologist. The patient recorded a fall from a tank with a concussional head injury and scalp laceration in 1976 with hospitalization at a local Fort Knox Hospital for 4-5 days. Neurological examination revealed a dull patient, with marked dysarthria. Reflexes in the upper limbs were brisk and symmetrical, and those in the lower limbs were hypoactive and symmetrical. No Babinski signs were noted. There was marked decreased vibration and appreciation of light touch and pin prick sensation, mainly in the right lower extremity, while the left lower extremity appeared normal. There was marked pes cavus deformity on the right lower extremity, tremulousness of the outstretched hands, mild dysmetria when doing cerebellar testing. The patient was unable to stand without assistance. He could not walk without using a crutch and his leg brace. He could not stand up from the sitting position without assistance. He was admitted to Roane General Hospital on 8/24/89 because of weakness of the left side. He complained of pain in his chest and left neck with headache. His speech impediment had worsened. He is recorded as having a right foot drop, motor strength of 2/5 in the left arm. He had a spinal tap which showed a protein of 76 mg% and no cells. He had a CT scan of the head without contrast that showed no abnormality. In 1991, audiometric evaluation showed mild to moderate sensory neural hearing loss in both ears. On March 20, 1991, he was seen by Dr. LaPoint. He was recorded as being dysphonic and dysarthric with reduced movements of the left side of the face, and the left upper limb was maintained in extension with flexion of the IP joints. There was major gait disturbance with stiffness of both lower limbs and the need for support on a half crutch. There was moderate tremor of the right upper limb without weakness. There was proximal weakness of the lower limbs, together with weakness of dorsiflexion of the ankles, worse on the right. The right upper limb reflexes were increased, and the remainder was sluggish. There was an extensive plantar response on the left. Response to Questions: 1) What is the proper diagnosis of the organic pathology of the veteran's brain? It is not possible to give a clear diagnosis from the information provided. He appears to have a progressive degenerative disorder of the brain, without abnormality on the CT scan. I believe that the abnormality of the globe is likely to be a post-surgical calcification related to the operations for retinal detachment. The brain itself appears to be normal on repeated CT scans. This makes it more likely that he had a degenerative brain disorder. It does not appear that this is due in any way to recurrent strokes that might have been due to paradoxical embolus from the deep vein thrombosis of his right leg. He gives a history of brain injury though none of this is recorded in the chart. Nevertheless, the progressive nature of the neurological deterioration is not that which is seen in any patient who has had a mild concussive head injury. 2) What is the etiology of this disorder? It is impossible to provide a clear answer. This patient could have a condition such as multiple sclerosis, or a degenerative brain disease such as a spinocerebellar degeneration. 3) Is the evidence of records sufficient to justify in the mind of a fair and impartial individual a conclusion that the organic brain pathology is proximately due to or the result of thrombophlebitis of the right lower extremity or recurrent pulmonary emboli? It appears from the records of competent physicians that this patient does have a progressive organic brain disease. It is quite likely that his initial intellectual level was low, but he does appear to have developed progressive organic disease superimposed upon this. I do not believe there is any support from the medical records that I have received that this patient's organic brain pathology is in any way due to the thrombophlebitis of the right lower extremity or recurrent pulmonary emboli. It seems more likely that he has a degenerative brain disease completely unrelated to any intercurrent event, which would have happened whether or not he had suffered any head injury, pulmonary embolus, deep vein thrombosis, or similar intercurrent event. The Board of Veterans' Appeals is obligated to make a determination with respect to the credibility and probative value of the evidence in the record. Gilbert v. Derwinski, 1 Vet.App. 49 (1990). The present panel finds that, of the opinions of record with regard to the etiology of the neurologic disorder, that of the independent medical expert has the greatest probative value. While the independent medical expert does not offer an unequivocal opinion as to the cause of the neurological deterioration, the crucial finding reported is that the disorder cannot be attributed to the emboli or to head trauma. Unlike the other opinions, it adequately explains the basis for the conclusions. The conflicting medical opinions suggesting a causal connection between the service-connected pathology and the organic brain disease do not cite either medical authority or clinical findings in the record as the basis for this conclusion and must, therefore, be regarded as conjectural. The Board accepts the opinion of the independent medical expert as the basis for the decision reached in this appeal. We would also note that the veteran has submitted absolutely no evidence to substantiate the allegation that the organic brain disease is a maturation of a preexisting neurosis, but the point is moot given the action below with respect to the claim for service connection for psychiatric disease. The Board finds that the evidence relevant to the question of whether the organic brain disease is proximately due to or the result of a service-connected disability is not in relative equipoise and that a preponderance of the evidence is in fact against the claim. 38 U.S.C.A. § 5107(b) (West 1991); 38 C.F.R. § 3.310(a) (1992). C. Psychiatric Disorder The veteran claims that, in addition to the organic brain disease, he has a psychiatric disorder that had its onset in service and was documented in service medical records. Service medical records contain an entry dated in September 1979 in which a clinical impression of anxiety reaction was noted. The veteran was referred for a psychiatric evaluation in October 1979; it was noted that he had multiple complaints, many of which were somatic. A provisional diagnosis of inadequacy feelings was made. After service, the earliest reference to psychiatric complaints is found in VA outpatient treatment records dated from May to October 1987. In an entry dated May 29, 1987, he complained of increased nervousness, depression, and guilt. A history of heavy drinking was noted, though he requested help for his drinking. The diagnosis on Axis I was adjustment disorder with mixed emotional features; alcohol abuse, unspecified; questionable dysthymic disorder, rule out major depression. The diagnosis on Axis II was personality disorder. When seen on June 29, 1987, his complaints included short temper, distrust of his wife's fidelity, anxiety, depressed mood, restless sleep and decreased appetite. He attributed problems of stress to financial problems, three lawsuits, distrust of his wife's infidelity, problems with a detached right retina, and problems with an adopted son. A 7- to 14-day hospitalization in 1985 for questionable anxiety after losing a restaurant business was noted. He was referred for individual psychotherapy. Moderate anxiety neurosis was diagnosed during a VA hospitalization in June 1988. A dysthymic disorder was diagnosed in September 1988 by a private psychologist, J. Ledwell, Ph.D. The post service diagnoses cited above include anxiety neurosis, dysthymic disorder, adjustment disorder with mixed emotional features, and a personality disorder. To the extent that the veteran's symptoms are the result of a personality disorder, the granting of service connection is precluded by law. 38 C.F.R. § 3.303(c) (1992). The common denominator among the records containing the remaining diagnoses is that the symptoms represent a response to various stressful life circumstances, only one of which is physical disability. The statement from Dr. Ledwell describes the symptoms in relation to various disabilities, including eye problems, hearing deficits, pulmonary emboli and psychological problems, but even this statement stops short of attributing the dysthymic disorder directly to the specific disorders for which service connection has been granted. Furthermore, the probative value of the statement is decreased by the fact that, in contradiction of a wealth of other information in the record, Dr. Ledwell found that testing for organic brain damage was negative. When subsequently examined by an examiner for VA purposes in February 1991, no functional psychiatric symptomatology was present. The diagnosis was multi-infarct dementia, and none of the above-mentioned disorders was clinically identified. Neither an anxiety disorder nor a dysthymic disorder was reported to be present. The Board therefore finds that a preponderance of the evidence precludes a finding that the veteran currently has a psychiatric disorder for which service connection can be granted. D. Headaches The veteran's original claim for service connection for post-traumatic headaches was denied by a rating board decision of July 1981 on the grounds that neither a head injury in service nor chronic headache disorder had been documented. The veteran did not appeal. Under the law, an unappealed determination is final and is not subject to revision on the same factual basis in the absence of clear and unmistakable error therein. 38 U.S.C.A. § 7104 (West 1991). However if the evidence establishes clear and unmistakable error, the prior decision will be reversed or amended. 38 C.F.R. § 3.105(a) (1992). The evidence considered by the rating board in its decision of July 1981 consisted of service medical records, the reports of VA examinations in March 1977, June 1980 and February 1981, the reports of two private physicians (L. J. Singerman, M.D., May 1980, June 1980; B. B. Braunstein, December 1980), reports of hospitalizations at private facilities in August 1970, November 1976 to January 1977, and May 1980, and the transcript of a hearing held in February 1981. Service medical records contain an entry dated February 27, 1978, which refers to "very bad headaches" together with other symptoms attributed to a "flu virus." On a report of medical history form dated October 3, 1979, the veteran checked the box indicating "frequent or severe headaches" and reported having received an injury to the head and foot in 1976. In April 1980 he complained of headaches and of a problem with the left eye. Examination was negative. In his May 1980 statement, Dr. Singerman referred to a diagnosis of migraines associated with "ocular syndromes." At a VA examination in June 1980 he complained of having had headaches ever since the injury in service in September 1976; he indicated that they were currently infrequent and occurred about once per year. The headaches were located in the right temple and radiated to the neck and lasted for two days. The diagnosis was residuals of post concussion headaches." Despite the absence of actual treatment records showing the severity of the injury to the head in service, the foregoing evidence is sufficient to describe a pattern of persistent headaches during the period from 1976 to at least June 1980, at which time a VA examination indicated the presence of a headache disorder. The entries are sufficient to give credibility to the veteran's contentions that headaches had been present and recurring. The evidence is conflicting as to the etiology of the headaches in that although the neurologist in June 1980 attributed them to a concussion, there is other evidence attributing them to eye pathology. But regardless of the etiology, the evidence is adequate to establish chronicity. The failure of the rating board to make a finding of chronicity was therefore clearly and unmistakably erroneous, and the prior denial was not final. The evidence pertaining to the period since July 1981 shows continuation of headaches. The veteran in his substantive appeal referred to VA notations of headaches on various dates from May 1983 through June 1988, of which only the entry dated February 19, 1983, is in the current record. Nevertheless, at a VA examination in August 1988, the veteran reported having had a headache "every day since 1976," and severe headaches were reported by Dr. Ledwell in September 1988. The fact that subsequent VA neurological examinations were negative for headaches is not particularly probative, considering the severity of the veteran's other multiple disorders. The Board finds that the rating decision of July 1981 is not final inasmuch as it involves clear and unmistakable error and that a preponderance of the evidence of record supports the granting of service connection for headaches. E. Eye Disorder Service connection was granted by a rating decision of September 1980 for retinal detachment of the left eye. A 10 percent rating was initially assigned but was reduced to noncompensable from November 1, 1980. A 20 percent rating has been in effect since December 1987. The issue presently before the Board is whether the veteran is entitled to service connection for pathology of the right eye and for additional pathology of the left eye, the nature of which is discussed below. With respect to the right eye, we note that service connection for residuals of a detachment of the right eye was denied by a rating decision of September 1980, which was not appealed, but that evidence added to the record since September 1980 satisfies the requirements for recognition as new and material evidence within the meaning of 38 U.S.C.A. § 5108 (West 1991) and 38 C.F.R. § 3.156(a) (1992) such as to warrant a reopening of the claim with respect to the right eye. Colvin v. Derwinski, 1 Vet.App. 171 (1991); Smith v. Derwinski, 1 Vet.App. 178 (1991) A report from the Southwest General Hospital shows that in August 1970 the veteran was hospitalized for surgical correction of a retinal detachment of the right eye, the date of onset of which was not shown. There was a vague history of trauma. Bilateral myopia was noted. Medical records from the first period of service show no defect of either eye other than impairment of refraction requiring 9.75 diopters of correction on the right and 8.25 on the left. Records from the second period of active service show that in February 1978 the right retinal detachment repair was found to have produced a good surgical result. In April 1980, a medical board found that as a result of severe bilateral myopia requiring greater than 8 diopters for correction, the veteran failed to meet induction standards but met retention standards for military service. The disorder was found to have preexisted service. The veteran was separated from service on the basis of eye disability. On April 24, 1980, a scleral buckling procedure to correct a detached retina of the left eye was performed by a private physician. As previously noted, the veteran's service records were subsequently amended to reflect that he was on active duty at the time of this surgery and service connection for residuals of the procedure has been granted. The disability which resulted in discharge from military service consisted of severe refractive error of both eyes, diagnosed as myopia. Under the law, refractive errors of the eyes are regarded as congenital or development defects for which service connection cannot be granted. 38 C.F.R. § 3.303(c) (1992). Consequently, a worsening of the degree of visual impairment due to refractive error during service would not establish aggravation; in any case, such worsening, though claimed by the veteran, is not documented in service medical records. The corrected visual acuity in the right eye was 20/30 minus 4 on June 6, 1980, shortly after separation; this was slightly better than the corrected visual acuity of 20/40 reported in March 1974 for purposes of his initial enlistment. The veteran contends that the record shows evidence of chorioretinitis in the right eye. In this regard, we note that plaques of chorioretinitis due to cauterization were noted in the right eye on a VA examination of September 1983. Subsequent examinations have also noted these chorioretinitis plaques, but no active chorioretinitis has been documented at any time. Chronic active chorioretinitis having its onset during active service would indeed be recognizable as a superimposed disability in the right eye, but the current evidence does not demonstrate such pathology. The chorioretinitis plaques are not shown to have had their onset during active military service. The record does not show an increase in severity of the preservice surgery residuals beyond natural progression of the disorder. Aggravation of the preservice disability is not demonstrated. 38 U.S.C.A. § 1153 (West 1991); 38 C.F.R. § 3.306 (1992). The veteran also contends that he has additional pathology of the eyes related to service, including esotropia, cataracts, and diplopia. The earliest reference to complaints of diplopia in the present record is found in a VA outpatient treatment entry dated September 13, 1982. Another such complaint was noted on November 22, 1982. Subsequent records have shown periodic references to diplopia. Esotropia was first documented in a December 1987 statement from a private physician and has been reported on VA eye examinations in May 1987 and February 1991. Neither is shown to have been manifest during service. There are no clinical records on file which attribute either diplopia or esotropia to the service-connected detached retina repair in the left eye. At the VA examination of May 1989, diplopia was attributed to extraocular motion problems which were possibly related to one or several vascular strokes causing crossed eyes (esotropia). The examiner noted on the report of visual fields testing that there was full motility of both eyes but that there was esotropia from paresis. The diplopia was attributed to multiple cerebral vascular accidents. The veteran likewise has cataracts of post service onset. No cataracts were seen on special VA eye examinations in June 1980, February 1981, or September 1983. Small bilateral cataracts were seen at the examination of May 1989 in both eyes. There is no support in the medical record for the veteran's contentions that the onset of cataracts was related to the retinal detachment in the right eye or that the retinal detachment in the left eye placed undue strain on the right eye. 38 C.F.R. § 3.310(a) (1992). The Board finds that a preponderance of the evidence is against the claim for service connection for a disorder of either eye. F. Chronic Obstructive Pulmonary Disease The record shows chronic obstructive pulmonary disease of moderate to marked degree. The disputed matters involve the point of onset of the disorder and its relation to the service-connected disorders. The earliest evidence concerning the veteran's respiratory status is found in the report of an August 1970 admission to the Southwest General Hospital, where it was reported that he had had some asthma as a child between the ages of 2 and 10 for which he was hospitalized about five times but that he had had no trouble with the disorder since the age of 10 and was able to run and play without wheezing or shortness of breath. Service medical records show that the veteran was seen on September 5, 1978, at a pulmonary clinic in connection with a physical profile after two pulmonary emboli. He complained of increased shortness of breath after running 1 mile and having to breathe deeply after climbing a flight of stairs. He complained of chest pain which was made worse by deep breathing; he claimed that he had been told that this was related to scarring due to previous "injury." Examination was negative. In May 1979 he complained of being short of breath since November 1976, when he had a pulmonary embolism. Examination was normal, including chest X-ray. In September 1979 he was seen for central chest pain and difficulty breathing. The chest was clear to percussion and auscultation. Service medical record entries received directly from the veteran himself dated in September 1979 show a diagnosis of bronchitis. A physical profile was issued in September 1979 because of "bronchitis chronic." On a report of medical history dated October 3, 1979, the veteran checked the box indicating a history of shortness of breath. While the bronchitis noted in September 1979 was characterized on the profile report as chronic, the finding of chronicity may be legitimately questioned. The word bronchitis was used on only one other occasion in available records, again in 1979. It did not include a description of manifestations sufficient to identify a disorder properly diagnosable as bronchitis, but even if the diagnosis of bronchitis was correct, the abnormality was not shown to have been present over a period of time and thus may equally well be designated as acute. When the fact of chronicity in service is not adequately supported, a showing of continuity after discharge is required to support the claim. 38 C.F.R. § 3.303(b) (1992). Post service records do not show episodes of recurrent bronchitis or contain any findings suggesting that the earlier bronchitis may have been a factor in the post service development of chronic obstructive pulmonary disease. The veteran has cited a number of specific entries over the years when shortness of breath was documented, but these appear to have been symptoms associated with treatment for pulmonary emboli rather than chronic obstructive pulmonary disease. The veteran contends that his chronic obstructive pulmonary disease is secondary to pulmonary emboli. During the period since the initial diagnosis of chronic obstructive pulmonary disease, the veteran has undergone numerous workups at both private and VA facilities (the Elyria Memorial Hospital in July 1987, the Roane Hospital in November 1988, August 1989 and March 1991, and a VA hospital in June 1988). He has undergone VA compensation examinations in August 1989 and February 1991. The reports of these studies are negative for any indication whatsoever that the onset of the disorder has been attributed by medical personnel to deep vein thrombophlebitis or consequent pulmonary emboli. The only evidence suggesting an etiology of any kind consists of reports from the Roane Hospital in November 1988, which contained a diagnosis of "COPD smoking" and August 1989, which cited a past history of COPD secondary to smoking. The preponderance of the evidence of record precludes a finding that chronic obstructive pulmonary disorder had its onset during service or is related to respiratory symptomatology during service. A preponderance of the evidence likewise is against a finding that the onset of chronic obstructive pulmonary disease is a consequence of a service-connected disability. 38 C.F.R. § 3.310(a) (1992). G. Injury to the Back and Right Hip, Including Arthritis The veteran claims that he injured his back and right hip in the same fall from a tank as that which caused injuries to the right foot and head. The sole historical reference to that injury in available service medical records (in the medical history report of October 1979) contained no reference to injury to the back or right hip. On a VA examination in March 1977, between the two periods of active service, the veteran complained that his back hurt most of the time but did not refer to a specific injury. No examination findings or diagnoses regarding the back were recorded. During the second period of service the veteran was seen in April 1979 for complaints of intermittent low back pain as well as midback pain. A clinical assessment of back strain was noted. In May 1979 it was noted that he still had back pain. The clinical assessment at that time was mild back strain. On the medical history report of October 1979 the veteran specifically denied recurrent back pain and bone, joint or other deformity. Postservice medical records show that at a VA examination in August 1988, X-rays showed degenerative changes of the cervical, thoracic and lumbosacral spine segments with mild degenerative joint disease of both hips. Despite the occurrence of a low back strain in 1979, the subsequent medical evidence shows no continuity of back symptomatology between 1979 and August 1988. Consequently, continuity of symptomatology is not shown. 38 C.F.R. § 3.303(b) (1992). Arthritis is one of the disorders enumerated in the statute as eligible for presumptive service connection, but arthritis was not documented before June 1988. 38 U.S.C.A. §§ 1101, 1112, 1113, 1137 (West 1991); 38 C.F.R. §§ 3.307, 3.309 (1992). While the veteran claims to have had back problems continuously since service, no complaints or defects regarding the back were documented in medical reports between 1979 and 1988. Likewise, there is no basis in the record for attributing the ultimate onset of degenerative joint disease and arthritis to the reported fall from a tank during service. The Board finds that a preponderance of the evidence precludes a finding that the veteran has residuals of any injury to the back sustained in service or that the current degenerative joint disease with arthritis is related to service. H. Syncope The veteran contends that he experiences dizziness and blackouts and that the first such incident occurred during active military service when he was stepping out of a car, shortly after he sustained a head injury in service. Service medical records, as noted above, contain no reports describing the actual injury to the head or treatment for it; the only reference to the incident is found in a medical history form dated in October 1979. The same medical history report indicates that the veteran checked "yes" in the box for "dizziness or fainting spells," though no additional information was provided, and no clinical records of fainting or dizzy spells in service are of record. The earliest post service reference to such symptomatology is found in the report of a hospitalization in July 1987 at the Elyria Memorial Hospital, where the veteran was admitted after passing out. It was noted that before passing out he experienced chest pains and dyspnea and had pain in the right lower extremity. Examination, including skull X-ray, chest X-ray, lung scan and CT scan of the brain, was negative. He was discharged the day after admission with a diagnosis of syncope, probably vasomotor in origin. Subsequent records show that the veteran was seen at the Roane Hospital in November 1988 primarily for pulmonary emboli, and that he had had "syncopal-type feelings" accompanied by chest pain at the time of admission. His blood pressure was slightly low and sublingual nitroglycerin helped significantly. On a VA examination of June 1989, he related that he had been hospitalized in service for a brief syncopal episode and that some abnormality had been noted on a CT scan. There was no current diagnosis of syncope. On a general VA medical examination in March 1991 he reported passing-out spells which occurred upon standing up and usually lasted 2 to 3 minutes. A diagnosis of syncope of unknown cause was reported. The lack of documentation of episodes of syncope during service or for many years after service precludes a finding that the veteran has a chronic syncope disorder of service onset. Even if we were to concede that a fainting spell did occur in 1976 in the manner claimed by the veteran, continuity of symptomatology after that episode is not documented. The evidence is not specific as to the cause of the fainting episodes first documented in the post service record in July 1987. In the absence of a documented etiology, the record is insufficient to support a finding that the veteran has a chronic syncope disorder which is caused by or proximately due to a service-connected disability. 38 C.F.R. § 3.310(a) (1992). Furthermore, as should be clear from other portions of this decision, to the extent that the syncopal episodes may be related to either cardiovascular or neurological disease, the actions taken herein with respect to those disabilities likewise precludes a grant of secondary service connection. I. Defective Hearing Service connection may be granted for impairment of hearing at the frequencies of 500, 1,000, 2,000, 3,000 and 4,000 Hertz, as measured by pure tone and speech recognition criteria. However, hearing status shall not be considered service connected when the thresholds for the above frequencies are all less than 40 decibels; the thresholds for at least three of these frequencies are 25 decibels or less; and speech recognition scores using the Maryland CNC Test are 94 percent or better. 38 C.F.R. § 3.385, effective on and after May 3, 1990. Although these regulatory criteria did not become effective until May 3, 1990, a VA adjudication manual in effect for many years previously contains a substantially equivalent standard. See VA Manual M21-1, § 50.07. VA audiograms dated in August 1988 and February 1991 show that at the present time the veteran has a hearing loss in each ear which satisfies the regulatory criteria as service connectable defective hearing. The issue, therefore, involves the time of onset of this hearing impairment. According to the available record, electronic testing of hearing acuity was performed on three occasions before August 1988. On examination for enlistment in March 1974, the pure tone hearing thresholds were 10 decibels or less in each ear at each frequency tested from 500 to 6,000 Hertz. On examination for separation in June 1976, there were pure tone thresholds in the right ear of 35 decibels at 500 and 1,000 Hertz and of 15 decibels at 4,000 Hertz. The thresholds in the left ear were 15, 15, and 5, respectively, at these frequencies. On a medical history report dated in September 1979 the veteran checked off the box indicating that he had a prior history of hearing loss. He was currently working as an offset pressman. On August 2, 1979, the pure tone thresholds were 25 decibels in the right ear at 1,000 Hertz and 15 decibels or lower at all other frequencies tested for that ear. In the left ear, a threshold of 35 decibels was reported at 500 Hertz; the thresholds at the other frequencies were 15 decibels or lower. Although it is arguable that the test results of June 1976 showed defective hearing in the right ear under the M21-1 standard since three or more thresholds of 25 or lower were not recorded, the test results on August 2, 1979, were indicative of a greater level of hearing acuity and were within the manual standard. The hearing loss arguably shown in the right ear in June 1976 must be regarded as temporary, given the subsequent improvement (we say arguably because the test scores for that date are not complete; no thresholds were reported at 2,000 or 3,000 Hertz). Consequently, the veteran is not shown to have had defective hearing of the requisite degree until 1988. The representative referred in his presentation of November 8, 1991, to an audiogram dated in April 1977, but no such audiogram is of record; it appears that he was instead referring to the audiogram of August 2, 1979, which showed normal hearing. The evidence does not support the allegation that the hearing loss reported many years after his separation is related to work as a pressman during service or to an explosion in basic training; in any case, that explosion is not documented in the record. The Board finds that a preponderance of the evidence of record precludes a finding that defective hearing was manifest during service or that sensorineural defective hearing was manifest to a degree of 10 percent within one year after separation. 38 U.S.C.A. §§ 1101, 1110, 1112, 1113, 1131, 1137 (West 1991); 38 C.F.R. §§ 3.307, 3.309 (1992). J. Hallux Valgus of the Right Foot with Hammertoes By a rating decision of July 1981, service connection was granted for residuals of an injury to the right foot with pes cavus; a 10 percent rating was assigned under Diagnostic Code 5278 from April 23, 1980. The rating was later raised to 20 percent from May 27, 1986. In a decision dated August 4, 1989, a VA hearing officer raised the rating to 40 percent under Diagnostic Code 5167 on the basis that current evidence showed a drop foot on the right. The effective date of the 40 percent rating was initially assigned as October 26, 1988, later revised to February 24, 1988. The current grant of service connection for the right foot is limited to residuals of an injury to the foot with pes cavus. The service records show that the veteran was referred for an orthopedic evaluation in September 1976 after he twisted his right ankle the night before. There was marked swelling laterally with ecchymosis and tenderness. X-ray examination showed no fracture. The clinical assessment was moderate strain of the right ankle. In September 1978 he complained of right ankle pain on running and an X-ray showed a bone fragment in the distal medial malleolus due to old injury with possible necrosis. He was referred to a podiatry clinic, at which time a history of a severe inversion sprain of the right ankle was noted. X-rays showed a unilateral high arch of the right foot with many loose bodies of the medial ankle. The clinical assessment was unilateral cavus foot with ankle pain secondary to loose body and chronic sprain. Post service medical records show that at a VA examination of May 1986 there was a high cavus arch of the right foot with moderate clawing of the toes. The ankle was stable. X-rays showed a rather severe valgus deformity of the 1st, 2nd, 3rd and 4th digits with medial angulation resulting in a broad right foot. A right footdrop was noted in a VA outpatient entry dated in February 1988. The veteran underwent a VA orthopedic examination in May 1989. A varus deformity was noted, as was a calcaneal valgus deformity and pes cavus with dropped metatarsal heads. There was a club toe deformity secondary to flexion contracture of the toes. The diagnoses were calcaneal valgus and cavus deformity of the right foot, footdrop deformity secondary to peroneal nerve palsy, plateau deformity, and callous deformity beneath the head of the 1st and 5th metatarsal bones as a result of cavus deformity and dropped metatarsal heads. A sequential review of the foregoing medical records discloses progressively worsening deformity of the bones of the right foot during the period since the initial injury to the foot in 1976. The RO has justified the denial of the claim for hallux valgus and hammertoes on the basis that neither deformity was manifest during service, but this rationale, though factually accurate, does not dispose of all of the legal grounds by which the claim must be considered. Service connection may also be granted for disability which is proximately due to or the result of service-connected disability. 38 C.F.R. § 3.310(a) (1992). The available medical reports do not identify any basis in the record for disassociating the hallux valgus and hammertoes from the other foot deformities for which service connection had already been granted. To the contrary, it appears that the hallux valgus and hammertoes are the result of deformity of the metatarsals which resulted in the cavus deformity and dropped metatarsal heads. Accordingly, we find that the evidence of record, with particular consideration of the report of the VA orthopedic examination of May 1989, supports the granting of secondary service connection for both hallux valgus and hammertoes. K. Heart Disorder The record includes reports from the Roane General Hospital beginning in November 1988 showing that the veteran's symptoms included anginal chest pain which responded to nitroglycerin. Atherosclerotic heart disease was diagnosed. Subsequent medical records from both VA and private facilities are replete with references to well-documented atherosclerotic cardiovascular disease. Consequently, as with chronic obstructive pulmonary disease, the question remaining is when the disorder had its onset. Atherosclerotic heart disease is eligible for presumptive service connection under the law. 38 U.S.C.A. §§ 1112, 1113, 1137; 38 C.F.R. §§ 3.307, 3.309 (West 1991). Service medical records contain various references to chest pain and shortness of breath associated with pulmonary emboli (a more complete description of the symptoms due to pulmonary emboli is found in Subsection M of this decision). In September 1978 the veteran related that he had a history of a "heart attack" and two "strokes." He gave a similar history in September 1979, the examiner noted that the history was "variable and nonconfirmed." Examination and treatment records from both periods of active service are otherwise negative for references to heart abnormality. After service, the veteran received thorough hospital workups at private facilities (St. John and West Shore Hospital, September and October 1986; Elyria Memorial Hospital, July 1987, including a normal echocardiogram) and VA hospitals (May 1985 and August to September 1986) for various complaints, but no heart defect was reported. The negative findings on these evaluations provide compelling evidence that no cardiovascular disease was present until a number of years after separation from service. The record thus provides no basis for the granting of either direct or presumptive service connection. The veteran bases his appeal in part on the contention that the onset of heart disease is the result of recurrent pulmonary emboli for which service connection has been granted. The evidence of record, however, which includes the reports of numerous hospitalizations and examinations, provides no medical support for this allegation. There is no medical document which intimates the presence of a connection between the two disabilities. The veteran's own lay opinion that his current disability is due to service or to a service-connected disability is insufficient to support the claim. Espiritu v. Derwinski, 2 Vet.App. 492 (1992). Consequently, a preponderance of the evidence is against a finding that the veteran has a heart disorder which is proximately due to or the result of a service-connected disability. 38 C.F.R. § 3.310(a) (1992). L. Increased Rating for Retinal Detachment of Left Eye The only eye disability for which service connection is in effect consists of residuals of the left retinal detachment which was surgically repaired in April 1980. A 10 percent rating was assigned for that disability from June 1, 1980, under Code 6008, which provides ratings of 10 percent to 100 percent for detachment of the retina on the basis of resulting impairment of visual acuity or visual field loss, pain, rest requirements, or episodic incapacity. An additional 10 percent is combined during the continuance of active pathology. Ten percent is the minimum evaluation during active pathology. 38 C.F.R. Part 4, Code 6008 (1992). The veteran was examined by a private optometrist, J. Selario, O.D., on December 16, 1987. It was indicated that there was extensive myopic stretching of both eyes by funduscopic examination. Alternating esotropia was noted. Corrected visual acuity was 20/30 in each eye. The diagnoses for each eye were extreme myopia, astigmatism, esotropia and cataracts. On measurements of visual fields, the concentric contraction in the left eye was to no less than 25 degrees at any of the meridians. The veteran underwent another eye examination by a private examiner in November 1988. He complained that his vision was poor with his present glasses. Corrected visual acuity was 20/70 minus on the left and 20/50 on the right. The visual fields on the left were constricted to no less than 20 degrees at any meridian. Very high myopic astigmatism was diagnosed. The veteran underwent a VA examination in May 1989. He complained of flashes of light in the left eye. Slit lamp examination showed buckling and enlarged vessels in both eyes. The corrected vision was 20/50 minus 1 in the left eye with 14 diopters of correction and 20/60 plus 3 in the right eye with 10.5 diopters of correction. The extent of concentric contraction was less than 5 degrees at the meridians from 135 to 225 degrees in the left eye. The rating was raised from 10 percent to 20 percent by a rating decision of October 1989 and was made effective from December 16, 1987, the date of the examination by a private examiner. The rating was assigned under Diagnostic Code 6080, which provides a 20 percent rating for unilateral concentric contraction of the visual field to 15 degrees but not to 5 degrees. Under this code, a 30 percent rating may be assigned for concentric contraction to 5 degrees. It is clear that the visual field constriction reported in December 1987 and November 1988 did not support a rating higher than 20 percent under this code. The visual fields examination of May 1989 showed more concentric contraction than that reported on the two prior occasions but the average concentric contraction at the eight principal meridians was 12.6 degrees. In the absence of contraction to 5 degrees or less, no rating higher than 20 percent may be assigned for unilateral involvement. The veteran's potential entitlement to a rating higher than 10 percent must also be considered under the codes pertaining to impairment of central visual acuity. The corrected visual acuity in the veteran's left eye was reported as 20/30 in December 1987, 20/70 minus in November 1988, 20/50 minus 1 in May 1989 and 20/60 in February 1991. The visual acuity of the right eye is also severely impaired, but since service connection is not in effect for that eye, the visual defect on the right may not be considered; for purposes of application of the VA rating criteria, the vision in that eye must be deemed to be 20/40 or better. Diagnostic Code 6079 provides that when corrected visual acuity is 20/70 in one eye and 20/40 in the other eye, a rating of no more than 10 percent is warranted. In order for the veteran to receive a rating higher than the current 20 percent based on unilateral central visual acuity impairment, his vision would have to be 10/200, in which case the rating would be 30 percent. This degree of impairment is not present. The veteran's claim must also be considered under the rules regarding extraschedular evaluations. Under 38 C.F.R. § 3.321(b)(1) (1992), an extraschedular evaluation commensurate with the average impairment of earning capacity due to the service-connected disability may be assigned if the case presents an exceptional or unusual disability picture, with such related factors as marked interference with employment or frequent periods of hospitalization, as to render impractical the application of the regular schedular standards. In this case, the veteran's visual problems are worsened substantially by diverse nonservice-connected pathology of both eyes. Even with this added pathology, he was considered by the VA examiner in February 1991 to be "holding on very well indeed" and to be in no need of active treatment. In these circumstances, no basis for an extraschedular rating is shown. Likewise, the disability picture does not more nearly approximate that required for the next higher rating of 30 percent. 38 C.F.R. § 4.7 (1992). L. Thrombophlebitis of the Right Leg Thrombophlebitis of the right leg was first documented in records from the Southwest General Hospital dated in November and December 1976, where the veteran was admitted after the acute onset of chest pain and difficulty breathing. A pulmonary embolus of the left lung was also noted. He was readmitted in January 1977 for a recurrence of symptoms. Minimal leg soreness was evident but a venogram showed no thrombosis this time. Records from the second period of service show that the veteran continued to have complaints involving the right side of the ankle. In November 1977 he was referred to a pulmonary clinic because of chest pain. It was noted that he had been taking anticoagulation since the prior hospitalizations. It was determined in December 1977 that no further treatment was warranted and that no duty limitation was required because of deep vein thrombosis. In September 1978 he was again seen at a pulmonary clinic. He complained of shortness of breath after running 1 mile and of having to breathe deeply after climbing stairs. He was seen for further complaints of this nature in May 1979. Postservice medical evidence shows that chronic thrombophlebitis was diagnosed on a VA examination of June 1980. Tenderness of the calf was noted, but deep circulation was okay. The veteran was admitted to a VA hospital in February 1985 for possible pulmonary embolism. No thrombophlebitis was noted at that time. No redness, swollen vessels or calf tenderness were reported on a VA examination in August 1988. Deep vein thrombosis of the right leg and thigh was documented during a VA hospitalization in June 1988 with deep cordlike veins palpable. There was mild warmth and early phlebitis. A private physician, C. Comerci, D.O., reported that Doppler studies in October 1988 had been negative for deep vein thrombosis. Records from the Roane General Hospital describing admissions in November 1988, August 1989 and March 1991 are of record. Deep vein thrombosis with resulting pulmonary emboli to the bilateral apical and left lateral lung areas were diagnosed. The symptoms in August 1989 also included right leg pain which was like what he had when he had a blood clot. Anticoagulation was given. The diagnoses included chronic deep vein thrombosis with history of pulmonary embolism. At the time of admission in March 1991 the veteran's complaints included right leg pain. The veteran underwent multiple studies at a VA facility in February and March 1991 pursuant to the Board remand. On the general medical examination it was noted that there was "evidence of chronic thrombophlebitis." The diagnoses on orthopedic examination included history of multiple episodes of thrombophlebitis in the right lower extremity. No specific findings were reported. At the VA examination of May 1989, the orthopedic examiner noted tenderness over the right ankle joint. The neurological examiner noted that the right lower extremity was warm into the thigh and that there was normal hair growth. Service connection was granted for thrombophlebitis by a rating decision of July 1981; a noncompensable rating was assigned. A compensable rating of 10 percent was subsequently assigned from April 6, 1983, under Code 7121. Under that code, a 10 percent rating is provided for unilateral thrombophlebitis manifested by "persistent moderate swelling of leg not markedly increased on standing or walking." The next higher rating of 30 percent is assigned when there is "persistent swelling of leg or thigh, increased on standing or walking 1 or 2 hours, readily relieved by recumbency...moderate discoloration, pigmentation or cyanosis." 38 C.F.R. Part 4, Code 7121 (1992). The record shows that active thrombophlebitis required hospitalization in June 1988, November 1988, and August 1989 and that symptoms suggestive of thrombophlebitis were manifest during the hospitalization of March 1991. Anticoagulation on these occasions has been successful in relieving the symptoms. The record contains scant information concerning the status of the disorder during the intervals between the hospitalizations. The orthopedic examiner who saw the veteran in May 1989 noted tenderness over the right ankle joint and a neurologist indicated that the lower extremity was warm to touch. A Doppler study in October 1988 was negative for deep vein thrombosis. The VA examiner of March 1991 noted "evidence of chronic thrombophlebitis" but did not indicate what that evidence was. The record does not show the specific symptoms required for a 30 percent rating, including persistent swelling, discoloration, pigmentation or cyanosis. The paucity of examination findings concerning the current status of the disorder highlights the need for a current examination. Ordinarily the Board would remand the claim again for a detailed peripheral vascular examination in accordance with the requirement imposed by the United States Court of Veterans Appeals that such development be performed when the record before the Board is clearly inadequate. Littke v. Derwinski, 1 Vet.App. 90 (1990). However, since the veteran has indicated that he has no intention of submitting to further tests, the Board has no choice but to decide the claim on the basis of the evidence already of record. Without further information, the fact that several hospitalizations have been required since 1988 is not sufficient in and of itself, in the context of all of the evidence of record, to justify the assignment of an increase on either a schedular or extraschedular basis. 38 C.F.R. § 3.321(b)(1) (1992). Consequently, the Board finds that a preponderance of the evidence is against the claim for an increased rating for thrombophlebitis. M. Pulmonary Embolism Service connection for pulmonary embolism as disability secondary to thrombophlebitis was granted by a rating decision of November 1986. A noncompensable rating was assigned by analogy to serofibrinous pleurisy under Code 6899-6810. Under Code 6810, chronic fibrous pleurisy following lobar pneumonia and other acute diseases of the lungs or pleural cavity, without empyema, is considered a nondisabling condition, except that a 10 percent rating may be assigned for "diaphragmatic pleurisy, pain in chest, obliteration of costophrenic angles, tenting of diaphragm." 38 C.F.R. Part 4, Code 6810 (1992). A 10 percent rating is also assignable under Code 6811 for moderate purulent pleurisy (empyema) when there is some embarrassment of respiratory function. A 30 percent rating is assignable for moderately severe disability, with residual marked dyspnea or cardiac embarrassment on moderate exertion. 38 C.F.R. Part 4, Code 6811 (1992). The veteran experienced confirmed pulmonary emboli in November 1976, January 1977, August 1986, November 1988 and August 1989, as previously reported. A description of the symptoms resulting from pulmonary emboli is found in the reports of hospitalizations at the Roane Hospital in November 1988 and August 1989, the dates of the two most recent emboli. In November 1988 the veteran was admitted with leg pain of one week's duration followed by left lower sternal border "pop" which caused severe pain in the left chest and arm. A Doppler study showed venous insufficiency but no clot. The chest pain responded to sublingual nitroglycerin. It was noted that morphine also helped but that it was "difficult to distinguish what caused what." He was discharged several days later with numerous diagnoses, including pulmonary emboli, angina, chronic obstructive pulmonary disease. A lung scan showed pulmonary emboli in the left upper lobe and lateral lung fields and right upper lobe. The August 1989 admission was likewise prompted by pain in the chest; there was radiation to the left neck. The chest pain decreased with nitroglycerin but the arm pain remained. He claimed that his face, neck and arm had swelled up. He had also had right leg pain which had waxed and waned, anticoagulation was started. In March 1991 the symptoms at admission consisted primarily of dyspnea with right-sided chest pain accompanied by pain in the right medial thigh. A profusion scan showed a low probability of pulmonary embolism. During the hospitalization the veteran stated that the pain was in the sternal area with deep breathing. Breath sounds were diminished in the left lung fields. The veteran cites the chest pain and dyspnea on exertion as the disability which he believes entitles him to a compensable rating for pulmonary emboli. At face value, the symptoms recorded during the hospitalizations for actual emboli appear to be significantly disabling. The veteran claims that he has exertional dyspnea and chest pain even between the episodes of acute emboli, and his testimony in this regard must be considered as relevant evidence. Nevertheless, the record demonstrates unequivocally that the veteran's debilitated medical status is due in part to a number of disorders which can produce the symptoms cited, including atherosclerotic heart disease and chronic obstructive pulmonary disease. Even the veteran's treating physician was not certain what caused what. It is clear that, to sort out the tangle of overlapping symptoms, further clinical examination will be needed and medical opinions based on those studies will be critical. Little can be done in the meantime to adjudicate the claim further. Any compensable schedular or extraschedular rating assigned for pulmonary emboli must reflect an objective application of the criteria to the evidence of record following adequate development. Since the veteran is currently unwilling to report for the requisite studies, the Board has no choice but to deny the claim. N. Total Rating Based on Individual Unemployability A claim for a total rating based on individual unemployability was received in October 1987. The veteran reported that he had completed three years of college and had received vocational training as a mason in 1984 and 1985. He reported occupational experience as a security guard, manager, and offset pressman. He had last worked full time in July 1987, when he became too disabled to work. A total disability rating for compensation may be assigned where the service-connected disabilities are less than 100 percent disabling when it is found that such disabilities are sufficient to produce unemployability without regard to advancing age. The veteran in this case does not satisfy the schedular requirements for an award based on individual unemployability in that he does not have a single service-connected disability ratable at 60 percent or more, or two or more disabilities (one of which is ratable at 40 percent or higher) combining to 70 percent or more. 38 C.F.R. § 4.16(b) (1992). We note in this regard that, while headaches and hallux valgus with hammertoes have not yet been rated by the RO, the outcome of the appeal will turn on the question of employability. In any case, it is not likely, based on the present record, that the veteran will meet the schedular requirements even after these disabilities are rated. The record clearly establishes that the veteran is manifestly incapable of pursuing substantially gainful employment at the present time. However, the disorders productive of the most severe disablement, particularly the organic brain disease, heart disease, and chronic obstructive pulmonary disease, are not service-connected. The service-connected disorders, which affect the left eye, right lower extremity and vascular system, did not preclude employment by the veteran during the first several years after separation. As explained herein, the extent of increased disability due to the recurrences of thrombophlebitis and pulmonary emboli at the present time cannot be determined from the available record. Until the necessary studies can be completed, the Board must find that a preponderance of the evidence is against the claim for a total rating based on individual employability. O. Temporary Total Rating Based on Hospitalization at a VA Facility from August 31 to September 7, 1986. The veteran was admitted to a VA hospital on August 31, 1986, after the onset of sharp right-sided chest pain which was preceded by leg and back pain following a fall the week before. The chest pain increased with inspiration and cough and did not radiate. The chest was exquisitely tender over the lower left rib cage and the pain was accompanied by shortness of breath. An electrocardiogram showed no evidence of ischemic disease. A VQ scan showed a high probability of pulmonary embolus. Anticoagulants were given. The veteran was discharged on September 7, 1986, with a diagnosis of pulmonary embolism. VA regulations permit the assignment of a total rating for a period of 1, 2 or 3 months following hospital discharge if the hospital treatment for a service-connected disability resulted in surgery necessitating post hospital convalescence, surgery with severe postoperative residuals shown at hospital discharge, or immobilization by cast, without surgery, of one or more major joints. Since the veteran did not undergo surgery during this hospitalization and did not have a joint immobilized by a cast, there is no basis for the assignment of a total rating under this section. 38 C.F.R. § 4.30, as in effect before March 1, 1989. The law also permits the assignment of a temporary total rating based on hospitalization when it is established that a service-connected disability has required hospital treatment for a period in excess of 21 days or hospital observation for a period in excess of 21 days. 38 C.F.R. § 4.29 (1992). In this case, the hospitalization in question lasted a total of eight days only. ORDER Service connection for headaches is granted. Service connection for hallux valgus of the right foot with hammertoes is granted. Service connection for an organic brain disorder, chronic obstructive pulmonary disease, a psychiatric disorder, an eye disorder (separate from residuals of retinal detachment of the left eye), residuals of an injury to the back and hip with arthritis, syncope, defective hearing in the left ear, and a heart disorder is denied. Increased ratings for retinal detachment of the left eye, thrombophlebitis of the right leg, and pulmonary emboli are denied. A total rating based on individual unemployability and a temporary total rating based on hospitalization at a VA facility from August 31 to September 7, 1986, are denied. BOARD OF VETERANS' APPEALS WASHINGTON, D.C. 20420 STEPHEN L. WILKINS U. H. ANG, M.D. DANIEL J. STEIN NOTICE OF APPELLATE RIGHTS: Under 38 U.S.C.A. § 7266 (West 1991), a decision of the Board of Veterans' Appeals granting less than the complete benefit, or benefits, sought on appeal is appealable to the United States Court of Veterans Appeals within 120 days from the date of mailing of notice of the decision, provided that a Notice of Disagreement concerning an issue which was before the Board was filed with the agency of original jurisdiction on or after November 18, 1988. Veterans' Judicial Review Act, Pub. L. No. 100-687, § 402 (1988). The date which appears on the face of this decision constitutes the date of mailing and the copy of this decision which you have received is your notice of the action taken on your appeal by the Board of Veterans' Appeals.