be performed using a Goldmann Perimeter Chart as in Figure 2 below. The chart identifies four major quadrants, (upward, downward, and two lateral) plus a central field (20° or less). The examiner will chart the areas in which diplopia exists, and such plotted chart will be made a part of the examination report. Muscle function is considered normal (20/40) when diplopia does not exist within 40° in the lateral or downward quadrants, or within 30° in the upward quadrant. Impairment of muscle function is to be supported in each instance by record of actual appropriate pathology. Diplopia which is only occasional or correctable is not considered a disability.

4.78 Computing aggravation.

In determining the effect of aggravaon of visual disability, even though le visual impairment of only one eye service connected, evaluate the vion of both eyes, before and after sufring the aggravation, and subtract e former evaluation from the latter cept when

the bilateral vision nounts to total disability. In the ent of subsequent increase in the disility of either eye, due to intercurnt disease or injury not associated th the service, the condition of the es before suffering the subsequent inease will be taken as the basis of mpensation subject to the provisions §3.383(a) of this chapter.

FR 6718, May 22, 1964, as amended at 43 45354, Oct. 2, 1978]

179 Loss of use of one eye, having only light perception.

Loss of use or blindness of one eye, ving only light perception, will be ld to exist when there is inability to cognize test letters at 1 foot (.30m.) d when further examination of the -es reveals that perception of objects, and movements or counting fingers nnot be accomplished at 3 feet lm.), lesser extents of visions, parcularly perception of objects, hand ovements, or counting fingers at disnces less than 3 feet (.91 m.), being nsidered of negligible utility. With sual acuity 5/200 (1.5/60) or less or the sual field reduced to 5° concentric intraction, in either event in both jes, the question of entitlement on count of regular aid and attendance ill be determined on the facts in the dividual case.

3 FR 45354, Oct. 2, 1978]

4.80 Rating of one eye.

Combined ratings for disabilities of he same eye should not exceed the mount for total loss of vision of that ye unless there is an enucleation or a erious cosmetic defect added to the total loss of vision.

§§ 4.81-4.82 [Reserved]

$4.83 Ratings at scheduled steps and distances.

In applying the ratings for impairment of visual acuity, a person not having the ability to read at any one of the scheduled steps or distances, but reading at the next scheduled step or distance, is to be rated as reading at this latter step or distance. That is, a person who can read at 20/100 (6/30) but who cannot at 20/70 (6/21), should be rated as seeing at 20/100 (6/30).

[41 FR 34257, Aug. 13, 1976, as amended at 43 FR 45354, Oct. 2, 1978]

§4.83a Impairment of central visual acuity.

The percentage evaluation will be found from table V by intersecting the horizontal row appropriate for the Snellen index for one eye and the vertical column appropriate to the Snellen index of the other eye. For example, if one eye has a Snellen index of 5/200 (1.5/60) and the other eye has a Snellen index of 20/70 (6/21), the percentage evaluation is found in the third horizontal row from the bottom and the fourth vertical column from the left. The evaluation is 50 percent and the diagnostic code 6073.

[41 FR 11297, Mar. 18, 1976, as amended at 43 FR 45354, Oct. 2, 1978]

208-138 D-14

DISEASES OF THE EYE-Continued

DISEASES OF THE EYE-Continued

The above disabilities, in chronic form, are to be rated from 10 percent to 100 percent for impairment of visual acuity or field loss, pain, rest-requirements, or episodic incapacity, combining an additional rating of 10 percent during continuance of active pathology. Minimum rating during active pathology

6010 Eye, tuberculosis of, active or inactive: Active

6012 Glaucoma, congestive or inflammatory:

Frequent attacks of considerable duration; during continuance of actual total disability

Unilateral

6026 Neuritis, optic:

Rate underlying disease, and combine impair

ment of visual acuity or field loss.

6027 Cataract, traumatic:

Preoperative.

Rate on impairment of vision.

Postoperative.

Rate on impairment of vision and aphakia.

6028 Cataract, senile, and others:

Preoperative.

Rate on impairment of vision.

Postoperative.

Rate on impairment of vision and aphakia. 6029 Aphakia:

Bilateral or unilateral

NOTE: The 30 percent rating prescribed for aphakia is a minimum rating to be applied to the unilateral or bilateral condition and is not to be combined with any other rating for impaired vision. When only one eye is aphakic, the eye having poorer corrected visual acuity will be rated on the basis of its acuity without correction. When both eyes are aphakic, both will be rated on corrected vision. The corrected vision of one or both aphakic eyes will be taken one step worse than the ascertained value, however, not better than 20/70 (6/21). Combined ratings for disabilities of the same eye should not exceed the amount for total loss of vision of that eye unless there is an enucleation or a serious cosmetic defect added to the total loss of vision.

6030 Accommodation, paralysis of

6031 Dacryocystitis

Rate as epiphora.

6032 Eyelids, loss of portion of:

Rate as disfigurement. (See diseases of the skin.)

6033 Lens, crystalline, dislocation of:

Rate as aphakia.

6034 Pterygium:

Rate for loss of vision, if any.

6035 Keratoconus: To be evaluated on impairment of corrected visual acuity using contact lenses. NOTE: When contact lenses are medically required for keratoconus, either unilateral or bilateral, the minimum rating will be 30 percent.

TABLE IV-TABLE FOR RATING BILATERAL BLINDNESS OR BLINDNESS COMBINED WITH HEARING LOSS With Dictator'S CODE AND 38 CFR

CITATIONS

Add 1⁄2 step Code PB-2 38 CFR 3.350(f)(2)(v).

Add 1⁄2 step Code PB-2 38 CFR 3.350(f)(2)(v).

3.350(f)(2)(vi). Add a full step Code PB-3 38 CFR 3.350(f)(2)(iv). Add full step Code PB-3 38 CFR 3.350(f)(2)(vi).

3.350(f)(2)(vi).

O Code OB-2 38 CFR 3.350(e)(1)(iv).

O Code OB-2 38
CFR

3.350(e)(1)(iv).

NOTE. (1) Any of the additional SMC payable under Dictator's Codes PB-1, PB-2, or PB-3 is not to exceed the rate payable under Subpar. O. (2) If in addition to any of the above the veteran has the service-connected loss or loss of use of an extremity, additional SMC is payable, not to exceed the rate payable under Subpar. O. See Dictator's Codes PB-4, PB-5, PB-6, and 38 CFR 3.350(f)(2)(vii) (A), (B), (C).

Vision in 1 eye 20/200 (6/60): 6075 In the other eye 20/200 (6/60) 6076 In the other eye 20/100 (6/30) 6076 In the other eye 20/70 (6/21) 6076 In the other eye 20/50 (6/15) 6077 In the other eye 20/40 (6/12)

Vision in 1 eye 20/100 (6/30): 6078 In the other eye 20/100 (6/30) 6078 In the other eye 20/70 (6/21) 6078 In the other eye 20/50 (6/15)

6068 In the other eye 15/200 (4.5/60) 6068 In the other eye 20/200 (6/60) 6069 In the other eye 20/100 (6/30) 6069 In the other eye 20/70 (6/21) 6069 In the other eye 20/50 (6/15) 6070 In the other eye 20/40 (6/12)

Vision in 1 eye 5/200 (1.5/60): 6071 In the other eye 5/200 (1.5/60) 6072 In the other eye 10/200 (3/60) 6072 In the other eye 15/200 (4.5/60)

6072 In the other eye 20/200 (6/60) 6073 In the other eye 20/100 (6/30) 6073 In the other eye 20/70 (6/21) 6073 In the other eye 20/50 (6/15) 6074 In the other eye 20/40 (6/12)

Vision in 1 eye 10/200 (3/60): 6075 In the other eye 10/200 (3/60) 6075 In the other eye 15/200 (4.5/60) 6075 In the other eye 20/200 (6/60)

6079 In the other eye 20/40 (6/12)

Vision in 1 eye 20/70 (6/21): 6078 In the other eye 20/70 (6/21) 6078 In the other eye 20/50 (6/15)

Vision in 1 eye 20/50 (6/15):

Vision in 1 eye 20/40 (6/12):

In the other eye 20/40 (6/12)

5 Also entitled to special monthly compensation. Add 10% if artificial eye cannot be worn; also entitle

special monthly compensation.