38 C.F.R. § 4.76a

Current through September 30, 2024

Section 4.76a - Computation of average concentric contraction of visual fields

Table III-Normal Visual Field Extent at 8 Principal Meridians

Meridian	Normal degrees
Temporally	85
Down temporally	85
Down	65
Down nasally	50
Nasally	60
Up nasally	55
Up	45
Up temporally	55
Total	500

View Image

Example of computation of concentric contraction under the schedule with abnormal findings taken from Figure 1.

Loss	Degrees
Temporally	55
Down temporally	55
Down	45
Down nasally	30
Nasally	40
Up nasally	35
Up	25
Up temporally	35
Total loss	320

Remaining field 500° minus 320° = 180°. 180°÷ 8 = 22¹/₂° average concentric contraction.

38 C.F.R. §4.76a

43 FR 45352, Oct. 2, 1978, as amended at 73 FR 66549, Nov. 10, 2008

Authority: 38 U.S.C. 1155