Table 1.

Categories of visual disability

Best corrected visual acuity in the better eye	Best corrected visual acuity in the worse eye	Percentage of impairment
6/18–6/36	6/60 to nil	40
6/60–4/60 or field of vision 10°-20°	3/60 to nil	75
3/60 to 1 /60 or field of vision 10°	Finger count at 1 ft. to nil	100
F.C. at 1 ft. to nil or field of vision 10°	Finger count at 1 ft. to nil or field of vision 10°	100