Disability ceificate for poor vision if 4/60, is impairment percentage of: 75% All with correction Category Better Eye Worse Eye % Age Impairment Category 0 6/9-6/18 6/24 to 6/36 20% Category I 6/18-6/36 6/60 to Nil 40% Category II 6/40-4/60 or field of vision 10-20 3/60 to Nil 75% Category III 3/60 to 1/60 or field of vision 10 F.C. at 1 ft. to Nil 100% Category IV F.C. at 1 ft. to Nil or field of viosion 10 F.C. at 1 ft. to Nil 100% One eyed persons 6/6 F.C. at 1 ft. to Nil or field of vision 10 30% Note: F.C. means finger count Ref: OFFICE OF THE CHIEF COMMISSIONER FOR PERSONS WITH DISABILITIES DISABILITY GUIDELINES : Categories of visual Disability: