Causes | Blindness VA <3/60 | Severe VI VA <6/60–3/60 | Moderate VI VA <6/18–6/60 | Mild VI VA <6/12–6/18 | ||||
N | % | N | % | N | % | N | % | |
Cataract untreated | 32 | 36.8 | 43 | 54.4 | 117 | 46.1 | 65 | 20.3 |
ARMD | 20 | 23.0 | 9 | 11.4 | 33 | 13.0 | 13 | 4.1 |
All other globe/CNS abnormalities | 13 | 14.9 | 5 | 6.3 | 11 | 4.3 | 12 | 3.8 |
Cataract surgical complications | 7 | 8.0 | 1 | 1.3 | 12 | 4.7 | 4 | 1.3 |
Other posterior segment disease | 6 | 6.9 | 3 | 3.8 | 4 | 1.6 | 3 | 0.9 |
Myopic degeneration | 3 | 3.4 | 2 | 2.5 | 3 | 1.2 | 1 | 0.3 |
Non-trachomatous corneal opacity | 2 | 2.3 | 7 | 8.9 | 7 | 2.8 | 3 | 0.9 |
URE | 1 | 1.1 | 5 | 6.3 | 55 | 21.7 | 213 | 66.6 |
Phthisis | 1 | 1.1 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 |
Glaucoma | 1 | 1.1 | 2 | 2.5 | 5 | 2.0 | 3 | 0.9 |
Diabetic retinopathy | 1 | 1.1 | 2 | 2.5 | 6 | 2.4 | 3 | 0.9 |
Aphakia uncorrected | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 |
Trachomatous corneal opacity | 0 | 0.0 | 0 | 0.0 | 1 | 0.4 | 0 | 0.0 |
ARMD, age-related macular degeneration; CNS, central nervous system; URE, uncorrected refractive erro; VI, vision impairment.