Cause | EMVI | SVI | Blind | All VI |
<6/12-6/60 n (%) | <6/60-3/60 n (%) | <3/60 n (%) | <6/12-NPL n (%) | |
Cataract | 447 (66.5) | 39 (76.5) | 100 (69.9) | 586 (67.7) |
Refractive error | 137 (20.4) | 0 (0) | 1 (0.7) | 138 (15.9) |
Glaucoma | 10 (1.5) | 4 (7.8) | 10 (7.0) | 24 (2.8) |
Non-trachoma CO | 14 (2.1) | 2 (3.9) | 5 (3.5) | 21 (2.4) |
Cataract surgical complications | 15 (2.2) | 0 (0) | 2 (1.4) | 17 (2.0) |
Trachoma CO | 2 (0.3) | 1 (2.0) | 5 (3.5) | 8 (0.9) |
Uncorrected aphakia | 1 (0.1) | 0 (0) | 1 (0.7) | 2 (0.2) |
Diabetic retinopathy | 1 (0.1) | 1 (2.0) | 0 (0) | 2 (0.2) |
AR macular degeneration | 2 (0.3) | 0 (0) | 0 (0.0) | 2 (0.2) |
All globe/CNS abnormalities | 1 (0.1) | 0 (0) | 1 (0.7) | 2 (0.2) |
Phthisis | 0 (0) | 0 (0) | 1 (0.7) | 1 (0.1) |
Other posterior segment | 42 (6.3) | 4 (7.8) | 17 (11.9) | 63 (7.3) |
Total | 672 (100) | 51 (100) | 143 (100) | 866 (100) |
AR, age related; CNS, central nervous system; CO, corneal opacity; EMVI, early to moderate visual impairment; NPL, no perception of light; SVI, severe visual impairment; VI, visual impairment.