Cause | Blindness (VA<3/60) | Severe visual impairment (VA<6/60–⩾3/60) | Visual impairment (VA<6/18–⩾6/60) |
---|---|---|---|
(n = 29) | (n = 40) | (n = 115) | |
*Cataract (corrected and uncorrected), refractive error, onchocerciasis, corneal scar. | |||
Cataract | 18 (62.1%) | 26 (65.0%) | 46 (40.0%) |
Onchocerciasis | 4 (13.8%) | 5 (12.5%) | 4 (3.5%) |
Posterior segment diseases | 4 (13.8%) | 1 (2.5%) | 32 (27.8%) |
Refractive error | 0 | 6 (15.0%) | 30 (26.1%) |
Surgery related | 0 | 1 (2.5%) | 0 |
Phthisis/no globe | 2 (6.9%) | 0 | 0 |
Others | 1 (3.5%) | 1 (2.5%) | 3 (2.6%) |
Avoidable* | 24 (82.8%) | 38 (95.0%) | 80 (69.6%) |