Table 3 Causes of visual impairment (best corrected, better eye)
Cause | Low vision | Unilateral blindness | Bilateral blindness |
|---|---|---|---|
Cataract | 96 (60.8%) | 53 (37.1%) | 16 (47.1%) |
Retinal disorder | 18 (11.4%) | 21 (14.7%) | 5 (14.7%) |
Corneal scar | 4 (2.5%) | 18 (12.6%) | 5 (14.7%) |
Refractive error | 19 (12.0%) | 10 (7.0%) | 3 (8.8%) |
Phthisis bulbi | 0 (0.0%) | 14 (9.8%) | 2 (5.9%) |
Trauma | 0 (0.0%) | 11 (7.7%) | 1 (2.9%) |
Glaucoma | 4 (2.5%) | 5 (3.5%) | 2 (5.9%) |
Surgical complication | 5 (3.1%) | 4 (2.8%) | 0 (0%) |
Amblyopia | 1 (0.6%) | 3 (2.1%) | 0 (0%) |
Optic atrophy | 1 (0.6%) | 3 (2.1%) | 0 (0%) |
Undetermined | 2 (1.3%) | 1 (0,7) | 0 (0%) |
PCO | 6 (3.8%) | 0 (0%) | 0 (0%) |
Aphakia | 2 (1.3%) | 0 (0%) | 0 (0%) |
Total | 158 (100%) | 143 (100%) | 34 (100%) |