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Causes of visual impairment
| Cause | Moderate visual impairment n (%) | Severe visual impairment n (%) | Blindness n (%) | Total n (%) |
| Uncorrected refractive errors | 182 (65.7) | 03 (10.0) | 07 (8.9) | 192 (49.7) |
| Cataract | 77 (27.8) | 21 (70.0) | 45 (56.9) | 143 (37.0) |
| Central corneal opacity | 11 (4.0) | 03 (10.0) | 12 (15.2) | 26 (6.7) |
| Others | 07 (2.5) | 03 (10.0) | 15 (18.9) | 25 (6.5) |
| Total | 277 | 30 | 79 | 386 |
