Table 2
Causes of bilateral and unilateral low vision and blindness
| Total (% contributing to low vision) | ||||
|---|---|---|---|---|
| Bilateral low vision | Bilateral blindness | Unilateral low vision | Unilateral blindness | |
| *Specified cause was present in one or both eyes in patients who met the criteria for visual impairment in the worse eye. | ||||
| 27 participants were not examined as 14 were not contactable, 8 moved to another area, 1 refused, and 4 died. | ||||
| Primary cause of vision loss | ||||
| Uncorrected refractive error | 4 (12.9) | 0 (0.0) | 3 (12.0) | 0 (0.0) |
| Cataract | 19 (61.3) | 5 (62.5) | 12 (48.0) | 0 (0.0) |
| Amblyopia | 4 (12.9) | 0 (0.0) | 1 (4.0) | 1 (50.0) |
| Age related macular degeneration | 0 (0.0) | 1 (12.5) | 2 (8.0) | 0 (0.0) |
| Macular hole | 0 (0.0) | 0 (0.0) | 1 (4.0) | 0 (0.0) |
| Optic atrophy | 0 (0.0) | 0 (0.0) | 1 (4.0) | 0 (0.0) |
| Trauma | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (50.0) |
| No obvious ocular disease | 4 (12.9) | 2 (25.0) | 5 (20.0) | 0 (0.0) |
| Total | 31 (100) | 8 (100) | 25 (100) | 2 (100) |
