Table 3 Anatomical causes of bilateral blindness, by sex
| Â | Boys | Â | Girls | Â | All | Total |
|---|---|---|---|---|---|---|
N | % | N | % | N | % | |
Cataract | 10 | 45.5 | 1 | 4.5 | 11 | 50.0 |
Corneal scarring | 2 | 9.1 | 1 | 4.5 | 3 | 13.6 |
Cortical blindness | 2 | 9.1 | 1 | 4.5 | 3 | 13.6 |
Glaucoma | 2 | 9.1 | 0 | 0.0 | 2 | 9.1 |
Optic atrophy | 1 | 4.6 | 1 | 4.6 | 2 | 9.1 |
Refractive error | 0 | 0.0 | 1 | 4.6 | 1 | 4.6 |
Total | 17 | 77.3 | 5 | 22.7 | 22 | 100.0 |