Table 4. Prevalence of visual impairment according to ocular findings.
|
VA≤20/200
blindness |
20/200<VA<20/40
partial sight |
VA≥20/40 |
P | ||||
|---|---|---|---|---|---|---|---|
| N=366 | % | N=940 | % | N=3322 | % | ||
| Cataract | 259 | 70.8 | 538 | 57.2 | 797 | 24 | <0.001 |
| Diabetic retinopathy | 163 | 44.5 | 349 | 37.1 | 512 | 15.4 | <0.001 |
| Diabetic macular edema | 58 | 15.8 | 151 | 16.1 | 209 | 6.3 | <0.001 |
| Intravitreal hemorrhage | 33 | 9 | 18 | 1.9 | 51 | 1.5 | <0.001 |
| Tractional retinal detachment | 15 | 4.1 | 4 | 0.4 | 19 | 0.6 | <0.001 |
| Neovascular glaucoma | 12 | 3.3 | 1 | 0.1 | 13 | 0.4 | <0.001 |
| Open angle glaucoma | 13 | 3.6 | 45 | 4.8 | 58 | 1.7 | <0.001 |
| High myopia | 2 | 0.5 | 37 | 3.9 | 45 | 1.4 | <0.001 |
| Corneal opacity | 2 | 0.5 | 7 | 0.7 | 6 | 0.2 | <0.001 |
Abbreviation: VA, visual acuity.