Table 3 Principal cause of blindness, Severe Visual Impairment (VI), Moderate (MVI) and Early Visual Impairment (EVI) in persons
Blindness | Severe VI | Moderate VI | Early VI | |
|---|---|---|---|---|
% | % | % | % | |
1. Uncorrected Refractive Error | 1.4% | 16.3% | 23.8% | 49.1% |
3. Cataract untreated | 65.2% | 34.7% | 34.3% | 23.0% |
4. Cataract surgical complications | 2.9% | 0.0% | 0.7% | 0.4% |
6. Non Trachomatous corneal opacity | 1.4% | 4.1% | 7.0% | 3.5% |
8. Myopic retinopathy | 8.7% | 12.2% | 4.9% | 2.7% |
9. Glaucoma | 4.3% | 0.0% | 2.1% | 1.3% |
10. Diabetic retinopathy | 2.9% | 4.1% | 2.1% | 0.9% |
11. ARMD | 4.3% | 18.4% | 17.5% | 13.3% |
12. Other posterior segment disease | 5.8% | 10.2% | 5.6% | 4.9% |
13. All other globe/CNS abnormalitiesa | 2.9% | 0.0% | 2.1% | 0.9% |
Total | 100.0% | 100.0% | 100.0% | 100.00% |
A. Treatable (1,2,3) | 66.7% | 51.0% | 58.0% | 72.1% |
B. Preventable (PHC/PEC services) (5,6,7,8) | 10.1% | 16.3% | 11.9% | 6.2% |
C. Preventable (Ophthalmic services) (4,9,10) | 10.1% | 4.1% | 4.9% | 2.7% |
D. Avoidable (A + B + C) | 87.0% | 71.4% | 74.8% | 81.0% |
E. Posterior segment causes (8,9,10,11,12) | 26.1% | 44.9% | 32.2% | 23.0% |