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| National Eye Survey | Year | Blindness Prevalence | % Cataract | Surgical Backlog |
| 1st | 1983 | 1.14% | 47.3% | 270,000 |
| 2nd | 1987 | 0.58% | 71.3% | 220,000 |
| 3rd | 1994 | 0.31% | 74.7% | 134,000 |
| 4th | 2006 | 0.59% | 51.6% | 98,336 |
| 5th | 2013 | 0.60% | 69.7% | 70,071 |
