| WHO/IAPB region | Population (millions) | Number of cataract operations | CSR (ops/mill/year) |
| Africa | 650 | 0.20 | 300 |
| Americas | 800 | 2.15 | 2700 |
| North | 300 | 1.65 | 5500 |
| Central and South | 500 | 0.5 | 1000 |
| Eastern Mediterranean | 500 | 0.5 | 1000 |
| Europe | 900 | 2.1 | 2300 |
| Western | 400 | 1.6 | 4000 |
| East and central | 500 | 0.5 | 1000 |
| South East Asia | 1500 | 3.6 | 2400 |
| India | 1000 | 3.1 | 3100 |
| Rest | 500 | 0.5 | 1000 |
| Western Pacific | 1650 | 1.65 | 1000 |
| Australia and Japan | 150 | 0.8 | 5300 |
| China | 1250 | 0.6 | 500 |
| Rest | 250 | 0.25 | 1000 |
| Total | 6000 | 10.2 | 1700 |
↵Author's estimates.