Significant multivariate risk factors for pterygium
| Risk factor | Odds ratio | 95% CL |
| Age group (10 year) | 1.23 | 1.06, 1.44 |
| Male sex | 2.02 | 1.35, 3.03 |
| Rural residence | 5.28 | 3.56, 7.84 |
| Lifetime ocular sun exposure (0.01 log MSY) |
1.63 | 1.18, 2.25 |









