Ocular pathology incidence in 11 year period (n=270)
| Prevalence 1988–99 % (95% CI) | Cumulative incidence % (95% CI) | |
| Lid changes | ||
| Abnormal blink pattern | 24.8 (±5.2) | 11.8 (±4.4) |
| Inability to close (gentle) | 28.5 (±5.4) | 3.6 (±2.6) |
| Inability to close (forced) | 21.5 (±4.9) | 2.4 (±2.1) |
| Trichiasis | 7.8 (±3.2) | 9.6 (±3.7) |
| Corneal changes | ||
| Exposure keratitis | 6.7 (±3.0) | 17.5 (±4.7) |
| Corneal opacity (visually disabling only) | 3.3 (±2.1) | 2.4 (±1.9) |
| Reduced corneal sensation | 13.3 (±4.1) | 20.1 (±5.1) |
| Uveal changes | ||
| Miotic pupil (<2 mm) | 20.1 (±4.8) | 4.3 (±2.7) |
| Abnormal pupil reaction | 24.2 (±5.2) | 5.5 (±3.2) |
| Posterior synechia | 18.1 (±4.6) | 7.0 (±3.4) |
| Lens changes | ||
| Cataract (vision reducing) | 10.4 (±3.7) | 26.4 (±5.7) |