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Distribution of corrected visual acuity with spectacles and rigid contact lenses
| Visual acuitylevel | With spectacle correction | With rigid contact lenses | ||
| No (eyes) | Cumulative | No (eyes) | Cumulative | |
| 6/4.5 | – | 0% | 7 | 5.3% |
| 6/5 | – | 0% | 6 | 9.85% |
| 6/6 | 36 | 33.3% | 110 | 93.18% |
| 6/7.5 | 8 | 40.7% | – | 0% |
| 6/9 | 22 | 61.1% | – | 0% |
| 6/12 | 42 | 100% | 5 | 96.97% |
| 6/15 | – | 0% | 3 | 99.24% |
| 6/18 | – | 0% | 1 | 100% |
| Total | 108 eyes | 100% | 132 | 100% |
