| Number of Students Who Repeat School Years | Visual Acuity ≤ 7/10th 8 - 10/10th |
Total | |
| n (%) | n (%) | ||
| 0 | 31 (19.9) | 142 (17.6) | 173 |
| 1 to 3 | 121 (77.6) | 655 (81.2) | 776 |
| >3 | 4 (2.6) | 10 (1.2) | 14 |
| Total | 156 (100) | 807 (100) | 963 |