| Refraction | D30 | ||||
| Emmetropia | Hypermetropia | Myopia | Total | ||
| n (%) | n (%) | n (%) | n (%) | ||
| D0 | Emmetropia | 0 (0.0) | 13 (2.9) | 13 (2.9) | 26 (5.9) |
| Hypermetropia | 48 (10.8) | 289 (65.1) | 18 (4.1) | 355 (80.0) | |
| Myopia | 18 (4.1) | 26 (5.9) | 19 (4.3) | 63 (14.2) | |
| Total | 66 (14.9) | 328 (73.9) | 50 (11.3) | 444 (100.0) | |