Table 4.
Refractive error at subject-level classified by the multicomponent definitions [10]
| Classification | n children (%) | 7 to 9 years (%) | 10 to 12 years (%) | 13 to 15 years (%) | 16 to 17 years (%) |
|---|---|---|---|---|---|
| Hyperopia | 28 (41.8) | 2 (28.5) | 15 (46.9) | 8 (40) | 3 (37.5) |
| Myopia | 20 (29.9) | 3 (42.8) | 8 (25) | 6 (30) | 2 (25) |
| Anisometropia | 10 (14.9) | 1 (14.2) | 5 (15.6) | 3 (15) | 1 (12.5) |
| Mixed astigmatisma | 8 (11.9) | 1 (14.2) | 3 (9.3) | 2 (10) | 2 (25) |
| Emmetropia | 1 (1.5) | 0 (0) | 1 (3.1) | 1 (5) | 0 (0) |
| Totalb | 67 (100) | 7 (10.4) | 32 (47.7) | 20 (29.8) | 8 (11.9) |
a 65 (97%) children had astigmatism < -0.75cyl in at least one eye
b To calculate the percentages in the total raw the denominator was 67 children. In the columns, the denominators were their respective totals