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First age at which the definition of myopia was observed
| Age (Years) |
Myopia Definition Spherical Equivalent −0.50 D or more myopia N= 1006 |
Myopia Definition Both Principal Meridians −0.75 D or more myopia N = 749 |
|---|---|---|
| 7 | 25 (2.5%) | 11 (1.5%) |
| 8 | 80 (8.0%) | 59 (7.9%) |
| 9 | 150(14.9%) | 100(13.4%) |
| 10 | 175(17.4%) | 122(16.3%) |
| 11 | 161(16.0%) | 136(18.2%) |
| 12 | 157(15.6%) | 112(15.0%) |
| 13 | 142(14.1%) | 111(14.8%) |
| 14 | 91 (9.0%) | 80 (10.7%) |
| 15 | 23 (2.3%) | 12 (1.6%) |
| 16 | 2 (0.2%) | 6 (0.8%) |
