Variables | N | Diopter mean ± SD |
Total student | 338 (100%) | −2.17 ± 1.86 |
Hyperopia | 8 (2%) | 1.33 ± 1.08 |
Emmetropia | 69 (20%) | −0.31 ± 0.32 |
Myopia | 261 (77%) | −2.77 ± 1.67 |
Without glasses | 107 (32%) | −1.58 ± 0.78 |
With glasses | 154 (46%) | −3.60 ± 1.62 |
Good fitting | 88 (26%) | −3.42 ± 1.39 |
Poor fitting | 66 (20%) | −3.95 ± 1.86 |