Systemic and ophthalmological parameters of children with low myopia
| Variables | Total (N=1127) | Boys (n=542) | Girls (n=585) | P value* |
| Systemic parameters | ||||
| Age, years | 10.29±0.60 | 10.30±0.60 | 10.27±0.60 | 0.514 |
| Height, cm | 143.23±7.42 | 142.79±6.96 | 143.64±7.80 | 0.053 |
| Weight, kg | 38.90±9.50 | 39.84±9.71 | 38.04±9.22 | 0.001 |
| Body mass index, kg/cm² | 18.77±3.40 | 19.36±3.60 | 18.24±3.12 | <0.001 |
| Ophthalmological parameters | ||||
| Spherical equivalent, dioptre | −1.44±0.69 | −1.44±0.69 | −1.44±0.69 | 0.997 |
| Axial length, mm | 24.17±0.74 | 24.45±0.72 | 23.91±0.65 | <0.001 |
| Corneal radius of curvature, mm | 7.82±0.25 | 7.88±0.25 | 7.76±0.23 | <0.001 |
| Axial length/corneal radius of curvature | 3.09±0.07 | 3.10±0.07 | 3.08±0.07 | <0.001 |
| Macular choroidal thickness, μm | 214.36±42.08 | 212.66±42.47 | 215.95±41.68 | 0.192 |
| Macular retinal thickness, μm | 276.24±11.40 | 277.10±11.31 | 275.45±11.44 | 0.016 |
| Subfoveal choroidal thickness, μm | 227.89±52.41 | 225.84±53.27 | 229.80±51.56 | <0.001 |
| Foveal retinal thickness, μm | 231.41±16.49 | 233.94±16.24 | 229.06±16.38 | 0.206 |
| Fundus tessellation, n (%) | ||||
| Grade 0 | 536 (47.6) | 245 (49.7) | 291 (45.2) | 0.48 |
| Grade 1 | 428 (38.0) | 213 (36.8) | 215 (39.3) | |
| Grade 2 | 128 (11.4) | 66 (10.6) | 62 (12.2) | |
| Grade 3 | 35 (3.1) | 18 (2.9) | 17 (3.3) |
P values < 0.05 were in bold.
*T-test or χ2 test to compare systemic or ophthalmological parameters between boys and girls.