Baseline characteristics in different groups
| Low myopia (n=309) | High myopia (n=134) | Total (n=443) | P value* | |
| Age, years | 11.27±3.32 | 13.92±2.74 | 12.07±3.38 | <0.001*** |
| Female | 158 (51.1%) | 72 (53.7%) | 230 (51.9%) | 0.690 |
| BMI, kg/m2† | 17.9±3.5 | 18.9±3.3 | 18.1±3.5 | 0.005 |
| Ophthalmological parameters | ||||
| SE, D | −2.59±1.43 | −8.59±2.31 | −4.42±3.25 | <0.001*** |
| AL, mm | 24.63±0.91 | 26.67±1.26 | 25.28±1.42 | <0.001*** |
| CR, mm | 7.87±0.25 | 7.77±0.26 | 7.84±0.25 | <0.001*** |
| SFCT, mm | 253.23±75.9 | 194.7±64.5 | 236.3±76.9 | <0.001*** |
| Inner RT, mm | 62.5±11.8 | 59.3±13.9 | 61.7±12.2 | 0.014* |
| Total RT, mm | 286.4±24.9 | 287.2±41.9 | 287.3±27.9 | 0.975 |
Inner RT is measured from the retinal nerve fibre layer to the inner plexiform layer.
Signficant values are: *p<0.05; ***p<0.001.
*T-test.
†BMI=weight/(height2).
AL, axial length; BMI, body mass index; CR, corneal radius of curvature; RT, retinal thickness; SE, spherical equivalent; SFCT, subfoveal choroidal thickness.