Table 1 Characteristics at enrollment of subjects in the two groups followed for 1 year, mean ± SD or n (%)

Age (year)

All

10.07 ± 1.44

9.80 ± 1.64

Age (8.0 to10.0 years)

9.77 ± 1.26 (n = 13)

9.65 ± 1.45 (n = 12)

Age (10.1 to 12.0 years)

10.34 ± 1.58 (n = 14)

9.98 ± 1.89 (n = 14)

Spherical equivalent refraction (SER, D)

All

-2.81 ± 0.92

-2.81 ± 0.97

SER (-1.00 to -2.50D)

-2.61 ± 1.04 (n = 14)

-2.76 ± 1.24 (n = 13)

SER (-2.51 to -4.00 D)

-3.10 ± 0.68 (n = 13)

-2.84 ± 0.71 (n = 13)

Body mass index (kg/m2)

18.94 ± 4.12

17.48 ± 3.40

Age at myopia diagnosis (year)

8.80 ± 1.50

8.84 ± 1.66

Age at first wearing of glasses (year)

9.06 ± 1.62

8.83 ± 1.59

SER progression 1 year before

study enrollment (D)

-0.72 ± 0.48

-0.77 ± 0.38

Corneal curvature (D)

42.84 ± 1.38

42.88 ± 1.25

Corneal astigmatism (D)

1.07 ± 0.48

1.23 ± 0.44

Anterior chamber depth (mm)

3.59 ± 0.42

3.70 ± 0.25

Intraocular pressure (mmHg)

16.96 ± 3.13

16.47 ± 2.43

Pupil diameter (mm)

5.58 ± 1.48

5.72 ± 1.19

Accommodative amplitude (D)

16.11 ± 3.67

15.99 ± 4.03

Axial length (mm)

24.79 ± 0.72

24.64 ± 0.79

Male, n (%)

10 (37.04%)

15 (57.69%)

Heredity

- - (neither parent myopic)

2 (7.41%)

5 (20.00%)

+ - (one parent myopic)

11 (40.74%)

9 (36.00%)

+ + (both parents myopic)

14 (51.85%)

11 (44.00%)