Table 1.
Mean and range of the variables at enrolment.
| Variables | Minimum | Maximum | Mean ± SD |
|---|---|---|---|
| Age (years) | 7.82 | 15.3 | 12.27 ± 1.61 |
| Sphere (D) | − 6 | − 0.75 | − 2.99 ± 1.08 |
| Cylinder (D) | − 1.5 | 0 | − 0.34 ± 0.4 |
| SER (D) | − 6.75 | − 0.75 | − 3.16 ± 1.13 |
| Myopia progression (D/y) | − 1.42 | 0 | − 0.61 ± 0.31 |
| DAF (cpm) | 2 | 45.5 | 18.29 ± 7.42 |
| Slope of ASRC | 0.81 | 1.2 | 1.02 ± 0.08 |
| ALA 0–6 (D2) | 3.25 | 11.85 | 6.84 ± 1.65 |
| Accommodative lag at 0 D (D) | − 0.97 | 0.49 | − 0.27 ± 0.3 |
| Accommodative lag at 1 D (D) | − 0.13 | 1.35 | 0.51 ± 0.27 |
| Accommodative lag at 2 D (D) | 0.42 | 1.9 | 1.02 ± 0.28 |
| Accommodative lag at 3 D (D) | 0.64 | 2.21 | 1.33 ± 0.3 |
| Accommodative lag at 4 D (D) | 0.75 | 2.37 | 1.51 ± 0.33 |
| Accommodative lag at 5 D (D) | 0.75 | 2.52 | 1.61 ± 0.36 |
| Accommodative lag at 6 D (D) | 0.68 | 2.91 | 1.70 ± 0.4 |
SER spherical equivalent refraction, DAF distance accommodative facility, slope of ASRC the steepest slope of the accommodative stimulus–response curve, ALA 0–6 the accommodative lag area between 0 and 6 D.