The baseline characteristics of the patients
| Mean±SD | Range | |
| Age (years) | 14.81±1.96 | 10 to 17 |
| Sphere (D) | −5.35±4.30 | −18.50 to 0.50 |
| Cylinder (D) | −4.24±2.41 | −0.50 to –8.75 |
| Spherical equivalent (D) | −7.51±4.39 | 0 to 20.88 |
| CDVA (logMAR) | 0.32±0.28 | 0 to 1.30 |
| K1 (D) | 47.13±5.27 | 41.3 to 64.4 |
| K2 (D) | 51.28±6.16 | 42.6 to 68.0 |
| Kmax (D) | 58.73±9.70 | 43.9 to 82.1 |
| CCT (μm) | 492.42±33.83 | 427 to 578 |
| AT (μm) | 483.89±37.76 | 409 to 576 |
| TCT (μm) | 474.91±36.45 | 400 to 563 |
AT, apex thickness; CCT, central corneal thickness; CDVA, corrected distance visual acuity; D, diopters; K1, steepest meridian keratometry; K1, flattest meridian keratometry; Kmax, maximum keratometry; logMAR, logarithm of the minimal angle of resolution; TCT, thinnest corneal thickness.