Table 1 Demographics and preoperative variables of the study groups (mean ± SD)
From: Comparison of clinical results between trans-PRK and femtosecond LASIK for correction of high myopia
Parameter | TPRK | FS-LASIK | P |
|---|---|---|---|
No. of eyes | 85 | 80 | |
No. of patients | 46 | 42 | |
Male (%) | 20(43.5%) | 17(40.5%) | 0.776 |
Age (years) | 25.6 ± 6.1 | 23.9 ± 5.5 | 0.161 |
UDVA (logMAR) | 1.22 ± 0.20 | 1.25 ± 0.21 | 0.406 |
CDVA (logMAR) | −0.02 ± 0.04 | − 0.01 ± 0.03 | 0.135 |
Sphere (D) | −7.04 ± 0.85 | −7.09 ± 1.23 | 0.791 |
Range (D) | −5.50 to −9.75 | − 5.00 to − 9.75 | |
Cylinder (D) | −1.11 ± 0.52 | − 1.03 ± 0.74 | 0.419 |
Range (D) | −0.50 to −3.00 | − 0.25 to − 3.00 | |
SER (D) | −7.59 ± 0.84 | − 7.60 ± 1.21 | 0.947 |
IOP (mmHg) | 15.1 ± 2.5 | 15.4 ± 2.5 | 0.448 |
CCT (μm) | 533.0 ± 23.0 | 540.0 ± 22.8 | 0.050 |
K1 | 42.6 ± 1.6 | 42.6 ± 1.2 | 0.710 |
K2 | 43.8 ± 1.7 | 44.1 ± 1.5 | 0.255 |
Ablation depth (μm) | 103.5 ± 7.0 | 106.4 ± 13.2 | 0.085 |
Optical zone (mm) | 6.2 ± 0.2 | 6.3 ± 0.2 | 0.085 |
Corneal total HOA (μm) | 0.40 ± 0.09 | 0.42 ± 0.09 | 0.276 |
Spherical aberration (μm) | 0.19 ± 0.08 | 0.20 ± 0.11 | 0.434 |
Vertical coma (μm) | −0.06 ± 0.17 | −0.04 ± 0.20 | 0.718 |
Horizontal coma (μm) | 0.01 ± 0.13 | 0.02 ± 0.12 | 0.499 |