Table 1.
Descriptive statistics of variables in the evaluations before and 3 and 12 months after surgery
| PRE-SURGERY MD ± SD |
POST 3 M MD ± SD |
POST 12 M MD ± SD |
|
|---|---|---|---|
| GAT (mmHg)a | |||
| • ALL | 15.80 ± 2.72 | 12.00 ± 2.32 | 13.04 ± 2.55 |
| • LASIK | 15.60 ± 3.27 | 11.01 ± 2.31 | 12.90 ± 2.64 |
| • PRK | 16.01 ± 1.45 | 13.05 ± 1.13 | 14.20 ± 2.27 |
| CT (mmHg)a | |||
| • ALL | 21.07 ± 4.35 | 15.80 ± 3.07 | 16.30 ± 3.34 |
| • LASIK | 21.05 ± 4.59 | 14.05 ± 2.67 | 15.80 ± 3.22 |
| • PRK | 22.00 ± 4.01 | 17.09 ± 2.55 | 17.30 ± 3.47 |
| IOPcc (mmHg)a | |||
| • ALL | 15.89 ± 3.07 | 13.07 ± 2.52 | 13.06 ± 2.40 |
| • LASIK | 16.40 ± 2.93 | 12.48 ± 2.20 | 12.87 ± 2.77 |
| • PRK | 15.02 ± 3.26 | 14.08 ± 2.83 | 13.38 ± 1.65 |
| IOPg (mmHg)a | |||
| • ALL | 15.49 ± 2.98 | 8.95 ± 2.79 | 9.62 ± 2.73 |
| • LASIK | 15.81 ± 2.77 | 8.24 ± 2.57 | 9.62 ± 3.00 |
| • PRK | 14.93 ± 3.37 | 10.17 ± 2.87 | 9.61 ± 2.32 |
| SER (dpts) | |||
| • ALL | − 4.98 ± 2.28 | 0.00 ± 0.30 | 0.02 ± 0.22 |
| • LASIK | −5.83 ± 2.21 | 0.05 ± 0.33 | 0.03 ± 0.25 |
| • PRK | −3.52 ± 1.33 | 0.05 ± 0.23 | 0.03 ± 0.15 |
| simK | |||
| • ALL | 43.70 ± 1.13 | 39.80 ± 1.96 | 39.90 ± 2.00 |
| • LASIK | 43.70 ± 1.16 | 39.30 ± 2.06 | 39.40 ± 2.04 |
| • PRK | 43.60 ± 1.11 | 40.60 ± 1.53 | 40.08 ± 1.62 |
| CCT (μ) | |||
| • ALL | 543 ± 27.08 | 457 ± 35.90 | 469 ± 41.30 |
| • LASIK | 554 ± 22.30 | 460 ± 40.70 | 466 ± 42.40 |
| • PRK | 524 ± 26.40 | 452 ± 26.60 | 473 ± 41.10 |
| CH | |||
| • ALL | 10.53 ± 1.28 | 7.88 ± 1.16 | 8.07 ± 1.03 |
| • LASIK | 10.44 ± 1.12 | 7.85 ± 1.10 | 8.04 ± 1.05 |
| • PRK | 10.67 ± 1.56 | 7.92 ± 1.32 | 8.11 ± 1.05 |
| CRF | |||
| • ALL | 9.88 ± 1.12 | 6.29 ± 1.40 | 6.59 ± 1.25 |
| • LASIK | 9.97 ± 1.09 | 6.05 ± 1.37 | 6.54 ± 1.20 |
| • PRK | 9.72 ± 1.21 | 6.70 ± 1.43 | 6.68 ± 1.39 |
| PTA | |||
| • ALL | 12.90 ± 4.73 | ||
| • LASIK | 14.40 ± 4.94 | ||
| • PRK | 10.30 ± 2.99 | ||
| Max.Abl | |||
| • ALL | 70.50 ± 26.80 | ||
| • LASIK | 79.90 ± 27.50 | ||
| • PRK | 54.10 ± 16.40 | ||
Significant differences between LASIK and PRK IOPm are marked in bold
Comparisons between pre- and post-surgery: a, Wilcoxon test, p < 0.001. All values are in mean ± standard deviation (MD ± SD). GAT Goldmann applanation tonometer, CT Convex tonometer, IOPcc Corneal-compensated IOP, IOPg Goldmann-correlated IOP, SER Spherical equivalent refraction, simK simulated keratometry, CCT Central corneal thickness, PTA Percent tissue altered, Max.Abl Maximum corneal ablation, CH Corneal hysteresis, CRF Corneal resistance factor, M Months