Type of previous LVC | PRK (n = 21) | LASIK (n = 9) | P |
---|---|---|---|
No. of eyes (right/left) | 11/10 | 4/5 | > 0.999 |
Age (years) | 33.38 ± 4.04 | 38.78 ± 3.00 | 0.001* |
Sex (M/F) | 6/15 | 2/7 | > 0.999 |
Time interval after previous surgery (months) | 71.29 ± 5.82 | 77.89 ± 6.59 | 0.022* |
Central corneal thickness (μm) | 452.95 ± 34.69 | 463.22 ± 39.12 | 0.455 |
Preoperative mean keratometry (D) | 38.97 ± 1.50 | 38.94 ± 1.18 | 0.700 |
LogMAR UDVA | |||
Preoperative | 0.70 ± 0.28 | 0.69 ± 0.43 | 0.982 |
3-month postoperative | −0.04 ± 0.07 | 0 ± 0.16 | 0.657 |
P (preop vs 3-month postop) | < 0.001 | 0.008 | |
LogMAR CDVA | |||
Preoperative | 0 | 0.03 ± 0.07 | 0.349 |
3-month postoperative | −0.05 ± 0.06 | 0 ± 0.14 | 0.563 |
P (preop vs 3-month postop) | 0.006 | 0.114 | |
Spherical error (D) | |||
Preoperative | −2.00 ± 0.48 | −3.08 ± 1.95 | 0.504 |
3-month postoperative | −0.02 ± 0.28 | 0.22 ± 0.32 | 0.051 |
P (preop vs 3-month postop) | < 0.001 | 0.008 | |
Cylindrical error (D) | |||
Preoperative | −0.37 ± 0.42 | − 0.36 ± 0.33 | 0.981 |
3-month postoperative | − 0.24 ± 0.39 | −0.19 ± 0.27 | 0.918 |
P (preop vs 3-month postop) | 0.146 | 0.301 | |
Spherical equivalent (D) | |||
Preoperative | −2.17 ± 0.42 | −3.26 ± 2.00 | 0.733 |
3-month postoperative | −0.14 ± 0.31 | 0.13 ± 0.30 | 0.050 |
P (preop vs 3-month postop) | < 0.001 | 0.008 | |
Endothelial cell count (/mm2) | |||
Preoperative | 2986 ± 314 | 3053 ± 233 | 0.556 |
3-month postoperative | 2966 ± 388 | 3076 ± 321 | 0.319 |
P (preop vs 3-month postop) | 0.476 | 0.859 |