Preoperative versus postoperative slope comparison
| Parameters | Preoperative slope mean (SD) | Postoperative slope mean (SD) | P value |
| Kmax (D/year) | 3.27 (6.25) | −0.26 (2.02) | <0.0001 |
| AvgK (D/year) | 2.96 (4.77) | −0.10 (1.82) | <0.0001 |
| Ks (D/year) | 2.92 (5.73) | −0.15 (1.88) | <0.0001 |
| CCT (µm/year) | −8.76 (60.0) | −3.86 (10.9) | 0.0008 |
| TCT (µm/year) | −2.00 (62.7) | −5.48 (10.9) | 0.0076 |
AvgK, average corneal power; CCT, central corneal thickness; D, dioptres; Kmax, maximum corneal power; Ks, steepest corneal power; TCT, thinnest corneal thickness.