Pre- and 18-month postoperative results in untreated eyes (n=22)
| Parameter | Preoperative | 18 months | Difference | p Value |
| Spherical equivalent refractive error (D) | −2.66 | −2.55 | +0.11 | 0.7 |
| Refractive astigmatism (DC) | −3.92 | −4.56 | −0.64 | 0.002 |
| Uncorrected visual acuity (Snellen decimal equivalent) | 0.22 | 0.21 | −0.01 | 0.5 |
| Best spectacle-corrected visual acuity (Snellen decimal equivalent) | 0.78 | 0.91 | +0.13 | 0.02 |
| Pachymetry (μm) | 482 | 488 | +6 | 0.1 |
| Orbscan-simulated keratometry (D) | 47.08 | 47.22 | +0.14 | 0.3 |
| Orbscan-simulated astigmatism (D) | 3.71 | 3.75 | +0.04 | <0.8 |
| Orbscan 3 mm keratometry (D) | 46.42 | 46.58 | +0.16 | 0.3 |
| Orbscan 5 mm keratometry (D) | 44.75 | 44.88 | +0.13 | 0.2 |
| Keraton-simulated keratometry (D) | 47.14 | 47.26 | +0.12 | 0.6 |
| Keraton-simulated astigmatism (D) | 3.36 | 3.56 | +0.2 | 0.1 |
| 2.00 mm cone apex power (D) | 52.8 | 52.7 | −0.1 | 0.6 |
D, dioptres; DC, diopters of cylinder.