Table 2. The mean values of keratometric measurements preoperatively and at 4 weeks postoperatively for different experimental groups.
| Preoperatively, diopters (Pre) | 4 weeks postoperatively, diopters (Post) | Post-Pre, diopters | |
|---|---|---|---|
| SMILE +2.00 D | 45.1 ± 1.8 | 47.2 ± 2.6 | 2.1 ± 0.9 |
| SMILE +4.00 D | 44.6 ± 1.3 | 48.3 ± 1.9 | 3.7 ± 1.1 |
| SMILE-W2D | 45.8 ± 0.6 | 46.1 ± 2.2 | 0.3 ± 0.2 |
| SMILE –W4D | 46.0 ± 1.2 | 46.3 ± 1.9 | 0.3 ± 0.3 |
| LASIK +2.00 D | 45.8 ± 0.9 | 48.2 ± 1.7 | 2.4 ± 1.1 |
| LASIK +4.00 D | 45.2 ± 1.1 | 49.8 ± 2.9 | 4.6 ± 2.4 |
| Control | 45.6 ± 1.4 | 44.0 ± 1.5 | −1.6 ± 0.8 |
| P value* | 0.266 |
*Comparison among different groups.