Table 1.
Demographics and preoperative data of the study population
| Mean ± SD (range) | WFG FS-LASIK | SMILE | P value a |
|---|---|---|---|
| Number of eyes | 26 | 39 | - |
| Age (years) | 24 ± 5 | 22 ± 4 | 0.186b |
| Gender (% female) | 40% | 33% | 0.542 |
| UDVA (logMAR) | 0.99 ± 0.37 (0.30,1.70) | 0.96 ± 0.28 (0.52,1.40) | 0.737 |
| CDVA (logMAR) | 0.03 ± 0.06 (0.00,0.22) | 0.01 ± 0.03 (0.00,0.10) | 0.076 |
| Sphere (D) | −4.20 ± 2.65 (−10.00,0.00) | −4.41 ± 1.23 (−6.50,-2.00) | 0.710b |
| Cylinder (D) | −2.66 ± 1.12 (−5.50,-1.00) | −2.26 ± 0.73 (−4.00,-1.00) | 0.102b |
| SE (D) | -5.54 ± 2.40 (−10.50,-2.00) | −5.53 ± 1.24 (−8.00,-2.88) | 0.998b |
| Ocular aberration (μm) | |||
| Z3 −3 | 0.062 ± 0.063 (0.001,0.211) | 0.067 ± 0.047 (0.006,0.206) | 0.249 |
| Z3 −1 | 0.074 ± 0.045 (0.000,0.203) | 0.088 ± 0.068 (0.001,0.277) | 0.738 |
| Z3 1 | 0.049 ± 0.043 (0.001,0.168) | 0.034 ± 0.029 (0.001,0.126) | 0.194 |
| Z3 3 | 0.040 ± 0.037 (0.000,0.163) | 0.043 ± 0.035 (0.000,0.147) | 0.698 |
| Z4 0 | 0.047 ± 0.027 (0.005,0.108) | 0.056 ± 0.034 (0.001,0.116) | 0.280b |
| Total HOA | 0.158 ± 0.055 (0.078,0.281) | 0.166 ± 0.063 (0.057,0.370) | 0.659 |
CDVA = corrected distance visual acuity (with spectacles); UDVA = uncorrected distance visual acuity; SE = spherical equivalent; a P values were based on Mann-Whitney test for non-normally distributed data unless otherwise specified; b P values were based on Student t-test for normally distributed data