Table 4.
Aberration Outcomes Six Months Postoperatively
| Parameter | Femto-LASIK | PRK | ||||
|---|---|---|---|---|---|---|
| Before | After | P value | Before | After | P value | |
| Mean HOA 5 mm (µm) ± SD | 0.27±0.1 | 0.26±0.1 | 0.52 | 0.25±0.11 | 0.29±0.11 | 0.03 |
| Mean HOA 6 mm (µm) ± SD | 0.42±0.16 | 0.51±0.19 | 0.01 | 0.42±0.18 | 0.57±0.23 | 0.00 |
| Mean Sph A. 5 mm (µm) ± SD | 0.01±0.01 | 0.01±0.02 | 0.58 | 0.02±0.04 | 0.03±0.07 | 0.38 |
| Mean Sph A. 6 mm (µm) ± SD | 0.03±0.06 | 0.06±0.06 | 0.00 | 0.04±0.06 | 0.10±0.14 | 0.00 |
| Mean total A. 5 mm (µm) ± SD | 4.93±0.98 | 0.61±0.25 | 0.00 | 4.57±0.91 | 0.57±0.23 | 0.00 |
| Mean total A. 6mm (µm) ± SD | 7.08±1.42 | 1.02±0.36 | 0.00 | 6.67±1.35 | 1.04±0.45 | 0.00 |
HOA = Higher order aberration; Sph A.= spherical aberration; A= aberration