Table 2. Comparison of corneal aberrations between the HOAs ≤ 0.3 group and the HOAs > 0.3 group.
| HOA ≤ 0.3 group | HOA > 0.3 group | P value | |
|---|---|---|---|
| Number of eyes | 57 | 55 | – |
| SR | |||
| Preoperative | 0.12 ± 0.07 | 0.12 ± 0.05 | 0.653 |
| Postoperative month 1 | 0.16 ± 0.04* | 0.15 ± 0.05* | 0.169 |
| Postoperative month 3 | 0.16 ± 0.04* | 0.15 ± 0.04* | 0.377 |
| Postoperative month 6 | 0.17 ± 0.05* | 0.16 ± 0.04* | 0.303 |
| Postoperative month 12 | 0.16 ± 0.04* | 0.15 ± 0.04* | 0.285 |
| ΔSR (1 mo–Preop) | 0.04 ± 0.07 | 0.03 ± 0.07 | 0.634 |
| Total corneal aberrations (μm) | |||
| Preoperative | 1.23 ± 0.61 | 1.29 ± 0.75 | 0.636 |
| Postoperative month 1 | 1.13 ± 0.38 | 1.12 ± 0.28 | 0.802 |
| Postoperative month 3 | 1.12 ± 0.34 | 1.10 ± 0.29 | 0.732 |
| Postoperative month 6 | 1.13 ± 0.36 | 1.11 ± 0.27 | 0.813 |
| Postoperative month 12 | 1.10 ± 0.34 | 1.08 ± 0.24 | 0.715 |
| ΔTCAs (1 mo–Preop) | −0.10 ± 0.54 | −0.18 ± 0.75 | 0.534 |
| Astigmatism (μm) | |||
| Preoperative | 1.14 ± 0.66 | 1.18 ± 0.79 | 0.761 |
| Postoperative month 1 | 0.63 ± 0.32* | 0.61 ± 0.35* | 0.788 |
| Postoperative month 3 | 0.60 ± 0.28* | 0.62 ± 0.34* | 0.788 |
| Postoperative month 6 | 0.57 ± 0.28* | 0.62 ± 0.29* | 0.426 |
| Postoperative month 12 | 0.57 ± 0.24* | 0.56 ± 0.31* | 0.868 |
| ΔAstigmatism (1 mo–Preop) | −0.51 ± 0.58 | −0.57 ± 0.73 | 0.637 |
| HOAs (μm) | |||
| Preoperative | 0.38 ± 0.09 | 0.44 ± 0.12 | 0.005** |
| Postoperative month 1 | 0.91 ± 0.32* | 0.86 ± 0.26* | 0.414 |
| Postoperative month 3 | 0.90 ± 0.32* | 0.86 ± 0.26* | 0.415 |
| Postoperative month 6 | 0.94 ± 0.33* | 0.88 ± 0.26* | 0.303 |
| Postoperative month 12 | 0.91 ± 0.32* | 0.87 ± 0.24* | 0.393 |
| ΔHOAs (1 mo–Preop) | 0.53 ± 0.33 | 0.42 ± 0.30 | 0.090 |
| Coma (μm) | |||
| Preoperative | 0.22 ± 0.21 | 0.24 ± 0.14 | 0.579 |
| Postoperative month 1 | 0.41 ± 0.22* | 0.43 ± 0.25* | 0.673 |
| Postoperative month 3 | 0.43 ± 0.23* | 0.42 ± 0.24* | 0.815 |
| Postoperative month 6 | 0.46 ± 0.25* | 0.46 ± 0.23* | 0.943 |
| Postoperative month 12 | 0.44 ± 0.26* | 0.43 ± 0.20* | 0.782 |
| ΔComa (1 mo–Preop) | 0.19 ± 0.31 | 0.19 ± 0.28 | 0.991 |
| Trefoil (μm) | |||
| Preoperative | 0.15 ± 0.07 | 0.18 ± 0.10 | 0.029** |
| Postoperative month 1 | 0.22 ± 0.14* | 0.21 ± 0.11 | 0.721 |
| Postoperative month 3 | 0.21 ± 0.14* | 0.21 ± 0.13 | 0.986 |
| Postoperative month 6 | 0.21 ± 0.15* | 0.19 ± 0.08 | 0.383 |
| Postoperative month 12 | 0.20 ± 0.12* | 0.19 ± 0.10 | 0.669 |
| ΔTrefoil (1 mo–Preop) | 0.08 ± 0.14 | 0.03 ± 0.13 | 0.076 |
| Spherical aberration (μm) | |||
| Preoperative | 0.21 ± 0.07 | 0.21 ± 0.09 | 0.769 |
| Postoperative month 1 | 0.67 ± 0.27* | 0.59 ± 0.21* | 0.099 |
| Postoperative month 3 | 0.66 ± 0.25* | 0.60 ± 0.21* | 0.131 |
| Postoperative month 6 | 0.68 ± 0.26* | 0.62 ± 0.21* | 0.187 |
| Postoperative month 12 | 0.66 ± 0.25* | 0.63 ± 0.22* | 0.396 |
| ΔSA (1 mo–Preop) | 0.45 ± 0.25 | 0.38 ± 0.21 | 0.103 |
Note:
HOAs, higher-order aberrations; SR, strehl ratio; TCAs, Total corneal aberrations; SA, Spherical aberration; Δ, change. Mean ± standard deviation. *Significantly different between preoperative and postoperative values. **Significantly different between the two groups. P < 0.05 statistically significant.