SMILE and Wavefront-Guided LASIK Out-Compete Other Refractive Surgeries in Ameliorating the Induction of High-Order Aberrations in Anterior Corneal Surface
Table 2
Preoperative and 6-month postoperative anterior corneal HOAs with 6 mm diameter central corneal zone (mean ± SD, μm).
Procedure
Total HOAs
SA
Horizontal coma
Vertical coma
LASIK
Preoperative
0.14 ± 0.04
0.25 ± 0.13
0.00 ± 0.14
−0.01 ± 0.18
6-month postoperative
0.25 ± 0.08
0.48 ± 0.15
0.02 ± 0.42
−0.11 ± 0.37
P value
<0.001
<0.001
0.666
0.007
WF-LASIK
Preoperative
0.16 ± 0.06
0.22 ± 0.18
0.01 ± 0.14
0.02 ± 0.26
6-month postoperative
0.23 ± 0.09
0.42 ± 0.15
−0.05 ± 0.23
−0.01 ± 0.33
P value
<0.001
<0.001
0.004
0.458
FS-LASIK
Preoperative
0.15 ± 0.04
0.23 ± 0.14
0.00 ± 0.16
−0.02 ± 0.31
6-month postoperative
0.25 ± 0.07
0.52 ± 0.20
0.01 ± 0.57
−0.20 ± 0.54
P value
<0.001
<0.001
0.754
0.003
SMILE
Preoperative
0.15 ± 0.06
0.21 ± 0.15
0.01 ± 0.13
−0.05 ± 0.17
6-month postoperative
0.22 ± 0.06
0.38 ± 0.14
0.09 ± 0.22
−0.27 ± 0.22
P value
<0.001
<0.001
<0.001
<0.001
Paired -tests were used to compare pre- and postoperative aberrations. LASIK: laser in situ keratomileusis; WF-LASIK: wavefront-guided laser in situ keratomileusis with iris registration; FS-LASIK: femtosecond laser-assisted laser in situ keratomileusis; SMILE: small incision lenticule extraction; HOAs: higher-order aberrations; SA: spherical aberration.
