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Table 2 Baseline and postoperative 3mm and 6mm higher order aberrations in cases of moderate myopia treated with SMILE, femto-LASIK, and PRK

From: Matched comparison of corneal higher order aberrations induced by SMILE to femtosecond assisted LASIK and to PRK in correcting moderate and high myopia: 3.00mm vs. 6.00mm

Index Pupil diameter Surgical method Pre-operative 3 M follow-up 12 M follow-up One-year change P-value
Total coma (µm) 6-mm SMILE 0.22 ± 0.21 0.36 ± 0.16 0.38 ± 0.18 0.16 ± 0.23a 0.012b
0.021c
Femto-LASIK 0.21 ± 0.09 0.41 ± 0.23 0.46 ± 0.31 0.25 ± 0.23a
PRK 0.24 ± 0.17 0.45 ± 0.18 0.48 ± 0.20 0.24 ± 0.24a
3-mm SMILE 0.11 ± 0.10 0.14 ± 0.08 0.15 ± 0.11 0.04 ± 0.12 0.313b
0.791c
Femto-LASIK 0.17 ± 0.62 0.14 ± 0.11 0.16 ± 0.15 -0.01 ± 0.64
PRK 0.11 ± 0.08 0.14 ± 0.09 0.14 ± 0.13 0.03 ± 0.11
Total SA (µm) 6-mm SMILE 0.21 ± 0.04 0.30 ± 0.10 0.33 ± 0.12 0.11 ± 0.09a < 0.001a
< 0.001c
Femto-LASIK 0.21 ± 0.05 0.42 ± 0.10 0.45 ± 0.10 0.24 ± 0.10a
PRK 0.22 ± 0.07 0.43 ± 0.12 0.48 ± 0.11 0.26 ± 0.13a
3-mm SMILE 0.07 ± 0.03 0.07 ± 0.04 0.06 ± 0.03 -0.01 ± 0.04 0.125b
0.482c
Femto-LASIK 0.06 ± 0.02 0.07 ± 0.03 0.07 ± 0.04 0.01 ± 0.03
PRK 0.07 ± 0.03 0.07 ± 0.04 0.08 ± 0.03 0.01 ± 0.04
Total trefoil (µm) 6-mm SMILE 0.14 ± 0.19 0.14 ± 0.07 0.13 ± 0.05 -0.01 ± 0.17 0.198b
0.271c
Femto-LASIK 0.14 ± 0.06 0.18 ± 0.19 0.16 ± 0.15 0.02 ± 0.19
PRK 0.14 ± 0.08 0.16 ± 0.08 0.15 ± 0.05 0.01 ± 0.11
3-mm SMILE 0.12 ± 0.09 0.16 ± 0.08 0.14 ± 0.08 0.02 ± 0.12 0.122b
0.342c
Femto-LASIK 0.13 ± 0.09 0.14 ± 0.08 0.13 ± 0.12 0.00 ± 0.11
PRK 0.12 ± 0.07 0.15 ± 0.08 0.14 ± 0.10 0.02 ± 0.11
  1. a Within subgroup statistically significant change
  2. b Comparison of one-year change in indices between SMILE and femto-LASIK
  3. c Comparison of one-year change in indices between SMILE and PRK
  4. months, SA spherical aberration, PRK photorefractive keratectomy, SMILE small incision lenticule extraction, femto-LASIK femtosecond-assisted laser in-situ keratomileusis