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Table 3 Baseline and postoperative 3mm and 6mm higher order aberrations in cases of high 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

0.20 ± 0.09

0.52 ± 0.27

0.56 ± 0.28

0.36 ± 0.28a

0.535b

0.289c

Femto-LASIK

0.21 ± 0.09

0.50 ± 0.22

0.54 ± 0.22

0.33 ± 0.19a

PRK

0.21 ± 0.10

0.48 ± 0.24

0.52 ± 0.26

0.31 ± 0.24a

3-mm

SMILE

0.09 ± 0.06

0.14 ± 0.11

0.16 ± 0.12

0.05 ± 0.11a

0.233b

0.823c

Femto-LASIK

0.10 ± 0.07

0.16 ± 0.06

0.16 ± 0.09

0.06 ± 0.08a

PRK

0.09 ± 0.05

0.13 ± 0.08

0.14 ± 0.10

0.05 ± 0.10a

Total SA (µm)

6-mm

SMILE

0.21 ± 0.07

0.46 ± 0.15

0.45 ± 0.15

0.24 ± 0.14a

0.006b

< 0.001c

Femto-LASIK

0.23 ± 0.05

0.56 ± 0.12

0.53 ± 0.12

0.30 ± 0.13a

PRK

0.22 ± 0.06

0.61 ± 0.21

0.60 ± 0.21

0.38 ± 0.21a

3-mm

SMILE

0.06 ± 0.03

0.06 ± 0.03

0.08 ± 0.04

0.02 ± 0.04

0.106b

0.722c

Femto-LASIK

0.06 ± 0.03

0.08 ± 0.04

0.07 ± 0.03

0.01 ± 0.04

PRK

0.07 ± 0.03

0.06 ± 0.05

0.07 ± 0.04

-0.00 ± 0.06

Total trefoil (µm)

6-mm

SMILE

0.14 ± 0.07

0.16 ± 0.08

0.17 ± 0.08

0.03 ± 0.09

0.426b

0.130c

Femto-LASIK

0.17 ± 0.10

0.22 ± 0.15

0.21 ± 0.16

0.04 ± 0.16

PRK

0.13 ± 0.08

0.19 ± 0.11

0.18 ± 0.10

0.05 ± 0.12a

3-mm

SMILE

0.13 ± 0.09

0.21 ± 0.12

0.23 ± 0.10

0.10 ± 0.15a

< 0.001b

0.006c

Femto-LASIK

0.15 ± 0.09

0.16 ± 0.11

0.18 ± 0.13

0.03 ± 0.14

PRK

0.13 ± 0.09

0.16 ± 0.09

0.15 ± 0.11

0.02 ± 0.14

  1. a Within sub-group 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 SMILEand PRK
  4. months, SA spherical aberration, PRK photorefractive keratectomy, SMILE small incision lenticule extraction, femto-LASIK femtosecond-assisted laser in-situ keratomileusis