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Table 3 Comparison of wave-front aberration in the two groups pre and post surgery

From: Comparative study of wave-front aberration and corneal Asphericity after SMILE and LASEK for myopia: a short and long term study

 

pre SMILE

pre LASEK

SMILE 3 m

LASEK 3 m

p value

SMILE 3y

LASEK 3y

p value

Vertical coma

0.07 ± 0.26

0.01 ± 0.26

0.34 ± 0.45

0.61 ± 0.67

0.06

0.13 ± 0.55

0.58 ± 0.62

0.003*

Horizontal coma

−0.12 ± 0.49

− 0.16 ± 0.49

0.34 ± 0.59

0.20 ± 0.59

0.34

0.10 ± 0.55

0.15 ± 0.47

0.68

Vertical trefoil

−0.02 ± 0.26

0.01 ± 0.26

−0.03 ± 0.25

0.11 ± 0.28

0.04*

− 0.04 ± 0.29

0.02 ± 0.36

0.45

Horizontal trefoil

−0.14 ± 0.31

− 0.09 ± 0.43

0.00 ± 0.30

− 0.03 ± 0.46

0.83

− 0.18 ± 0.29

−0.08 ± 0.37

0.26

Spherical aberration

−0.19 ± 0.28

−0.14 ± 0.25

− 0.26 ± 0.28

−0.55 ± 0.41

0.002*

− 0.15 ± 0.33

−0.36 ± 0.45

0.04*

Coma

0.48 ± 0.30

0.50 ± 0.28

0.73 ± 0.48

0.88 ± 0.64

0.29

0.70 ± 0.57

0.88 ± 0.57

0.21

Trefoil

0.36 ± 0.24

0.45 ± 0.24

0.33 ± 0.20

0.46 ± 0.29

0.04*

0.36 ± 0.25

0.43 ± 0.28

0.30

HOA

0.29 ± 0.11

0.29 ± 0.11

0.39 ± 0.13

0.53 ± 0.17

< 0.001*

0.47 ± 0.15

0.55 ± 0.11

0.03*

  1. HOA: Higher order aberration
  2. 3 m: three months post operation
  3. 3y: three years post operation
  4. *p < 0.05 significantly different