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Table 1 Demographic information and study parameters in moderate (n = 372 eyes) and high (n = 171 eyes) myopic patients treated with SMILE, femto-LASIK, and PRK in this study

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

 

Moderate myopia

High myopia

SMILE

femto-LASIK

PRK

SMILE

femto-LASIK

PRK

Number of eyes

124

124

124

57

57

57

Age (years)

28.02 ± 5.22

28.21 ± 4.71

28.31 ± 6.32

27.76 ± 6.39

30.29 ± 7.63

28.79 ± 7.00

Sex (F)

66.1 %

62.9 %

64.5 %

61.8 %

58.8 %

63.6 %

ACT (µm)

561.08 ± 25.88

561.03 ± 25.88

560.73 ± 25.87

544.56 ± 17.26

551.00 ± 16.50

543.62 ± 18.66

Removal tissue thickness (µm)

106.63 ± 13.51

76.43 ± 13.79

73.41 ± 13.61

143.53 ± 16.28

112.33 ± 11.63

112.56 ± 12.38

MRSE (D)

Pre-op

-4.66 ± 0.85

-4.47 ± 0.82

-4.36 ± 0.72

-7.54 ± 0.92

-7.19 ± 0.61

-7.79 ± 1.37

After 12 M

0.15 ± 0.34

-0.00 ± 0.33

0.10 ± 0.35

-0.05 ± 0.47

-0.31 ± 0.28

-0.27 ± 0.58

Astigmatism (D)

Pre-op

-1.00 ± 0.80

-0.80 ± 0.58

-0.93 ± 0.71

-1.64 ± 1.15

-1.56 ± 1.41

-1.51 ± 0.91

After 12 M

-0.40 ± 0.40

-0.39 ± 0.29

-0.45 ± 0.29

-0.57 ± 0.53

-0.50 ± 0.05

-0.37 ± 0.20

UDVA (logMAR)

Pre-op

1.40 ± 0.26

1.37 ± 0.28

1.40 ± 0.14

1.75 ± 0.15

1.62 ± 0.33

1.73 ± 0.21

After 12 M

0.01 ± 0.03

0.00 ± 0.00

0.00 ± 0.02

0.01 ± 0.03

0.02 ± 0.06

0.05 ± 0.13

CDVA (logMAR)

Pre-op

0.00 ± 0.00

0.00 ± 0.00

0.00 ± 0.00

0.01 ± 0.03

0.00 ± 0.00

0.02 ± 0.04

After 12 M

0.00 ± 0.01

0.00 ± 0.00

0.00 ± 0.00

0.00 ± 0.00

0.01 ± 0.02

0.01 ± 0.02

Safety index

0.99 ± 0.03

1.00 ± 0.00

1.00 ± 0.00

1.04 ± 0.07

0.98 ± 0.04

1.04 ± 0.07

Efficacy index

0.99 ± 0.02

1.00 ± 0.00

1.00 ± 0.00

1.04 ± 0.07

0.98 ± 0.04

1.04 ± 0.07

  1. SMILE small incision lenticule extraction, femto-LASIK femtosecond-assisted laser in-situ keratomileusis, PRK photorefractive keratectomy with mitomycin-C, ACT apical corneal thickness, MRSE manifest refraction spherical equivalent, UDVA uncorrected distance visual acuity, CDVA corrected distance visual acuity
  2. Removal tissue thickness: maximum lenticule thickness in SMILE and ablation depth in femto-LASIK and PRK