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Table 3 Data from ocular response analyzer (ORA) measurement

From: Corneal biomechanical properties after SMILE versus FLEX, LASIK, LASEK, or PRK: a systematic review and meta-analysis

First author

Procedure

N (eye) at last follow-up

Preoperative CH (mmHg)

Postoperative CH (mmHg)

CH change (mmHg)

Preoperative CRF (mmHg)

Postoperative CRF (mmHg)

CRF change (mmHg)

Mean ± SD

Mean ± SD

Mean ± SD

Mean ± SD

Mean ± SD

Mean ± SD

Anders H. Vestergaard [45, 46]

SMILE

34

11.00 ± 1.70

7.80 ± 1.30

−3.30 ± 1.20

10.90 ± 1.90

6.40 ± 1.40

−4.60 ± 1.20

 

FLEX

34

10.80 ± 1.70

8.00 ± 1.10

−2.70 ± 1.30

10.90 ± 1.80

6.40 ± 1.40

−4.50 ± 1.20

Danyang Wang [47]

SMILE(SE ≤ -6.00D)

124

10.56 ± 1.89

N/A

N/A

10.48 ± 1.89

N/A

N/A

FS-LASIK (SE ≤ -6.00D)

49

10.45 ± 1.33

N/A

N/A

10.07 ± 1.40

N/A

N/A

SMILE (SE > −6.00D)

63

10.49 ± 1.51

N/A

N/A

10.86 ± 1.59

N/A

N/A

FS-LASIK (SE > −6.00D)

30

10.15 ± 1.48

N/A

N/A

10.15 ± 1.70

N/A

N/A

Iben Bach Pedersen [48]

SMILE

29

N/A

8.56 ± 1.02

N/A

N/A

7.12 ± 1.24

N/A

FLEX

31

N/A

8.48 ± 1.00

N/A

N/A

7.00 ± 1.22

N/A

FS-LASIK

35

N/A

8.58 ± 0.89

N/A

N/A

7.12 ± 1.06

N/A

Kazutaka Kamiya [49]

SMILE

24

10.50 ± 1.30

8.50 ± 1.00

N/A

10.00 ± 1.70

7.10 ± 1.30

N/A

FLEX

24

10.40 ± 1.60

8.30 ± 1.10

N/A

9.80 ± 1.70

6.70 ± 1.40

N/A

Di Wu [39]

SMILE

37b

N/A

8.59 ± 1.00

−1.94 ± 0.82

N/A

7.78 ± 1.03

−3.59 ± 0.91

FS-LASIK

34b

N/A

8.11 ± 0.66

−2.34 ± 1.08

N/A

6.94 ± 0.66

−4.29 ± 1.60

Alper Agca [38]

SMILE

30

10.89 ± 1.79

8.95 ± 1.47

−1.94 ± 1.52

10.73 ± 1.71

7.77 ± 1.37

−2.96 ± 1.69

FS-LASIK

30

11.00 ± 1.53

9.02 ± 1.27

−1.98 ± 1.50

10.76 ± 1.45

8.07 ± 1.26

−2.69 ± 1.44

Rui Dou [51]

SMILE

36

10.00 ± 0.82

8.51 ± 0.84

−1.48 ± 0.80

10.10 ± 0.68

7.61 ± 0.83

−2.49 ± 0.71

LASEK

35

9.99 ± 1.31

8.47 ± 1.29

−1.52 ± 1.23

10.21 ± 1.72

7.53 ± 1.42

−2.68 ± 1.03

Wenjing Wu [40]

SMILE

75

10.16 ± 1.30

8.30 ± 1.04

−1.86 ± 1.13

10.39 ± 1.52

7.25 ± 1.31

−3.14 ± 1.06

FS-LASIK

75

10.09 ± 1.38

7.86 ± 1.03

−2.23 ± 1.33

10.57 ± 1.64

6.77 ± 1.13

−3.80 ± 1.53

Hua Li [30]

SMILE

44b

10.16 ± N/A

7.94 ± 1.07a

N/A

10.41 ± N/A

6.83 ± 1.18a

N/A

FS-LASIK

38b

10.32 ± N/A

7.84 ± 0.88a

N/A

10.74 ± N/A

6.58 ± 1.01a

N/A

Ihab Mohamed Osman [36]

SMILE

25

12.03 ± 1.76

9.99 ± 1.76

N/A

11.42 ± 1.68

9.43 ± 1.55

N/A

LASIK

25

11.59 ± 1.86

8.46 ± 1.76

N/A

11.00 ± 1.89

7.45 ± 2.39

N/A

Bingjie Wang [41]

SMILE

50

10.52 ± 1.71

7.97 ± 2.05

−2.55 ± 1.44

10.07 ± 1.49

7.83 ± 1.64

−2.24 ± 1.29

FS-LASIK

56

10.85 ± 1.19

8.31 ± 1.62

−2.53 ± 1.38

10.62 ± 1.81

7.29 ± 1.76

−3.33 ± 1.34

Lei Xia [52]

SMILE

69

10.99 ± 1.65

8.58 ± 1.40

N/A

11.26 ± 1.94

7.05 ± 1.65

N/A

FS-LASIK

59

10.76 ± 1.67

7.97 ± 1.14

N/A

10.60 ± 1.99

6.31 ± 1.41

N/A

Minjie Chen [53]

SMILE

67b

10.40 ± 1.70

8.30 ± 1.20

−2.20 ± 1.40

11.00 ± 1.70

7.00 ± 1.20

−4.10 ± 1.40

LASEK

66b

10.00 ± 1.20

7.70 ± 1.20

−2.20 ± 1.20

10.30 ± 1.40

7.00 ± 1.50

−3.30 ± 1.00

Yusuf Yildirim [54]

SMILE

42

10.90 ± 1.70

8.40 ± 1.50

−2.50 ± 1.10

11.10 ± 1.50

7.90 ± 1.60

−3.30 ± 1.10

PRK

42

10.40 ± 1.30

8.50 ± 1.30

−1.90 ± 1.20

10.80 ± 1.10

7.40 ± 1.50

−2.70 ± 1.10

Jun Zhang [55]

SMILE

80

10.64 ± 1.09

7.91 ± 0.92

N/A

10.54 ± 1.53

7.07 ± 1.27

N/A

FS-LASIK

80

10.83 ± 1.60

8.00 ± 1.32

N/A

10.71 ± 1.74

6.82 ± 1.40

N/A

Mohamed Nagy Elmohamady [57]

SMILE

35

10.58 ± 0.39

8.51 ± 0.51

N/A

10.21 ± 0.09

8.38 ± 0.59

N/A

 

LASIK

30

10.62 ± 0.53

7.58 ± 0.71

N/A

10.19 ± 0.12

7.17 ± 0.68

N/A

 

FS-LASIK

38

10.71 ± 0.47

7.60 ± 0.61

N/A

10.22 ± 0.10

7.25 ± 0.69

N/A

Manrong Yu [58]

SMILE

32

10.50 ± 2.10

8.70 ± 1.40

N/A

11.10 ± 1.70

7.40 ± 1.10

N/A

LASEK

32

10.10 ± 1.30

8.80 ± 1.50

N/A

10.20 ± 1.60

7.20 ± 1.70

N/A

Esraa El-Mayah [59]

SMILE

30

8.85 ± 1.80

7.37 ± 1.29

−1.44 ± 1.65

8.53 ± 2.26

6.03 ± 1.63

−2.49 ± 1.74

FS-LASIK

30

9.83 ± 1.43

7.83 ± 1.15

−1.91 ± 0.77

9.76 ± 2.17

7.40 ± 1.35

−2.33 ± 1.27

  1. Abbreviations: CH corneal hysteresis, CRF corneal resistance factor, FLEX femtosecond lenticule extraction, FS femtosecond Laser, LASEK laser-assisted subepithelial keratectomy, LASIK laser-Assisted in situ keratomileusis, N/A not available, PRK photorefractive keratectomy, SMILE small incision lenticule extraction. a the value of SD was imputed from the other four studies in the same subgroup. b The number of patients at the last follow-up visit differed from the number at baseline
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BMC Ophthalmology

ISSN: 1471-2415

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