Skip to main content

Table 2 Intraobserver repeatability outcomes for corneal thickness obtained using Pentacam Scheimpflug imaging in children

From: The precision and agreement of corneal thickness and keratometry measurements with SS-OCT versus Scheimpflug imaging

Parameter

Observer

Mean ± SD

Sw

TRT

CoV (%)

ICC (95% CI)

Center

1st

542.66 ± 27.90

6.17

17.09

1.14

0.953 (0.932 to 0.968)

2nd

543.11 ± 28.85

5.30

14.68

0.98

0.967 (0.952 to 0.978)

Thinnest

1st

537.23 ± 28.42

7.27

20.15

1.35

0.937 (0.910 to 0.957)

2nd

537.67 ± 29.06

5.97

16.54

1.11

0.959 (0.941 to 0.972)

Nasal 2 mm

1st

555.26 ± 28.14

6.79

18.82

1.22

0.944 (0.920 to 0.962)

2nd

556.32 ± 29.41

6.11

16.92

1.10

0.958 (0.940 to 0.972)

Superior 2 mm

1st

562.38 ± 28.14

6.75

18.69

1.20

0.945 (0.921 to 0.962)

2nd

562.66 ± 29.36

6.46

17.88

1.15

0.953 (0.933 to 0.968)

Temporal 2 mm

1st

542.44 ± 27.91

7.18

19.88

1.32

0.937 (0.909 to 0.957)

2nd

542.77 ± 29.53

6.19

17.15

1.14

0.957 (0.939 to 0.971)

Inferior 2 mm

1st

543.71 ± 28.46

8.04

22.27

1.48

0.924 (0.892 to 0.948)

2nd

544.04 ± 29.29

6.85

18.96

1.26

0.947 (0.924 to 0.964)

Nasal 5 mm

1st

610.17 ± 29.88

11.06

30.65

1.81

0.874 (0.824 to 0.914)

2nd

611.59 ± 32.10

9.80

27.13

1.60

0.912 (0.876 to 0.940)

Superior 5 mm

1st

626.39 ± 31.49

11.51

31.89

1.84

0.877 (0.828 to 0.916)

2nd

626.06 ± 32.73

10.94

30.30

1.75

0.896 (0.853 to 0.929)

Temporal 5 mm

1st

578.10 ± 29.13

11.00

30.46

1.90

0.870 (0.818 to 0.910)

2nd

578.26 ± 31.92

10.32

28.59

1.78

0.902 (0.862 to 0.933)

Inferior 5 mm

1st

582.24 ± 31.00

12.34

34.19

2.12

0.857 (0.800 to 0.901)

2nd

583.09 ± 31.86

11.72

32.46

2.01

0.876 (0.826 to 0.915)

  1. Thickness data are in units of micrometer (μm); SD = standard deviation, Sw = within-subject standard deviation, TRT = test-retest repeatability (2.77 Sw), CoV = within-subject coefficient of variation, ICC = intraclass correlation coefficient