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Table 2 Intra-observer repeatability of ocular biological parameters measured using the new swept-source optical coherence tomography biometer in children after wearing orthokeratology lens

From: Effect of orthokeratology on precision and agreement assessment of a new swept-source optical coherence tomography biometer

Parameter

Observer

Mean ± SD

Sw

R

CoV (%)

ICC

AL (mm)

1st

25.15 ± 0.99

0.01

0.03

0.04

1.000

2nd

25.14 ± 0.99

0.01

0.04

0.06

1.000

CCT (μm)

1st

529.21 ± 31.95

4.01

11.10

0.76

0.983

2nd

529.22 ± 32.64

4.27

11.83

0.81

0.983

ACD (mm)

1st

3.65 ± 0.22

0.02

0.06

0.64

0.983

2nd

3.65 ± 0.23

0.05

0.13

1.23

0.962

LT (mm)

1st

3.49 ± 0.20

0.03

0.08

0.82

0.967

2nd

3.48 ± 0.20

0.04

0.11

1.18

0.96

Km (Φ = 2.5) (D)

1st

40.81 ± 1.55

0.08

0.22

0.19

0.993

2nd

40.80 ± 1.57

0.13

0.36

0.32

0.993

Km (Φ = 3.0) (D)

1st

41.17 ± 1.56

0.07

0.19

0.16

0.994

2nd

41.16 ± 1.58

0.11

0.30

0.26

0.995

CD (mm)

1st

11.94 ± 0.39

0.06

0.17

0.51

0.974

2nd

11.95 ± 0.38

0.08

0.22

0.66

0.958

  1. AL= Axial length; CCT= central corneal thickness; ACD= anterior chamber depth (corneal epithelium to lens); LT= lens thickness; Km= mean keratometry; CD= corneal diameter; SD= standard deviation; Sw= within-subject standard deviation; R= reproducibility limit (2.77 Sw); CoV= within-subject coefficient of variation; ICC= intraclass correlation coefficient