Skip to main content

Table 1 Intra-observer repeatability of ocular biological parameters measured using the new swept-source optical coherence tomography biometer in children before 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

0.02

0.06

0.08

1.000

2nd

25.15 ± 0.99

0.01

0.03

0.04

1.000

CCT (μm)

1st

537.59 ± 31.76

4.38

12.13

0.81

0.981

2nd

537.46 ± 31.49

4.01

11.10

0.75

0.984

ACD (mm)

1st

3.72 ± 0.19

0.02

0.06

0.61

0.986

2nd

3.73 ± 0.19

0.02

0.06

0.63

0.984

LT (mm)

1st

3.43 ± 0.14

0.03

0.09

0.91

0.953

2nd

3.43 ± 0.14

0.03

0.08

0.83

0.960

Km (Φ = 2.5) (D)

1st

43.15 ± 1.45

0.10

0.28

0.23

0.995

2nd

43.18 ± 1.44

0.08

0.22

0.18

0.997

Km (Φ = 3.0) (D)

1st

43.13 ± 1.46

0.09

0.26

0.21

0.996

2nd

43.15 ± 1.46

0.07

0.19

0.16

0.998

CD (mm)

1st

11.96 ± 0.43

0.06

0.17

0.51

0.980

2nd

11.96 ± 0.41

0.06

0.17

0.51

0.978

  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