Skip to main content

Table 3 Results of the repeatability analysis of the Colombo IOL measurements in normal subjects

From: Repeatability and reproducibility of a new spectral-domain optical coherence tomography biometer and agreement with swept-source optical coherence tomography based biometer

Parameter

 

Mean ± SD

Sw

TRT

CoV (%)

ICC (95% CI)

AL (mm)

1st

25.53 ± 1.27

0.01

0.02

0.03

1.000 (1.000–1.000)

 

2nd

25.51 ± 1.14

0.01

0.03

0.04

1.000 (1.000–1.000)

CCT (μm)

1st

529.81 ± 32.01

1.63

4.52

0.31

0.997 (0.996–0.998)

 

2nd

531.46 ± 29.41

1.18

3.26

0.22

0.998 (0.998–0.999)

AQD (mm)

1st

3.13 ± 0.30

0.04

0.10

1.18

0.985 (0.979–0.989)

 

2nd

3.14 ± 0.30

0.03

0.09

1.03

0.989 (0.983–0.993)

ACD (mm)

1st

3.66 ± 0.30

0.04

0.10

1.01

0.985 (0.980–0.989)

 

2nd

3.67 ± 0.31

0.03

0.09

0.88

0.989 (0.984–0.993)

LT (mm)

1st

3.82 ± 0.35

0.04

0.10

0.95

0.989 (0.985–0.992)

 

2nd

3.81 ± 0.34

0.04

0.12

1.13

0.984 (0.976–0.990)

Kf (D)

1st

43.11 ± 1.33

0.12

0.33

0.27

0.992 (0.989–0.994)

 

2nd

43.13 ± 1.37

0.13

0.36

0.30

0.991 (0.987–0.994)

Ks (D)

1st

44.13 ± 1.50

0.13

0.36

0.29

0.993 (0.990–0.995)

 

2nd

44.15 ± 1.50

0.13

0.36

0.30

0.992 (0.989–0.995)

Km (D)

1st

43.62 ± 1.39

0.10

0.28

0.23

0.995 (0.993–0.996)

 

2nd

43.64 ± 1.41

0.11

0.30

0.25

0.994 (0.991–0.996)

AST (D)

1st

1.02 ± 0.60

0.15

0.40

14.29

0.943 (0.924–0.959)

 

2nd

1.02 ± 0.60

0.15

0.40

14.17

0.943 (0.916–0.963)

J0 (D)

1st

 − 0.39 ± 0.38

0.08

0.22

 − 20.58

0.957 (0.942–0.969)

 

2nd

 − 0.38 ± 0.38

0.09

0.25

 − 23.20

0.946 (0.921–0.964)

J45 (D)

1st

0.14 ± 0.18

0.08

0.21

53.89

0.849 (0.801–0.888)

 

2nd

0.14 ± 0.19

0.08

0.22

56.26

0.852 (0.789–0.900)

WTW (mm)

1st

12.67 ± 0.55

0.14

0.39

1.10

0.937 (0.916–0.954)

 

2nd

12.63 ± 0.53

0.15

0.41

1.16

0.928 (0.894–0.952)

PD (mm)

1st

5.96 ± 1.20

0.32

0.89

5.41

0.931 (0.908–0.950)

 

2nd

5.95 ± 1.02

0.38

1.05

6.35

0.875 (0.821–0.917)

  1. AL = axial length; CCT = central corneal thickness; AQD = aqueous humor depth; ACD = anterior chamber depth; LT = lens thickness; Kf = flattest meridian keratometry; Ks = steepest meridian keratometry; Km = mean keratometry; AST = corneal astigmatism; J0 = astigmatism parameter J0; J45 = astigmatism parameter J45; WTW = white to white; PD = pupil diameter; SD = standard deviation; Sw = within-subject standard deviation; TRT = test–retest repeatability coefficient (2.77 × Sw); CoV = coefficient of variation; ICC = intraclass correlation coefficient; CI = confidence interval
Back to article page

Eye and Vision

ISSN: 2326-0254