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Table 2 Summary of the intrasession repeatability outcomes for the anatomical measurements evaluated with the VX120 system

From: Intrasession repeatability of ocular anatomical measurements obtained with a multidiagnostic device in healthy eyes

 

Overall mean (SD) Overall median (Range)

Sw

Pr

CV (%)

ICC (Range 95% CI)

ACD (mm)

2.86 (0.29)

2.83 (2.10 to 3.77)

0.03

0.06

1.16

0.992

(0.989 to 0.994)

PCTN3 (μm)

592.04 (39.87)

601.00 (533.67 to 699.00)

8.98

17.59

1.52

0.976

(0.957 to 0.987)

PCTN2 (μm)

567.77 (37.83)

575.67 (506.33 to 675.33)

7.05

13.81

1.25

0.984

(0.971 to 0.991)

PCTN1 (μm)

574.89 (45.35)

549.67 (508.33 to 699.00)

7.70

15.09

1.34

0.984

(0.972 to 0.992)

CCT (μm)

545.88 (34.70)

544.67 (428.00 to 657.67)

6.41

12.56

1.17

0.983

(0.977 to 0.988)

PCTT1 (μm)

553.27 (37.44)

545.67 (492.00 to 664.33)

5.91

11.59

1.08

0.987

(0.977 to 0.993)

PCTT2 (μm)

568.70 (37.58)

573.33 (510.67 to 681.33)

6.06

11.87

1.07

0.987

(0.977 to 0.993)

PCTT3 (μm)

593.76 (38.58)

598.67 (529.00 to 708.00)

8.33

16.33

1.41

0.979

(0.963 to 0.989)

IAN (°)

37.17 (4.35)

37.00 (28.33 to 46.00)

0.84

1.65

2.23

0.970

(0.946 to 0.984)

IAT (°)

39.63 (4.59)

39.67 (30.67 to 50.33)

0.52

1.02

1.32

0.994

(0.988 to 0.997)

WTW (mm)

12.21 (0.57)

12.17 (10.99 to 13.94)

0.24

0.46

1.95

0.873

(0.823 to 0.911)

  1. Abbreviations: SD standard deviation, CV coefficient of variation, S w within-subject standard deviation, Pr intrasubject precision: 1.96 x Sw, ICC intraclass correlation coefficient, ACD anterior chamber depth, PCT N1 , PCT N2 , and PCT N3 peripheral corneal thickness at 1, 2 and 3 mm from vertex nasally, PCT T1 , PCT T2 , and PCT T3 peripheral corneal thickness at 1, 2 and 3 mm from vertex temporally, CCT central corneal thickness, IA N and IA T nasal and temporal irido-corneal angles and WTW horizontal white-to-white corneal diameter
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