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Table 2 Intra- and interobserver reproducibility of anterior chamber angle measurements made by Fourier Domain OCT

From: Fourier domain optical coherence tomography to assess the iridocorneal angle and correlation study in a large Caucasian population

Intraobserver reproducibility

Mean ± SD

ICC

95 % CI

P value

TIA Session 1 (degrees)

33.66 ± 11.38

0.979

0.969–0.986

<0.001

TIA Session 2 (degrees)

33.69 ± 10.94

AOD500 Session 1 (μm)

491.16 ± 281.25

0.991

0.987–0.994

<0.001

AOD500 Session 2 (μm)

492.02 ± 280.84

TISA500 Session 1 (mm2)

0.178 ± 0.104

0.962

0.944–0.974

<0.001

TISA500 Session 2 (mm2)

0.181 ± 0.112

Interobserver reproducibility

Mean ± SD

ICC

95 % CI

P value

TIA Observer 1 (degrees)

33.66 ± 11.38

0.954

0.933–0.969

<0.001

TIA Observer 2 (degrees)

33.03 ± 10.55

AOD500 Observer 1 (μm)

491.16 ± 281.25

0.975

0.964–0.983

<0.001

AOD500 Observer 2 (μm)

480.15 ± 295.72

TISA500 Observer 1 (mm2)

0.178 ± 0.104

0.947

0.922–0.964

<0.001

TISA500 Observer 2 (mm2)

0.174 ± 0.116

  1. TIA trabecular-iris angle, AOD 500 angle opening distance 500 μm from the scleral spur, TISA 500 trabecular-iris space area 500 μm from the scleral spur. ICC intraclass correlation coefficient, 95 % CI = 95 % confidence interval