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Table 4 Repeatability of Measurements Using the Pentacam in Dry Eyes Among Different OSDI Groups (n:138)

From: The repeatability of corneal topography measurements in severe Dry Eye disease

 

OSDI scores

 

32–50

(n: 30)

51–70

(n: 72)

71–100

(n: 36)

Model Coefficient (95% Wald CI)

P*

Model Coefficient (95% Wald CI)

P*

Model Coefficient (95% Wald CI)

P*

K1, D

0.987 (0.968–1.005)

< 0.001

0.978 (0.938–1.018)

< 0.001

0.978 (0.950–1.007)

< 0.001

K2, D

0.980 (0.950–1.010)

< 0.001

0.977 (0.941–1.023)

< 0.001

0.994 (0.967–1.021)

< 0.001

Apical pachymeter, micrometer

0.988 (0.970–1.006)

< 0.001

0.982 (0.949–1.016)

< 0.001

0.961 (0.871–1.052)

< 0.001

Thinnest pachymeter, micrometer

0.985 (0.964–1.006)

< 0.001

0.971 (0.934–1.008)

< 0.001

0.988 (0.975–1.001)

< 0.001

Kmax, D

0.947 (0.887–1.006)

< 0.001

0.868 (0.765–0.971)

< 0.001

0.958 (0.885–1.030)

< 0.001

Corneal volume, mm3

0.942 (0.808–1.076)

< 0.001

0.984 (0.961–1.007)

< 0.001

0.922 (0.827–1.017)

< 0.001

Corneal diameter, mm

0.970 (0.920–1.020)

< 0.001

0.974 (0.933–1.015)

< 0.001

0.962 (0.926–0.999)

< 0.001

Anterior chamber volume, mm3

0.984 (0.959–1.009)

< 0.001

0.996 (0.987–1.005)

< 0.001

0.957 (0.930–0.984)

< 0.001

Anterior chamber depth, mm

0.992 (0.980–1.004)

< 0.001

0.966 (0.913–1.018)

< 0.001

0.993 (0.937–1.050)

< 0.001

  1. *General Estimating Equations; OSDI Ocular surface disease index; CI confidence interval; D diopter