Table 2 Repeatability of the Corvis ST parameters in normal eyes.
From: Repeatability and comparison of new Corvis ST parameters in normal and keratoconus eyes
Parameters | CV (%) | Cronbach’ α | ICC(95% CI) | S w | RC |
|---|---|---|---|---|---|
Established Variables | |||||
IOP (mmHg) | 0.11 | 0.93 | 0.93(0.90, 0.95) | 0.73 | 2.02 |
CCT (µm) | 0.06 | 0.99 | 0.99 (0.99, 0.99) | 4.88 | 13.52 |
DA Max (mm) | 0.08 | 0.91 | 0.91 (0.87, 0.94) | 0.05 | 0.14 |
A1T (ms) | 0.03 | 0.93 | 0.93 (0.90, 0.95) | 0.09 | 0.25 |
A1V (m/s) | 0.07 | 0.87 | 0.87 (0.81, 0.91) | 0.01 | 0.03 |
A2T (ms) | 0.01 | 0.92 | 0.92 (0.88, 0.94) | 0.17 | 0.47 |
A2V (m/s) | −0.10 | 0.84 | 0.83 (0.76, 0.89) | 0.02 | 0.06 |
HCT (ms) | 0.02 | 0.67 | 0.67 (0.52, 0.78) | 0.41 | 1.14 |
PD (mm) | 0.05 | 0.92 | 0.92 (0.88, 0.95) | 0.12 | 0.33 |
Radius (mm) | 0.09 | 0.81 | 0.81 (0.72, 0.87) | 0.44 | 1.22 |
A1DA (mm) | 0.08 | 0.49 | 0.48 (0.24, 0.65) | 0.01 | 0.03 |
HCDA (mm) | 0.08 | 0.91 | 0.91 (0.87, 0.94) | 0.05 | 0.14 |
A2DA (mm) | 0.18 | 0.85 | 0.85 (0.78, 0.9) | 0.04 | 0.11 |
A1DLL (mm) | 0.10 | 0.72 | 0.73 (0.60, 0.82) | 0.21 | 0.58 |
HCDLL (mm) | 0.10 | 0.66 | 0.66 (0.50, 0.78) | 0.61 | 1.69 |
A2DLL (mm) | 0.28 | 0.62 | 0.62 (0.44, 0.75) | 1.03 | 2.85 |
A1DLA (mm) | 0.11 | 0.80 | 0.80 (0.71, 0.87) | 0.00 | 0.00 |
HCDLA (mm) | 0.10 | 0.92 | 0.92 (0.89, 0.95) | 0.04 | 0.11 |
A2DLA(mm) | 0.09 | 0.63 | 0.63 (0.46, 0.75) | 0.01 | 0.03 |
DLAML (mm) | 0.09 | 0.94 | 0.94 (0.91, 0.96) | 0.04 | 0.11 |
DLAMT (ms) | 0.02 | 0.20 | 0.21 (−0.16, 0.47) | 0.64 | 1.77 |
WEMA (mm) | 0.20 | 0.83 | 0.83 (0.75, 0.89) | 0.05 | 0.14 |
WEMT (ms) | 0.04 | 0.75 | 0.75 (0.64, 0.83) | 0.76 | 2.11 |
A1DLAr (mm2) | 0.13 | 0.66 | 0.65 (0.49, 0.77) | 0.02 | 0.06 |
HCDLAr (mm2) | 0.14 | 0.92 | 0.92 (0.88, 0.95) | 0.23 | 0.64 |
A2DLAr (mm2) | 0.18 | 0.70 | 0.70 (0.56, 0.80) | 0.04 | 0.11 |
A1dArcL (mm) | 0.00 | 0.65 | 0.65 (0.49, 0.77) | 0.00 | 0.00 |
HCdArcL (mm) | −0.15 | 0.85 | 0.85 (0.78, 0.90) | 0.01 | 0.03 |
A2dArcL (mm) | 0.00 | 0.65 | 0.65 (0.49, 0.77) | 0.00 | 0.00 |
dArcLM (mm) | −0.2 | 0.90 | 0.89(0.85, 0.93) | 0.01 | 0.03 |
New Variables | |||||
Max Inverse Radius (mm−1) | 0.11 | 0.86 | 0.85 (0.78, 0.90) | 0.01 | 0.03 |
DA Ratio Max [2 mm] | 0.08 | 0.91 | 0.91 (0.87, 0.94) | 0.18 | 0.50 |
Pachy Slope (µm) | 0.19 | 0.96 | 0.96 (0.95, 0.98) | 2.50 | 6.93 |
DA Ratio Max [1 mm] | 0.03 | 0.91 | 0.91 (0.87, 0.94) | 0.03 | 0.08 |
ARTh | 0.17 | 0.90 | 0.90 (0.85, 0.93) | 45.08 | 124.87 |
bIOP (mmHg) | 0.10 | 0.93 | 0.93 (0.90, 0.96) | 0.71 | 1.97 |
Integrated Radius (mm−1) | 0.10 | 0.92 | 0.92 (0.88, 0.94) | 0.39 | 1.08 |
SP A1 | 0.12 | 0.92 | 0.92 (0.88, 0.95) | 6.07 | 16.81 |
CBI | 1.80 | 0.81 | 0.81 (0.72, 0.87) | 0.06 | 0.17 |
