Table 3 Repeatability of the Corvis ST parameters in keratoconus eyes.
From: Repeatability and comparison of new Corvis ST parameters in normal and keratoconus eyes
Parameters | CV (%) | Cronbach’ α | ICC (95% CI) | Sw | RC |
|---|---|---|---|---|---|
Established Variables | |||||
IOP (mmHg) | 0.19 | 0.95 | 0.95 (0.92, 0.97) | 1.00 | 2.77 |
CCT (µm) | 0.09 | 0.99 | 0.99 (0.99, 1.00) | 5.93 | 16.43 |
DA Max (mm) | 0.11 | 0.94 | 0.94 (0.91, 0.96) | 0.05 | 0.14 |
A1T (ms) | 0.04 | 0.94 | 0.94 (0.92, 0.96) | 0.11 | 0.30 |
A1V (m/s) | 0.18 | 0.93 | 0.93 (0.89, 0.95) | 0.01 | 0.03 |
A2T (ms) | 0.02 | 0.91 | 0.91 (0.87, 0.94) | 0.22 | 0.61 |
A2V (m/s) | −0.16 | 0.90 | 0.91 (0.86, 0.94) | 0.03 | 0.08 |
HCT (ms) | 0.02 | 0.55 | 0.54 (0.33, 0.69) | 0.45 | 1.25 |
PD (mm) | 0.05 | 0.92 | 0.92(0.88, 0.95) | 0.12 | 0.33 |
Radius (mm) | 0.18 | 0.94 | 0.94 (0.91, 0.96) | 0.41 | 1.14 |
A1DA (mm) | 0.07 | 0.73 | 0.73 (0.61, 0.82) | 0.01 | 0.03 |
HCDA (mm) | 0.11 | 0.94 | 0.94 (0.91, 0.96) | 0.05 | 0.14 |
A2DA (mm) | 0.18 | 0.87 | 0.87 (0.81, 0.91) | 0.05 | 0.14 |
A1DLL (mm) | 0.13 | 0.67 | 0.66 (0.50, 0.78) | 0.27 | 0.75 |
HCDLL (mm) | 0.22 | 0.67 | 0.67 (0.50, 0.79) | 1.06 | 2.94 |
A2DLL (mm) | 0.29 | 0.54 | 0.53 (0.27, 0.70) | 1.06 | 2.94 |
A1DLA(mm) | 0.09 | 0.93 | 0.93 (0.89, 0.95) | 0.01 | 0.03 |
HCDLA (mm) | 0.13 | 0.97 | 0.96 (0.95, 0.98) | 0.04 | 0.11 |
A2DLA (mm) | 0.17 | 0.64 | 0.64 (0.47, 0.76) | 0.02 | 0.06 |
DLAML (mm) | 0.12 | 0.95 | 0.95 (0.93, 0.97) | 0.05 | 0.14 |
DLAMT (ms) | 0.03 | 0.30 | 0.31 (−0.01, 0.54) | 0.70 | 1.94 |
WEMA (mm) | 0.25 | 0.88 | 0.88(0.82, 0.92) | 0.04 | 0.11 |
WEMT (ms) | 0.03 | 0.62 | 0.60 (0.42, 0.73) | 0.85 | 2.35 |
A1DLAr (mm2) | 0.16 | 0.82 | 0.82 (0.73, 0.88) | 0.02 | 0.06 |
HCDLAr (mm2) | 0.15 | 0.94 | 0.93 (0.90, 0.96) | 0.25 | 0.69 |
A2DLAr (mm2) | 0.28 | 0.53 | 0.53 (0.32, 0.69) | 0.08 | 0.22 |
A1dArcL (mm) | 0.00 | 0.81 | 0.82 (0.73, 0.88) | 0.00 | 0.00 |
HCdArcL (mm) | −0.36 | 0.48 | 0.47 (0.23, 0.65) | 0.05 | 0.14 |
A2dArcL (mm) | −0.50 | 0.82 | 0.82 (0.74, 0.88) | 0.01 | 0.03 |
dArcLM (mm) | −0.21 | 0.78 | 0.78 (0.68, 0.85) | 0.03 | 0.08 |
New Variables | |||||
Max Inverse Radius (mm−1) | 0.17 | 0.79 | 0.79 (0.69, 0.86) | 0.03 | 0.08 |
DA Ratio Max [2 mm] | 0.24 | 0.98 | 0.98 (0.96, 0.98) | 0.4 | 1.11 |
Pachy Slope (µm) | 0.45 | 0.98 | 0.98 (0.97, 0.99) | 8.62 | 23.88 |
DA Ratio Max[1 mm] | 0.06 | 0.96 | 0.96 (0.94, 0.97) | 0.04 | 0.11 |
ARTh | 0.53 | 0.99 | 0.99 (0.98, 0.99) | 24.58 | 68.09 |
bIOP (mmHg) | 0.16 | 0.94 | 0.94 (0.92, 0.96) | 0.99 | 2.74 |
Integrated Radius (mm−1) | 0.22 | 0.98 | 0.98 (0.97, 0.98) | 0.72 | 1.99 |
SP A1 | 0.32 | 0.98 | 0.98 (0.97, 0.99) | 5.56 | 15.40 |
CBI | 0.34 | 0.95 | 0.95 (0.93, 0.97) | 0.11 | 0.30 |
