Research Article
Comparative Analysis of Anterior Segment Parameters in Normal and Keratoconus Eyes Generated by Scheimpflug Tomography
Table 2
ROC curve analysis for the keratoconus eyes versus normal eyes.
| Parameters | AUC | SE | 95% CI | | Cutoff | Sensitivity | Specificity |
| Topographic map | | | | | | | | Kflat (Ant.) | 0.755 | 0.014 | 0.728–0.783 | <0.001 | 45.15 | 0.500 | 0.915 | Ksteep (Ant.) | 0.857 | 0.011 | 0.836–0.878 | <0.001 | 46.45 | 0.685 | 0.929 | Kmean (Ant.) | 0.820 | 0.012 | 0.796–0.844 | <0.001 | 45.25 | 0.646 | 0.863 | Kmax | | | | | | | | Astigmatism (Ant.) | 0.815 | 0.013 | 0.791–0.840 | <0.001 | 1.65 | 0.733 | 0.816 | Asphericity (Ant.) | 0.795 | 0.014 | 0.768–0.721 | <0.001 | −0.565 | 0.974 | 0.618 | Kflat (Post.) | 0.757 | 0.014 | 0.729–0.785 | <0.001 | −6.55 | 0.939 | 0.516 | Ksteep (Post.) | 0.842 | 0.012 | 0.819–0.865 | <0.001 | −6.85 | 0.941 | 0.674 | Kmean (Post.) | 0.819 | 0.012 | 0.795–8.44 | <0.001 | −6.65 | 0.945 | 0.631 | Kmax | 0.928 | 0.008 | 0.914–0.943 | <0.001 | 47.05 | 0.839 | 0.935 | Astigmatism (Post.) | 0.802 | 0.013 | 0.776–0.828 | <0.001 | 0.45 | 0.708 | 0.828 | Asphericity (Post.) | 0.780 | 0.014 | 0.752–0.807 | <0.001 | −0.555 | 0.892 | 0.678 | TCT | 0.915 | 0.08 | 0.899–0.932 | <0.001 | 506.5 | 0.890 | 0.832 | Cornea Vol | 0.713 | 0.015 | 0.701–0.760 | <0.001 | 58.55 | 0.695 | 0.687 | AC Vol | 0.650 | 0.017 | 0.617–0.683 | <0.001 | 169.5 | 0.769 | 0.452 | ACD | 0.724 | 0.015 | 0.695–0.754 | <0.001 | 3.155 | 0.703 | 0.631 | AC Angle | 0.584 | 0.017 | 0.550–0.618 | <0.001 | 33.25 | 0.854 | 0.278 | Topometric map | | | | | | | | ISV | 0.954 | 0.006 | 0.942–0.966 | <0.001 | 31.5 | 0.878 | 0.962 | IVA | 0.963 | 0.006 | 0.952–0.974 | <0.001 | 0.255 | 0.913 | 0.964 | KI | 0.970 | 0.005 | 0.960–0.979 | <0.001 | 1.055 | 0.910 | 0.982 | CKI | 0.824 | 0.013 | 0.798–0.849 | <0.001 | 1.015 | 0.727 | 0.982 | IHA | 0.883 | 0.10 | 0.863–0.902 | <0.001 | 8.65 | 0.757 | 0.886 | IHD | 0.951 | 0.006 | 0.938–0.963 | <0.001 | 0.0175 | 0.900 | 0.890 | Rmin | 0.929 | 0.008 | 0.914–0.943 | <0.001 | 7.085 | 0.968 | 0.807 | HOR Q | 0.811 | 0.13 | 0.895–0.837 | <0.001 | −0.495 | 0.896 | 0.711 | VERT Q | 0.719 | 0.015 | 0.689–0.750 | <0.001 | −0.625 | 0.951 | 0.545 | BAD maps | | | | | | | | Front diff. | 0.910 | 0.008 | 0.894–0.926 | <0.001 | 8.5 | 0.716 | 1 | Back diff. | 0.954 | 0.006 | 0.942–0.966 | <0.001 | 12.5 | 0.873 | 0.961 | Dist.Apex-Th | 0.512 | 0.17 | 0.478–0.545 | 0.499 | 0.955 | 0.314 | 0.760 | F.Ele.Th | 0.959 | 0.006 | 0.947–0971 | <0.001 | 5.5 | 0.913 | 0.974 | B.Ele.Th | 0.967 | 0.005 | 0.956–0.977 | <0.001 | 13.5 | 0.932 | 0.949 | ProgMin | 0.935 | 0.008 | 0.921–0.950 | <0.001 | 0.925 | 0.854 | 0.972 | ProgMax | 0.964 | 0.005 | 0.953–0.974 | <0.001 | 1.675 | 0.888 | 0.978 | ProgAvg | 0.955 | 0.006 | 0.943–0.968 | <0.001 | 1.185 | 0.914 | 0.951 | ARTmax | 0.961 | 0.006 | 0.949–0.972 | <0.001 | 311 | 0.966 | 0.907 | Df | 0.949 | 0.006 | 0.937–0.962 | <0.001 | 2.575 | 0.847 | 0.972 | Db | 0.957 | 0.006 | 0.946–0.968 | <0.001 | 1.72 | 0.882 | 0.943 | Dp | 0.954 | 0.006 | 0.942–0.967 | <0.001 | 1.855 | 0.919 | 0.951 | Dt | 0.914 | 0.008 | 0.897–0.930 | <0.001 | 0.955 | 0.830 | 0.888 | Da | 0.964 | 0.006 | 0.953–0.975 | <0.001 | 1.62 | 0.905 | 0.968 | D | 0.972 | 0.005 | 0.963–0.982 | <0.001 | 2.615 | 0.932 | 0.990 |
|
|
AUC: Area Under ROC Curve. SE: Standard error. CI: Confidence Interval. : Probability.
|