Fig. 2
From: Early diagnosis of keratoconus using corneal biomechanics and OCT derived technologies
Receiver operating characteristic (ROC) curves of single and combined parameters for forme fruste keratoconus (FFKC) discriminating ability. The discriminating ability accuracies of the Fourier indices were assessed between FFKC and control. ROC curves for each Fourier index for the central 6 mm of the cornea, the asymmetry component of the anterior and the posterior cornea, CBI, TBI, BAD-D, and combined posterior asymmetry and CBI (combined metric) are shown. FFKC eyes had the highest area under the ROC curve (AUROC) values for the combined metric. CBI corneal biomechanical index; TBI, tomographic and biomechanical index; BAD-D, Belin/Ambrósio enhanced ectasia display total deviation