Fig. 4

Fisher’s score of each variable of different classifiers to discriminate KC eyes from normal eyes. For KC eyes, using the Pentacam HR system alone and combining it with UHR-OCT, the feature that contributed to discrimination most by ranking was the maximum elevation value in the 5 mm area (a, c). Using UHR-OCT alone, the feature that contributed to discrimination most by ranking was SEI (I/S) (b). KC: keratoconus. UHR-OCT: Ultra-high-resolution optical coherence tomography; SEI (I/S): Localized thinning in the vertical meridian in the stroma