ROC curve for specificity and sensitivity for SIF, SIB, CSIF, CSIB, EIF, EIB, RMSF, RMSB, SITHK, %TI, %EpiTI, ThkMin, KMaxF, KMaxB, KAvgF, KAvgB, DZMaxF, DZMaxB, and NPS parameters (from top-left to bottom-right) for normal and keratoconus subject groups.