Chan TCY, et al. - For diagnostic ability in recognizing corneal ectasia, authors gauged and compared corneal tomography and biomechanical and combined parameters. Participants included consecutive patients with subclinical keratoconus (SCKC) and age-matched controls. A higher capability in differentiating normal from SCKC eyes was demonstrated by the use of tomographic and biomechanical parameters in combination vs tomographic analysis alone. Between normal and SCKC eyes, a significant difference was found in the final D value and tomographic biomechanical index (TBI). The area under the receiver operating characteristic curve (AUC) and partial AUC (pAUC) of TBI were significantly higher than all parameters from Pentacam, as seen in the comparative analysis between these parameters.