Fig. 20
From: Multimodal diagnostics for keratoconus and ectatic corneal diseases: a paradigm shift
Tomographic-Biomechanical Display of the patient with posterior polymorphous corneal dystrophy (PPCD) and forme fruste keratoconus (FFKC) with (a)Â relatively high tomographic biomechanical index (TBI) in the right eye (OD) and (b)Â relatively normal TBI in the left eye (OS)