Fig. 17
From: Multimodal diagnostics for keratoconus and ectatic corneal diseases: a paradigm shift
Keratograph 5M shows the Placido rings and the relatively normal axial curvature topography of a 27-year-old female with a posterior polymorphous corneal dystrophy (PPCD) and considered with (a)Â forme fruste keratoconus (FFKC) in the right eye (OD) and (b)Â a mild inferior steepening in the left eye (OS)