Fig. 1
From: Keratectasia severity staging and progression assessment based on the biomechanical E-staging
“Topometric/KC-Staging” Pentacam® display (Oculus, Wetzlar, Germany) of a left eye of a 39-year-old male keratoconus patient. Stages for “A”, “B” and “C” according to the tomographic ABCD keratoconus staging are automatically calculated and displayed under the heading “Belin ABCD Keratoconus Staging”. Staging result for this eye: A4B4C2