Fig. 9
From: Keratectasia severity staging and progression assessment based on the biomechanical E-staging
The “Homburg Biomechanical E-Staging” Corvis ST® (Oculus, Wetzlar, Germany) display of a male 24-year-old patient with keratoconus and follow-up examinations from 2019 to 2021. Red, baseline examination (Nov 21, 2019). Green, first follow-up with same biomechanical E-staging (Nov 26, 2020). Yellow, second follow-up with biomechanical progression detected by the Corvis ST® (May 10, 2021). Blue, third follow-up with further progression (Nov 11, 2021)