Comparison of corneal pachymetry evolution after accelerated corneal crosslinking in keratoconus eyes using anterior segment optical coherence tomography and Scheimpflug imaging

Corneal Scheimpflug and AS-OCT based thickness measurements are not interchangeable. Corneal thinning after A-CXL detected by Pentacam HR was not observed in Casia 2 measurements. Since higher densitometry values did not correlate with a greater inter-device measurement difference, Scheimpflug-based corneal thickness measurements should be interpreted cautiously during the first year after A-CXL.