Correlation between pigmented arc and epithelial thickness (COPE) study in orthokeratology-treated patients using OCT measurements

摘要

Right eye of a 14-year-old girl under ortho-k treatment for 29 months. a Corneal pigmented arc observed. b Wide epithelial thickness map (wETM) for verifying that all scanning lines match the real contour of different layers with no sign of central epithelial islands. c Vertical line-scan showing pigmented epithelium at inferior mid-peripheral cornea (arrowhead). d Corneal power measurements obtained by AS-OCT with “Good” measurement reliability rating. e Epithelium statistics in central 7-mm-diameter zone obtained using AS-OCT under wide-field pachymetry scan