Comparison of Partial Removal and Total Removal of the Corneal Epithelium on Keratoconus

patients underwent Corneal collagen cross-linking procedure with totally corneal epithelium removing. Total removal was performed by mechanical debridement of the corneal epithelium over the central 9 mm.

patients underwent Corneal collagen cross-linking procedure with partially corneal epithelium removing. Partial removal was performed by removing a 3-mm width ring and leaving the central 3 mm of the cornea intact.