Refractive surgery for keratoconus

摘要

Dear Editor: We read with interest the recent article by Kymionis et al, and would like to offer our comments. The authors, in this prospective study, demonstrated improvement in both visual acuity and mean corneal astigmatism in kefatoconus patients undergoing corneal collagen cross-linking (CXL). The corneal epithelium was removed by transepithelial phototherapeutic keratectomy (t-PTK). When considering the outcomes of the insignificant changes in visual acuity and mean corneal astigmatism after CXL with mechanical epithelial debridement, the authors concluded that epithelial removal using t-PTK during CXL results in better visual and refractive outcomes in comparison with mechanical epithelial debridement.