Shajari M, et al. - Authors compared the results between standard and accelerated corneal collagen cross-linking (CXL) for the treatment of progressive keratoconus. A-CXL was favoured by considering less corneal thinning, whereas a higher treatment efficacy could be indicated by the deeper demarcation line and greater changes in minimum keratometric values in C-CXL. Altogether, successful results were provided by C-CXL, as well as A-CXL in the strengthening of corneal tissue. Both groups did not demonstrate any differences in uncorrected and corrected distance visual acuity, spherical equivalent, spherical and cylindrical error, maximal and average keratometry, central corneal thickness, corneal biomechanical properties, time of reepithelialization, subbasal nerve density, endothelial cell density and morphology.