Corneal cross-linking in patients with radial keratotomy: short-term follow-up.

Purpose: To record visual and refractive data in eyes with previous radial keratotomy (RK) and corneal instability undergoing corneal cross-linking (CXL).

Methods: Case series of eyes with RK and refractive instability undergoing CXL with riboflavin and UV-A radiation. The following variables were recorded before 3 and 6 months after CXL: sphere, spherical equivalent (SE), uncorrected visual acuity (UCVA), best spectacle-corrected visual acuity (BSCVA), topographic astigmatism, mean topographic K (Km), pachymetry, and Q values.