Aim. To analyse factors that correlate with best corrected visual acuity (BCVA) improvement after Intacs and trans-epithelial corneal collagen crosslinking with riboflavin-carboxymethylcellulose. Methods. A 3-year retrospective study of 14 eyes that underwent trans-epithelial crosslinking and same day Intacs. Results. The mean preoperative BCVA and spherical equivalent were significantly related to BCVA postoperatively. Conclusion. Poorer preoperative BCVA and spherical equivalent were associated with greater improvement in postoperative BCVA.