Efficacy and Safety ofCACXL in the Treatment of Keratoconus With Thin Corneas

40 eyes of 30 patients underwent CACXL. The central 9 mm of corneal epithelium was abraded , Iso-tonic riboflavin 0.1% was applied every 2 minutes for 10 minutes on the debrided cornea. A disposable soft Contact lens without an ultraviolet filter (Soflens, Bausch \& Lomb) was placed in the inferior fornix during soaking of the stroma with riboflavin for 10 minutes. The contact lens was applied on the corneal surface and the cornea was exposed to ultraviolet-A irradiation at fluence of 3.0 mW/cm2 for 30 minutes The uncorrected (UDVA) and best corrected (BDVA) visual acuity, and maximum (K max) keratometric values, were assessed before, and after 9 months CXL. Endothelial cell count was assessed before and 3 months after CXL. Anterior segment OCT was done 1 month after CXL to evaluate the presence and depth of the corneal stromal demarcation line.