Effect of Corneal Crosslinking With Riboflavin UV-A forTreatment of Post-Laser in Situ Keratomileusis Keratectasia

keratectasia is a sight-threatening complication that may occur after LASIK. The purpose of this study was to evaluate the effects corneal crosslinking with riboflavin and UVA for treatment of this complication. Twenty-three eyes of 12 patients in Non-Randomize Cohort study (referred to Navididegan Clinic) were selected for corneal crosslinking. Standard examinations like: UCVA-BCVA-slit lamp examination، topography were performed preoperatively and 1، 3، 6، 12 and 18 months after the procedure. The mean UCVA was 0. 54±0. 37 LogMAR preoperatively that changed to 0. 41±0. 33، 0. 42±o. 33 and 0. 5±0. 36 LogMAR in 6، 12 and18 months postoperation respectively (p=0. 011). Mean simk was 43. 49±3. 72 preoperatively and changed to 42. 68± 3. 75، 42. 62± 3. 8 and42. 78± 3. 84 in 6، 12 and 18 months postoperative respectively. Crosslinking seems to be a safe procedure for stabilizing the progression of ectasia with stabilizing and improvement of UCVA and k-readings.