OBJECTIVES: To document the difference between complication rate in the early curve of practicing intracorneal stromal rings and after gaining experience. PATIENTS AND METHODS: A retrospective study of 623 eyes of 417 patients with keratoconus who underwent Keraring implantation using femtosecond laser for channel creation. RESULTS: The main outcome measures were reported intraoperative and postoperative complications. The overall complication rate ... إقراء المزيد