Abstract

Introduction: This report describes the extrusion of an intrastromal corneal ring segment into the anterior chamber, which is more frequent intraoperatively. The reported case consists in one segment extrusion into the anterior chamber 13 years after the placement of intrastromal corneal ring segment in a patient with keratoconus. Case Report: A 49-year-old male patient, diagnosed with keratoconus in both eyes, underwent surgery for Ferrara intrastromal corneal ring segment in both eyes 13 years ago. He referred blurred vision of three-month of evolution. Intrastromal corneal ring segments were seen very close to the endothelium in both eyes and in the left eye partial extrusion of the temporal segment into the anterior chamber. The anterior chamber dislocation was managed electively in the operating room: with topical anesthesia and sedation it was decided to remove the segment from paracenteses that were performed near to the extruded segment and extraction of the segment with retinal forceps. Conclusion: Follow-up of operated patients with intrastromal corneal ring segments is important to control the depth of implantation since extrusion of the segment to the anterior chamber may occur even many years later, as in this case.