Use Of Expansion Ring For Small Pupils During Routine Cataract Surgery

Eye Center Prague, Prague, Czech republic

Retrospective case- series reviewing. Best corrected distance visual acuity was recorded before and after the surgery. Patients were asked about concomitant medication, especially alfa 1 blockers. Measuring of pupil diameter at the beginning and at the end of the surgery was done by computer analysis. Total time of surgery was recorded. At the first postoperative check-up signs of intraocular inflammation, iris defects and intraocular pressure were monitored.

Total 42 eyes operated were included. In 18 eyes of 9 patients the ring was used during surgeries of both eyes, 11 eyes underwent planned surgery of just one eye and in 13 eyes the device was used in second operated eye based on first eye surgery experience. 32 men patients were using systemic alpha-1- antagonists. Average time of implantation of the ring was 1:53 minutes. Average explantation time of the ring was 32 seconds. There were 2 cases of posterior capsule rupture during surgery. Corrected distance visual acuity before surgery was 0.54 LogMar and 0,15 LogMar after the surgery. No inflammation signs and elevation of intraocular pressure were observed at the first check-up. I