LAUSR

PURPOSE To determine the unplanned return to OR rate within 180 days and at any time postoperatively after valved and non-valved tube shunt surgery DESIGN: : Retrospective case-control study METHODS: : Review of 357 eyes that underwent tube shunt surgery (151 valved, 206 non-valved) at an academic glaucoma service between 01/2014-12/2016. A control eye was time-matched for each eye that underwent reoperation. RESULTS The reoperation rate within 180 days was 10.6% (16/151) for valved and 12.1% (25/206) for non-valved tube shunts and at any time postoperatively was 20.5% (31/151) for valved and 22.8% (47/206) for non-valved tube shunts. Mean postoperative follow-up was 2.8±1.1 years. The most common reoperations within 180 days and at any time postoperatively after valved tube shunt surgery were tube revision (43.8% within 180 days, 38.7% anytime) and external CPC (31.3% within 180 days, 38.7% anytime). The most common reoperations within 180 days after non-valved tube shunt surgery were tube revision (32.0%), external CPC (12.0%), and vitrectomy with AC washout (12.0%) and at any time postoperatively were tube revision (34.0%), external CPC (31.9%), and tube explant (12.8%). At last follow-up, eyes that returned to the OR and controls were similar in terms of mean IOP, proportion of eyes meeting target IOP, and change in VA. CONCLUSIONS Over 20% of eyes undergoing tube shunt surgery returned to the OR at any time postoperatively with a mean follow-up of nearly 3 years, with over 10% of eyes undergoing reoperation within the first 180 days. Rates of reoperation were similar between valved and non-valved tube shunts.