Endophthalmitis in microincision vitrectomy: outcomes of gas-filled eyes

PURPOSE To assess whether performing an air or gas exchange at the conclusion of a microincision vitrectomy procedure is beneficial regarding the rate of endophthalmitis. METHODS This was a collaborative, multicenter, retrospective chart review of 2,336 eyes that underwent microincision sutureless vitrectomy (23 or 25 gauge) with either SF6 or C3F8 gas endotamponade for macular hole between January 2008 and December 2009. For all eyes, the search methodology was structured to identify the main outcome measure, which was the occurrence of acute postoperative endophthalmitis (