Retina
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To establish the prevalence of anticoagulation (vitamin K antagonists) and antiplatelet agent therapy in patients undergoing vitreoretinal surgery and to compare the outcome of peribulbar anesthesia and vitreoretinal surgery between users and nonusers. ⋯ Peribulbar anesthesia for vitreoretinal surgery can probably be performed safely in patients receiving anticoagulants. However, retinal surgeons should be aware that severe bleeding complications are more frequent in patients receiving antiplatelet therapy.