Dong Heun Nam, MD (Incheon, Korea), Hyun Seung Moon, MD (Incheon, Korea), Hae Jung Paik, MD, PhD (Incheon, Korea) PURPOSE: To compare the effect of volume used in sub-Tenon’s anesthesia on efficacy and intraocular pressure (IOP) in vitreoretinal surgery. METHODS: A prospective, clinical trial was conducted on patients undergoing sub-Tenon’s anesthetic for vitreoretinal surgery. Patients were randomized to either 3 mL, 5 mL or 7 mL...

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