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Sub-Tenon’s cannula may be similar to sharp retrobulbar needle for vitreoretinal surgery anesthesia
The use of a sub-Tenon’s cannula may be comparable to a sharp retrobulbar needle for local operative anesthesia before vitreoretinal surgeries, according to a study.The retrospective comparative study reviewed 1,711 vitreoretinal surgeries that received local anesthesia, in which 940 cases were performed with a blunt sub-Tenon’s cannula and 771 cases were performed with a sharp retrobulbar needle. In total, 99% of cases in each surgical group were completed.