Intraocular pressure after retrobulbar and peribulbar anesthesia

This study included 80 eyes planned for cataract extraction with or without lens implantation. They were classified into 4 groups [A, A1, B, and B1], each included 20 eyes. Groups A and A1 received retrobulbar anesthesia, while groups B and B1 received peribulbar anesthesia. In groups A and B the Honan balloon was applied for ten minutes after the injection of the anesthetic solution. The intraocular pressure was measured before, immediately after and 10 minutes after injection of the anesthesia. It was found that both techniques lead to elevation of the intraocular pressure which is more significant in case of peribulbar anesthesia. The application of the Honan balloon leads to significant lowering of intraocular pressure