Definition Surgery involving the cornea, anterior chamber, and lens can be performed with a retrobulbar or peribulbar block. Retrobulbar Block Retrobulbar block involves depositing local anesthetic inside the muscle cone. It aims to block the ciliary nerves, the ciliary ganglion, and cranial nerves III, IV, and VI. The ciliary ganglion is a parasympathetic ganglion, which […]