Regional anaesthesia for ophthalmic surgery

Ophthalmic surgery can be conducted under local anaesthesia (LA), with techniques ranging from topical anaesthetic drops to sharp needle regional blocks. The sub-Tenon's block is the most common regional technique in current practice superseding sharp needle techniques (e.g. retrobulbar block). A sub-Tenon's block is a safe and effective means of providing analgesia, anaesthesia and good operating conditions.