This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anaesthesia
[{'content': 'Best local anaesthetic for ophthalmic surgery is \nSelect and explain. \nA. Tetracaine, B. Prilocaine, C. Procaine, D. Bupivacaine', 'role': 'user'}, {'content': "Answer: D \nExplanation: The choice of local anaesthetic for ocular surgery variesBut lidocaine (2%) and bupivacaine (0.5-0.75%) are used most commonlyGenerally the use of 1:1 mixture of 2% lidocaine (Xylocaine) and 0.50% bupivacaine along with adrenaline and hyaluronidase in facial, retrobulbar and peribulbar blocks is common(Refer: stoelting's pharmacology and physiology in anaesthetic practice, 5th edition, pg no.294)", 'role': 'assistant'}]