This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anesthesia, Subject name: Pharmacology
[{'content': 'Choose the local anaesthetic that is specifically used to produce corneal anaesthesia for tonometry \nSelect and explain. \nA. Tetracaine, B. Ropivacaine, C. Oxethazaine, D. Benoxinate', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Benoxinate:- It is a good surface anaesthetic for the eye; has little irritancy. A 0.4% solution rapidly produces corneal anaesthesia sufficient for tonometry without causing mydriasis or corneal damage. Ref:- kd tripathi; pg num:-367', 'role': 'assistant'}]