This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
[{'content': 'In acoustic neuroma, the earliest ocular finding is - \nSelect and explain. \nA. Diplopia, B. Ptosis, C. Loss of pupillary reflex, D. Loss of corneal reflex', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Earliest nerve involved by acoustic neuroma - Vth nerve/trigeminal nerve.\nThe earliest manifestation of Vth nerve involvement is decreased corneal sensitivity leading to loss of corneal reflex.', 'role': 'assistant'}]