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: Forensic Medicine
[{'content': 'Pin point pupils are seen in all except ? \nSelect and explain. \nA. Pontine hemorrhage, B. Organophosphorus poisoning, C. Opium poisoning, D. Barbiturate poisoning', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Barbiturate poisoning Pin point pupil can be caused by : Opioids (morphine), organophosphates, phenothiazines, clonidine, mushroom poisoning, chloral hydrate, carbolic acid and pontine hemorrhage.", 'role': 'assistant'}]