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
Pin point pupils are seen in: March 2010 
Select and explain. 
A. Opium poisoning, B. Acute alcohol poisoning, C. Barbiturate poisoning, D. Epileptic coma
A: Opium poisoning
Answer: A: Opium poisoning 
Explanation: Ans. A: Opium poisoning The triad of coma, pinpoint-immobile pupil and respiratory depression are diagnostic of opiate poisoning. Following conditions present with dilated pupils: Acute alcohol poisoning Barbiturates poisoning Epileptic coma Cerebral hemorrhage