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: Anaesthesia
[{'content': 'Type of laser used for iridotomy ? \nSelect and explain. \nA. Excimer, B. Krypton red, C. Nd:YAG, D. Diode', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Nd:YAG", 'role': 'assistant'}]