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: Ophthalmology
[{'content': 'Which laser is used in the management of after cataracts \nSelect and explain. \nA. Argon, B. Krypton, C. Nd - YAG, D. Excimer', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Nd-Yag Laser', 'role': 'assistant'}]