This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lens, Subject name: Ophthalmology
[{'content': 'Posterior capsulotomy after cataract is done using \nSelect and explain. \nA. Argon Laser, B. Nd YAg, C. Holmium, D. Diode laser', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (Refer: AK Khurana Comprehensive Ophthalmology, 6th edition, pg no. 214 - 215)After cataract, if thin, can be cleared centrally by Nd: YAG laser capsulotomy. Dissection with cystitome or Zeigler&;s knife also be used. Thick membranous after cataract needs surgical membranectomy.', 'role': 'assistant'}]