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': 'Surgery used to treat posterior capsular Opacification is \nSelect and explain. \nA. Laser Posterior Capsulotomy, B. Extracapsular cataract Extraction, C. Phacoemulsification, D. Lensectomy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Posterior Capsular opacification is a complication of Cataract surgery.\nTreatment is Nd : YAG laser posterior capsulotomy.', 'role': 'assistant'}]