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': 'Most common complication of extracapsular cataract surgery is - \nSelect and explain. \nA. Retinal detachment, B. Opacificatiton of posterior capsule, C. Vitreous haemorrhage, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In extracapsular cataract extraction (ECCE), major poion of anterior capsule with epithelium, nucleus and coex are removed; leaving behind intact posterior capsule. So, opacificatiton of posterior capsule is the most common complication of extracapsular cataract surgery. Corneal complications and iritis/other inflammation are common post-operative complications.', 'role': 'assistant'}]