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': 'Complicated cataract occurs at? \nSelect and explain. \nA. Posterior capsule, B. Anterior capsule, C. Posterior cortex, D. Anterior cortex', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. (c) Posterior cortexRef: Parson's 22/e, p. 268; American Academy of Ophthalmology p. 54Cataract secondary to intraocular diseases (Inflammatory and degenerative) is called complicated cataract.They occur due to posterior cortical atrophy.", 'role': 'assistant'}]