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': 'In siderosis bulbi the electrolytically dissociated iron ions: \nSelect and explain. \nA. Are deposited under the membranous structures of the eye, B. Combine with intraocular proteins and produce degenerative changes, C. Produce local irritative reaction at the site where deposited, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Combine with intraocular proteins and produce degenerative changes', 'role': 'assistant'}]