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': "Hard exudates are seen in all except: \nSelect and explain. \nA. Diabetic retinopathy, B. Retinitis pigmentosa, C. Eale's disease, D. Retinal aery macroaneurysm", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Retinitis pigmentosa', 'role': 'assistant'}]