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': 'Lisch nodules are seen in: March 2009 \nSelect and explain. \nA. Retinoblastoma, B. Neurofibromatosis, C. Retiniitis pigmentosa, D. Neuroblastoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B: Neurofibromatosis', 'role': 'assistant'}]