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': 'Iris pearls are pathognomonic for \nSelect and explain. \nA. Syphilis, B. Sarcoidosis, C. Herpes simplex virus, D. Leprosy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Iris pearls are seen as glistening white beads at the pupillary margin. They are compared of bacilli within histiocytes and are pathognomonic for Lepromatous uveitis.', 'role': 'assistant'}]