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': "Which of the following condition is associated with Iris pearls? \nSelect and explain. \nA. Sarcoidosis, B. Hansen's disease, C. Tuberculosis, D. Sympathetic ophthalmitis", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Iris pearls are pathognomonic for Hansen\'s disease. They represent small lepromata that have "worked their way through" the interstices of the iris to reach the iris surface. A pathognomonic sign of lepromatous leprosy is the presence at the pupillary margin of smal glistening \'iris pearls\' composed of bacilli within histiocytes which resemble a necklace', 'role': 'assistant'}]