This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Uveal Tract, Subject name: Ophthalmology
[{'content': 'Iris pearls are seen in uveiitis due to - \nSelect and explain. \nA. Tuberculosis, B. Syphilis, C. Toxoplasma, D. Leprosy', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Leprosy * Lepromatous uveitis may occur as acute iritis (non-granulomatous) or chronic iritis (granulomatous).1) Acute iritis : It is caused by antigen-antibody deposition and is characterised by severe exudative reaction.2) Chronic granulomatous iritis : It occurs due to direct organismal invasion and is characterised by presence of small glistening'iris pearls' near the pupillary margin in a necklace form; small pearls enlarge and coalesce to form large pearls. Rarely, a nodular lepromata may be seen.", 'role': 'assistant'}]