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
Iris pearl are seen in - 
Select and explain. 
A. Leprosy, B. Tuberculosis, C. Sarcoidosis, D. Cat Scratch disease
A: Leprosy
Answer: A: Leprosy 
Explanation: Lepromatous uveitis may occur as acute iritis (non-granulomatous) or chronic iritis (granulomatous). Acute iritis : caused by antigen-antibody deposition and is characterised by severe exudative reaction. 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 pearles enlarge and coelesce to form large pearles. Ref:A K Khurana 6th edition pg:164