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': 'Muddy appearance of iris is seen in? \nSelect and explain. \nA. Glaucoma, B. Iridocyclitis, C. Persistent pupillary membrane, D. Iris cyst', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. (b) IridocyclitisRef. Parson's 22/e, p. 122, 236In anterior uveitis (Iridocyclitis) the pupil is constricted, its reactions are sluggish, and the delicate pattern of the iris, instead of being clear and sharphy defined, becomes blurred and indistinct ('muddy' iris)", 'role': 'assistant'}]