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': 'Pathognomonic sign of Acute Iridocyclitis is – \nSelect and explain. \nA. Aqueous flare, B. Keratic precipitates, C. Small pupil, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Keratic precipitates (KPs) on posterior surface of cornea are pathognomonic of the involvement of ciliary body in the inflammation.\nEarliest sign of anterior uveitis → aqueous flare.\nPathognomonic sign → Keratic precipitate', 'role': 'assistant'}]