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': 'Pathognomic sign of Acute Iriodocyclitis is - \nSelect and explain. \nA. Aquous 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. * Earliest sign of anterior uveitis- aqueous flare. * Pathognomonic sign -Keratic precipitate. Ref: Clinical ophthalmology 1st/e p.568.', 'role': 'assistant'}]