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': 'In a patient with iridocyclitis, which of the following type of synechiae result in iris bombe formation? \nSelect and explain. \nA. Segmental synechiae, B. Total synechiae, C. Ring synechiae, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ring (annular) posterior synechiae result in a 360 degree adhesion of pupillary margin to the anterior capsule of lens. Due to this, aqueous humor collects behind the iris and pushes it forwards resulting in iris bombe formation. Ref: Ophthalmology By A K Khurana, 4e page 143.', 'role': 'assistant'}]