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
Iris bombe occurs is: 
Select and explain. 
A. Ring synechiae, B. Anterior synechiae, C. Posterior synechiae, D. All
A: Ring synechiae
Answer: A: Ring synechiae 
Explanation: Ans. Ring synechiae