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
Treatment of primary angle closure glaucoma is 
Select and explain. 
A. Trabeculectomy, B. Pilocarpine, C. Timolol, D. Iridectomy
D: Iridectomy
Answer: D: Iridectomy 
Explanation: D i.e. Iridectomy