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': 'The laser procedure, most often used for treating iris neovascularization is – \nSelect and explain. \nA. Goniophotocoagulation, B. Laser trabeculoplasty, C. Panretinal photocoagulation (PRP), D. Laser iridoplasty', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Treatment of choice for rubeosis iridis is panretinal photocogulation.', 'role': 'assistant'}]