This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Glaucoma, Subject name: Ophthalmology
[{'content': 'Treatment of choice in acute congestive glaucoma- \nSelect and explain. \nA. Pilocarpine, B. Laser iridotomy, C. Timolol, D. Trabeculoplasty', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 245 Laser iridotomy is the definitive treatnent in acute congestive glaucoma . Gonioscopy should be performed as soon as cornea becomes clear. Laser PI should be performed if PAS are seen in <270degangle . Laser peripheral iridotomy re establishes communication between posterior and anterior chamber, so it bypasses the pupillary block and immediately relieves the crowding of the angle. Ref: Comprehensive Ophthalmology AK Khurana 6th edition chapter-10 page no:', 'role': 'assistant'}]