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': 'Secondary glaucoma following corneal perforation is due to: \nSelect and explain. \nA. Central anterior synechiae formation, B. Peripheral anterior synechiae, C. Intraocular haemorrhage, D. Angle recession', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Peripheral anterior synechiae', 'role': 'assistant'}]