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 associated with angle recession is seen in \nSelect and explain. \nA. Concussion injury, B. Radiation injury, C. Penetrating injury, D. Chemical injury', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Concussion injury Angle recession involves rupture of face of ciliary body, the poion that lies between the iris root and the scleral spur. It is detected gonioscopically as widening of ciliary body band. It is seen in large number of blunt trauma Q patients but glaucoma Q develops in 6-9%.', 'role': 'assistant'}]