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
Blunt injury to the eye often causes all, except: 
Select and explain. 
A. Choridal rupture, B. Iridodialysis, C. Avulsion of optic nerve, D. None
D: None
Answer: D: None 
Explanation: None