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
Structure commonly involved in sympathetic ophthalmia: March 2007 
Select and explain. 
A. Cornea, B. Lens, C. Optic nerve, D. Iris and ciliary body
D: Iris and ciliary body
Answer: D: Iris and ciliary body 
Explanation: Ans. D: Iris & Ciliary body