This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy, Subject name: Ophthalmology
Avascular structure of the eye is - 
Select and explain. 
A. Conjuctiva, B. Ciliary body, C. Cornea, D. Retina
C: Cornea
Answer: C: Cornea 
Explanation: Ans. is 'c' i.e. Cornea o Lens and cornea are avascular structures of eye, that's why fluorescein angiography can't be used to identify lesions.