This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea and sclera, Subject name: Ophthalmology
Avascular coat in eye is - 
Select and explain. 
A. Sclera, B. Cornea, C. Retina, D. Choroid
B: Cornea
Answer: B: Cornea 
Explanation: Cornea is a transparent,avascular,watch glass like structure.It forms anterior one sixth of the outer fibrous coat of eyeball. Reference:Comprehensive Opthalmology,AK Khurana,6th edition,pg no.95