This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Conjunctiva, Subject name: Ophthalmology
Complication of vernal kerato conjunctivitis- 
Select and explain. 
A. Cataract, B. Keratoconus, C. Retinal detachment, D. Vitreous hemorrhage
B: Keratoconus
Answer: B: Keratoconus 
Explanation: VERNAL KERATOCONJUNCTIVITIS (VKC) OR SPRING CATARRH : It is a recurrent, bilateral, interstitial, self-limiting, allergic inflammation of the conjunctiva having a periodic seasonal incidence. Vernal corneal plaques result due to coating of bare areas of epithelial macroerosions with a layer of altered exudates ref: A K KHURANA OPHTALMOLOGY,E4, Page-74,75