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
Complication of vernal kerato conjunctivitis: 
Select and explain. 
A. Cataract, B. Keratoconus, C. Retinal detachment, D. Vitreous hemorrhage
B: Keratoconus
Answer: B: Keratoconus 
Explanation: Ans. Keratoconus