This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Conjunctiva, Subject name: Ophthalmology
[{'content': "Maxwell Lyon's sign is a feature of: \nSelect and explain. \nA. Trachoma, B. Spring catarrh, C. Epidemic keratoconjunctivitis, D. Acanthamoeba keratitis", 'role': 'user'}, {'content': 'Answer: B \nExplanation: A/K/A warm weather ketratoconjuctivitis /Vernal ketratoconjuctivitis more common in young boys spontaneously resolves at age of pubey type of type 1 HSN (IgE mediated )type 1>type 4. features - cobblestone appearance (hall mark)(large papillae) Maxewell lyon sign - coagulated coppy dishrage forming psudomembrane seen on the eversion of the eyelid. Horner tranta spots DOC-sodium cromoglycolate (Mast cell stabliser)', 'role': 'assistant'}]