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
[{'content': 'Topical sodium cromoglycate is useful in the treatment of which of the following conditions? \nSelect and explain. \nA. Trachoma, B. Anterior uveitis, C. Phlyctenular conjunctivitis, D. Vernal keratoconjunctivitis', 'role': 'user'}, {'content': "Answer: D \nExplanation: Vernal keratoconjunctivitis / spring catarrh is a recurrent, bilateral conjunctivitis occurring in young boys during summer. Clinical features: Burning, itching, lacrimation, photophobia, white ropy secretion. Palpebral from: Cobble stone papillae in upper palpebral conjunctiva Limbal form: Opacification, gelatinous thickening at limbus. Horner - trantas dots (consisting of eosinophils & epithelial debris) are characteristic. Treatment: Topical mast cell stabilizers like Disodium chromoglycate, Olapatidine, topical steroids, cold compress. Ref: Parsons' 21st / pg. 178.", 'role': 'assistant'}]