This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Conjuctiva, Subject name: Ophthalmology
[{'content': 'Herbert pits are seen in - \nSelect and explain. \nA. Trachoma, B. Phyctenular conjunctivitis, C. Acute iridocyclitis, D. Posterior uveitis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Trachoma Signs of Trachoma* Conjunctival signs Congestion, conjunctival follicles (boiled sagograin like), Papillary hyperplasia, conjunctival scarring (Arifs line), concretion.* Corneal signsSuperficial keratitis, Herbert follicles, Pannus, Corneal ulcer, Herbert pits, Corneal opacity.", 'role': 'assistant'}]