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
[{'content': 'Egyptian opthalmia is- \nSelect and explain. \nA. Spring Catarrh, B. Trachoma, C. Intersitial keratitis, D. xerophthalmia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Trachoma (previously known as Egyptian ophthalmia) is a chronic keratoconjunctivitis, primarily affecting the superficial epithelium of conjunctiva and cornea simultaneously. It is characterised by a mixed follicular and papillary response of conjunctival tissue It is still one of the leading causes of preventable blindness in the world.b The word &;trachoma&; comes from the Greek word for &;rough&; which describes the surface appearance of the conjunctiva in chronic trachoma. Ref: A K KHURANA COMPREHENSIVE OPHTALMOLOGY,E4,page-62', 'role': 'assistant'}]