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': 'Initial manoeuver done in congenital dacryocystitis: September 2007 \nSelect and explain. \nA. Probing, B. Massaging, C. Ointments, D. Observation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B: Massaging Congenital nasolacrimal duct obstructions spontaneously resolve in 90% of cases during the first year of life. Massage with digital pressure is considered as an aid in speeding up this natural resolution. Other than massage, topical antibiotics are useful for mucopurulent discharge, but the only treatment of efficacy for those patients who do not resolve spontaneously is surgery.', 'role': 'assistant'}]