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': 'Which of the following disorders of eye is controlled using SAFE strategy? \nSelect and explain. \nA. Cataract, B. Trachoma, C. Glaucoma, D. Diabetic retinopathy', 'role': 'user'}, {'content': "Answer: B \nExplanation: In 1997, WHO developed a strategy known as 'SAFE' to control trachoma worldwide. S -- Surgery for trachomatous trichiasis A -- Antibiotics (Azithromycin/tetracycline) F -- Facial cleanliness E -- Environmental change Ref: Pg Ophthalmology: V. I and, Volume 2 By Zia Chaudhari, Pages 15-6.", 'role': 'assistant'}]