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': 'The periphery of retina is visualized with: \nSelect and explain. \nA. Indirect binocular ophthalmoscopy, B. Direct opthalmoscopy, C. Contact lens, D. All', 'role': 'user'}, {'content': "Answer: A \nExplanation: A i.e. Indirect opthalmoscopy Peripheral retina is visualized by indirect opthalmoscopy Q and biomicroscopy examination by Goldmann's three mirror contact lens. Q", 'role': 'assistant'}]