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': 'Periphery of retina is best visualized with : \nSelect and explain. \nA. Direct ophthalmoscopy, B. Indirect ophthalmoscopy, C. Retinoscopy, D. USG', 'role': 'user'}, {'content': "Answer: B \nExplanation: Indirect ophthalmoscopy can be used to examine the entire retina, even out to its extreme periphery, the ora serrata. This is possible for two reasons. Optical distoions caused by looking through the peripheral lens and cornea interfere very little with the indirect ophthalmoscopic examination compared with the direct ophthalmoscope. In addition, the adjunct technique of scleral depression can be used. Ref : Chang D.F. (2011). Chapter 2. Ophthalmologic Examination. In P. Riordan-Eva, E.T. Cunningham, Jr. (Eds), Vaughan & Asbury's General Ophthalmology, 18e.", 'role': 'assistant'}]