This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Strabismus, Subject name: Ophthalmology
[{'content': 'The least physiological test for BSV \nSelect and explain. \nA. Worth four dot test, B. Bagolini striated glasses, C. Synoptophore, D. After image testing', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Bagolini striated glassesRef: Kanski 7/e, p. 751Most physiological and least dissociating test - Bagolini striated glasses testLeast physiological and most dissociating test - After image test', 'role': 'assistant'}]