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': 'Regarding amblyopia which of following is true: \nSelect and explain. \nA. Reversible loss of vision, B. Associated with squint, C. Defect in refractive error, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A. i.e. Reversible loss of vision; B. i.e Associated with squint; C. Defect in refractory error', 'role': 'assistant'}]