This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Errors of Refraction, Subject name: Ophthalmology
[{'content': 'The term anisometropia indicates: \nSelect and explain. \nA. Refractive error, B. Long vision, C. Short vision, D. Aging process', 'role': 'user'}, {'content': 'Answer: A \nExplanation: a) refractive error ref optha Nema 4th/e p.30, Khurana 3rd/e and 2nd /e p.62, parsons 19th/e p.88', 'role': 'assistant'}]