This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Types of Errors of Refraction, Subject name: Ophthalmology
[{'content': 'Different refractive power between two eyes is known as? \nSelect and explain. \nA. Combined astigmatism, B. Aniseikonia, C. Anisometropia, D. Ametropia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) AnsiometropiaRef: A.K. Khurana 6th ed. 144-45, Khurana 4th ed./ 38* Isometropia: Two eye with equal refraction* Anisometropia: two eye with unequal refraction of power >2.5D* Aniseikoinia: Difference in size/shape of image of >5% on visual cortex by retina.', 'role': 'assistant'}]