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': 'Amster grid is used in: \nSelect and explain. \nA. Detecting maculopathy, B. Optic disc examination, C. Squint, D. Retinal examination', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Detecting maculopathy', 'role': 'assistant'}]