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': 'In central serous retinopathy – \nSelect and explain. \nA. Often shows focal leakage on fluorescein fundus photography, B. A macular hole is a common end result, C. The image perceived by the patient on the affected side in unilateral cases is bigger than on the normal side, D. A dense central scotoma is the most common presentation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Fluorescein angiography shows focal leakage of fluorescein in cenral serous retinopathy.\nImage of an object is perceived smaller than normal side, i.e., metamorphosia.\nCommon end result is spontaneous healing\nMost common presentation is sudden painless loss of vision.', 'role': 'assistant'}]