This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Retina, Subject name: Ophthalmology
[{'content': 'A 33-year-old woman presents with a 3-day history of seeing "spots" floating around in her eye. Today, she notes streaks of light in the same eye accompanied by a "shadow" in her peripheral vision that moves when looking up and down. Her medical history is significant for migraine headaches; however, she has never had such visual symptoms with her headaches. What is the most likely diagnosis? \nSelect and explain. \nA. Ophthalmic migraine, B. Malingering, C. Retinal detachment, D. Amaurosis fugax', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Retinal detachment: The history suggests retinal detachment. the vitreous detach from the retina and causes the perception of "floaters" Vitreous detaching from the retina may cause a peripheral "horseshoe" tear in susceptible areas of the retina. The tear allows fluid within the vitreous to accumulate under the retina and cause a detachment. When the retina is paially detached and the eye moves, the patient may notice a "shadow" that corresponds to the torn retina. Retinal detachment is ophthalmic emergency because the detachment can progress to the fovea and threaten central vision. Opthalmic migraine: an eye condition that causes brief attacks of blindness or visual problems like flashing lights in 1 eye. Amaurosis fugax: Condition in which a person cannot see from one or both eyes due to transient failure of blood supply to retina.', 'role': 'assistant'}]