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': "Cherry red spot is seen in the fundus of patients with all of the following conditions, EXCEPT: \nSelect and explain. \nA. CRAO, B. Tay Sach's disease, C. Niemman pick's disease, D. Central retinal vein occlusion", 'role': 'user'}, {'content': "Answer: D \nExplanation: Central retinal vein occlusion is characterized by diffuse retinal hemorrhages in all quadrants and dilated and touous retinal veins. There can be few scattered retinal hemorrhages with a few cotton wool spots to very extensive retinal hemorrhage throughout the fundus. Conditions with cherry red spots are: Central retinal aery occlusion Tay Sach's disease Niemann pick's disease Gaucher's disease Faber's disease Hurler's syndrome Ref: Ophthalmology edited by Myron Yanoff, page 590 , Atlas of Fundus Fluorescein Angiography By Pukhraj Rishi chapter 27.", 'role': 'assistant'}]