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
All of the following conditions exhibit cherry red spot on retina, EXCEPT: 
Select and explain. 
A. CRAO, B. Tay Sach's disease, C. Niemann pick's disease, D. Central retinal vein occlusion
D: Central retinal vein occlusion
Answer: D: Central retinal vein occlusion 
Explanation: Conditions diseases displaying a cherry-red macular spot: Central retinal aery occlusion Commotio retinae (Berlin's edema) GM1 gangliosidosis GM2 gangliosidosis (Tay-Sachs and Sandhoff type) Sialidosis Niemann-Pick disease types A to D (not E and F); ring may be diffuse and indistinct Farber lipogranulomatosis Metachromatic leukodystrophy Neuronal ceroid lipofuscinosis, late infantile form ("bull's-eye" maculopathy, not true cherry-red spot) Ref: Ropper A.H., Samuels M.A. (2009). Chapter 37. Inherited Metabolic Diseases of the Nervous System. In A.H. Ropper, M.A. Samuels (Eds), Adams and Victor's Principles of Neurology, 9e.