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
Cherry red spot after trauma is seen in children due to: 
Select and explain. 
A. CRAO, B. CRVO, C. Berlin's edema, D. Niemann-Pick's disease
C: Berlin's edema
Answer: C: Berlin's edema 
Explanation: Ans: C. Berlin's edema(Ref Kanski 7/e p882: Parson's 22/e p392, 21/e p382, 20/e p367; Yanoff and Duker 4/e p671)Cherry red spot after trauma in children due to Berlin's edema.Commotio retinae (Berlin's Edema):Common occurrence following a eye blow.Manifests as milky white cloudiness involving posterior pole with a 'cherry-red spot' in foveal region.Appear after some days or may be followed by pigmentary changes.Most frequently affect temporal fundus.