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Red eye reflex

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Big_Poppa DDS

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What is the red eye reflex all about? My friends are doing a general practice residency for dentistry and have to learn how to give complete physicals. One of the exams is the red eye reflex, I actually saw it but what does it mean?
 

r_salis

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From what I understand, it's a simple procedure done to test for presence of tumors, cataracts and other deformities within the eye. A light shined into a healthy eye should reflect off of the retina in the back of the eye and give off a red reflection (thus the "red" in "red eye reflex"--also the same effect seen in red eye photographs). If there is anything abnormal within the vitreous of the eye, the light will reflect off of that instead, giving off a white reflection.
 
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