A member asked:

How does an ophthalmoscope work?

A doctor has provided 1 answer

Light: An ophthalmoscope sends a beam of light, properly focused, to the back of the eye illuminating those structures which can be viewed by your ophthalmolgist with a clever mirror arrangement. It depends upon the same light principal that causes 'red eye' in your pictures.

Answered 2/1/2013

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