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| Definition: |
Internal layer of the eye that receives and transmits focused images. The retina is normally red due to its rich blood supply. It can be seen with an ophthalmoscope, which allows the examiner to see through the pupil and lens to the retina. Changes in color of the retina or changes in the appearance of retinal blood vessels may indicate disease. Changes in color perception and in vision also indicate disease and indicate the need for a retinal examination.
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Review Date: 10/10/2001
Reviewed By: Victoria Kennedy, RN, A.D.A.M. editorial.
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