Macular edema

Macular edema occurs when fluid and protein deposits collect in the eyeball on or under a part of the retina (the lining of the back of the eye) that is called the macula. This material causes the macula to thicken and swell, and it may distort a person's central vision.

The macula provides sharp, clear central vision that allows a person to see form, color, and detail that is directly in the line of sight.

Last Updated: April 7, 2009

Author: Jeannette Curtis

Medical Review: Caroline S. Rhoads, MD - Internal Medicine & Christopher J. Rudnisky, MD, FRCSC - Ophthalmology

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