Age-related macular degeneration (AMD) is the leading cause of irreversible blindness among people 55 and older. As AMD progresses, tiny, fragile blood vessels begin to develop in the retina. These vessels often leak blood and fluids that can cause further damage. Some of the initial signs of macular degeneration may be blurred vision, straight lines appearing crooked, and dark or empty spaces in the central vision.

The macula is in the center of the retina and helps produce sharp vision for reading and seeing clearly. The density of the macular pigment is what protects the retina. Density checks are used to measure the health of the eyes.

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