THE MERCK MANUAL: The Merck Manual of Diagnosis and Therapymultimedia


  • Age-Related Macular Degeneration (AMD or ARMD)
  • Age-Related Macular Degeneration (Wet)

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    Age-Related Macular Degeneration (Wet)

    Proliferation of blood vessels under the macula are characteristic of wet (also called exudative or neovascular) age-related macular degeneration (AMD). Changes in the appearance of the center of the macula as well as macular elevation seen in this image are caused by hemorrhage, fluid accumulation, or both. In this image, the fovea (the more uniformly red area in the center) is so red because a small amount of blood is under the retina. The yellow spots are drusen, characteristic of the preexisting dry AMD.

    Image courtesy of Robert Machemer via the Online Journal of Ophthalmology (