Wet AMD is the more advanced and damaging form of Macular Degeneration. In this form of AMD, new, abnormal blood vessels grow beneath the retina and leak fluid and blood, causing permanent damage to retinal cells.

Wet AMD is further classified as one of two general forms — classic or occult. Classic wet AMD is characterized by well–delineated outlines created by blood vessel growth and scarring. This form usually results in more severe vision loss. In the occult form, blood vessel growth and leakage beneath the retina are less pronounced.

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