VISUDYNE, also known by its generic name verteporfin, is a medication used in photodynamic therapy primarily for the treatment of age-related macular degeneration (AMD), particularly the wet form of the disease. It works by being administered intravenously and then activated by a specific wavelength of light directed into the eye, which triggers the drug to produce a form of oxygen that destroys abnormal blood vessels beneath the retina. This process helps to slow the progression of vision loss associated with the condition. VISUDYNE therapy is notable for its targeted approach, aiming to minimize damage to healthy tissues while addressing the problematic areas in the eye. It may also be used for other conditions as determined by a healthcare provider.