It all starts with injecting a photosensitive drug into the arm. That then travels up to abnormal blood vessels in the eye. The drug is then activated by a cool laser light. The process destroys the abnomal vessels that cause macular degeneration. It does not damage the retina, explained U.T. Southwestern opthalmologist Albert Edwards.
Doctors say so far, the treatment has worked best on older adults with macular degeneration.
Patricia d'Happert is hoping it will help her see well enough to actually watch TV and resume the sewing projects she had to give up. It takes anywhere from a few days to a few months for patients to see results from photodynamic therapy. Some patients have to return for a second treatment. All Rights Reserved.