The wet form of age-related macular degeneration (AMD) develops when leaky
blood vessels grow across the central portion of the retina and cause scarring,
leading to vision loss.
An advisory panel to the FDA is recommending approval for the
light-sensitive drug Visudyne, which, when used in conjunction with laser
surgery, destroys the abnormal vessels while preserving healthy ones.
The benefit of the drug is modest but effective in preventing loss of
vision in some patients.