Roughly 20 percent of patients with age - related macular degeneration suffer
from abnormal blood vessel growth and vascular leakage, says Campochiaro, and so may be helped by this new therapy, if it proves to work in clinical trials.
Conversly, the «wet» form of macular degeneration is characterized by the
growth of
abnormal blood vessels from the choroid underneath the macula which then go on to create «blind spots» in a patient's field of vision.