William Christen

Researcher, William Christen, an associate professor of medicine at Brigham and Women's Hospital in Boston, says that an estimated 1.75 million people have advanced age-related macular degeneration, and 7.3 million are in early stages of the disease.

"This is the first randomized trial to indicate a possible benefit of folic acid, B-6 and B-12 vitamin supplements in reducing the risks of age-related macular degeneration," he state.