NEW YORK, Feb. 12 (Xinhua) -- Reduced vision, also known as vision impairment, is so common that research showed nearly 30 percent of U.S. adults 71 and older have it, according to the latest official figures.
While many factors can contribute to it occurring, the leading cause of vision loss in older adults is age-related macular degeneration, said the U.S. Department of Health and Human Services Office of Disease Prevention and Health Promotion.
