Looking under a deep red light for 3 minutes each day may considerably improve decreasing vision, according to a research published in the Journals of Gerontology. The study also found that people over the age of 50 benefited the most from this treatment. The researchers say that these results need to be confirmed by other studies, but they may have important implications for preventing blindness. The study was conducted by Jennifer L. Eberhard, M.D., Ph. D., of the University of Michigan in Ann Arbor and colleagues. They used data from the Baltimore Longitudinal Study of Aging. The study included information on 2,623 adults between the ages of 38 and 93 when first interviewed in 1994. Each year after that, participants were asked to report how their eyes were doing and whether they had corrected visual acuity (clear vision) at least once per month while performing tasks such as reading letters or using instruments like cameras or microscopes. Otherwise, they were considered sighted. During follow-up interviews in 2004 and 2009, researchers asked participants about their eye health by asking questions about their ability to see colors, contrast on printed material, and darkness versus light when looking into a mirror.