- May 18, 2009
(CNN) — The blue light in LED lighting that is increasingly used in our homes can damage the eye's retina while disturbing our biological and sleep rhythms, a French health authority warned in a new report.
New scientific evidence confirms the "phototoxic effects" of short-term exposures to high-intensity blue light, as well as an increased risk of age-related macular degeneration after chronic exposure to lower-intensity sources, according to the French Agency for Food, Environmental and Occupational Health & Safety, known as ANSES. Age-related macular degeneration, a leading cause of vision loss among people over 50, causes damage to the macula, a small spot near the center of the retina that's needed for sharp central vision.
Yet protection from the harmful effects to the retina offered by "anti-blue light" screens, filters and sunglasses varies, and their ability to preserve sleep rhythms is not proven, ANSES also said.