With the proliferation of digital media use, more and more is being written about the effects of excessive exposure to blue light on vision and sleep. “Blue light” is found in many places, with the largest source being sunlight. Other sources include lighting, flat screen LED televisions and computer monitors, smart phones and tablet screens. The blue end of the lighting spectrum has shorter wavelengths and more energy than the opposite end, or red light. Current concerns revolve around the long-term effects of blue light through screen exposure due to closeness to the screens and increased length of time spent looking at them. “Almost all blue light passes through the cornea and lens and reaches the retina,” explains Prevent Blindness. “This light may affect vision and could prematurely age the eyes,” resulting in an increase in digital eye strain and retina damage. Scientific studies of the impact to date are short-term, based on the newness of these devices. However, an article in Vision Monday, cites references to National Institutes of Health (NIH) research studies on the topic as well. Blue light, while environmentally friendly, can also throw off the body’s biological clock, result in sleep deprivation and can contribute to the development of serious health conditions, as explained in the Harvard Health Letter. For more information and advice about protecting your eyes from blue light: Blue Light and Your Eyes; Blue light, sleep and more; “”Weighing the Facts About Blue Light
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