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“The Effects of Blue Light Emanating From Digital Devices”

More and more information is coming out about the explosive growth in using digital devices (I-pads, I-phones, desk top computers) and their effect on vision..  I’ve discussed in previous blogs the effects of close-up work on vision.  A more subtle but very important factor is the blue light emanating from the devices and its effect on the eye.  I am enclosing an exerpt from an article from the American Optometric Association that discusses this.  It also discusses  the disruption of sleep pattern for those who use these devices before going to sleep.

Don’t stare into the sun—that’s a given. But what about digital devices? New AOA resources offer ODs vital insight into this trending topic.

“Evidence suggests that high-energy visible light from artificial sources may not be entirely harmless.”

High-energy visible (HEV) light—often referred to as ‘blue light,’ near the ultraviolet (UV) end of the visible spectrum—is not only found in sunlight, but also in the light sources people use every day. Blue light emitters such as digital devices, compact fluorescent bulbs and LEDs aren’t just common, they are fixations of our attention for hours on end.

According to the 2014 American Eye-Q® survey, 55 percent of respondents report using an electronic device for five hours or more daily. Add in the hours of TV people watch, and blue light exposure is at an all-time high.

Notably, research indicates all this blue light exposure could cause ocular harm, even possibly contributing to the development of age-related macular degeneration (AMD).

Recent advances in antireflection coating for glasses have been developed to help reduce this blue light into the eyes.

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