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Blue-light blocking glasses have filters in their lenses that absorb blue light (and in some cases UV light), or stop it getting through. That means if you use these glasses when looking at a screen, especially after dark, they can help reduce exposure to blue light waves that can keep you awake. Some glasses (but not all) counteract the effects of blue light by tinting their user’s entire field of view yellow. This naturally accounts for sources of blue light (like screens), and renders them in softer tones. This is similar to the way that ski goggles tint their wearer’s field of vision orange to make up for the bright blue and white tones of the pistes.
Blue light is a potentially harmful form of light. While it is naturally emitted by the sun, electronic devices (upon which we’re spending more and more time every day) are also high-level producers. Blue light rays at a wavelength between 415nm - 455nm can damage your retinal cells, which may lead to premature eye ageing and vision problems in the future.
Our exposure to these harmful light rays may also cause a range of other health problems, including poor sleep (according to a 2012 Harvard Medical School study). Find out more about how to protect your eyes from blue light with anti blue light glasses with zFORT®.
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