Other blue light filtering products utilize coatings that are applied to eyeglass lenses. ZEISS BlueGuard Lenses incorporate blue light blocking properties into the lens material. This allows ZEISS BlueGuard to be ordered with either a factory hardcoat, or with premium ZEISS DuraVision Platinum anti-reflective coating.
What is blue light and how do blue light blocking glasses work?
A portion of light emitted by the sun falls in the blue spectrum, but almost all modern digital devices and LED lights also emit blue light.Unlike UV radiation, blue light penetrates the eyes, and excessive exposure can cause perceived eyestrain and blurred vision. Blue light also influences the body’s circadian rhythms and your ability to produce melatonin, so blue light can have an effect on sleep.
Blue light blocking glasses can block that part of blue light spectrum that can potentially be harmful and irritating.
What is digital eyestrain?
Headaches, blurred vision, dry or burning eyes are all common symptoms of digital eye strain (DES) which can be caused by the prolonged use of digital devices. Tablets, smartphones, and computers emit a disproportionate amount of blue light which can lead to intraocular effects such as scatter and longitudinal chromatic aberration.
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