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Lenses of various colors can offer sufficient (or insufficient) UV protection. Regarding blue light, the color gives at least a first indication: Blue blocking lenses are commonly yellow or brown, whereas blue or gray lenses cannot offer the necessary blue light protection. However, not every yellow or brown lens blocks sufficient blue light.
Prescription-havers aren't the only people who can shop this sale, though — depending on the frames you pick, you can even get non-prescription, sunglasses or blue light upgrades. What reviewers say
Lenses that filter blue light have been on the market for a long time in the form of brown-, orange-, and yellow-tinted sunglasses. [34] These tinted lenses were popular for the belief that they enhanced contrast and depth perception, but after early research showing the health risks of blue light exposure, [ 35 ] [ 36 ] became more popular for ...
Impact-resistant lenses were added in 1938. [8] The sunglasses were redesigned with a metal frame the following year and patented as the Ray-Ban Aviator. [6] According to the BBC, the glasses used "Kalichrome lenses designed to sharpen details and minimise haze by filtering out blue light, making them ideal for misty conditions." [6]
The frame on these sunglasses is pure gold with encrusted diamonds — but the real marvel is in the lenses, which are made of refined emeralds. For $200,000 you can see the world through these ...
Anaglyph 3D glasses have a different colored filter for each eye, typically red and blue or red and green. A polarized 3D system on the other hand uses polarized filters. Polarized 3D glasses allow for color 3D, while the red-blue lenses produce an image with distorted coloration. An active shutter 3D system uses electronic shutters.