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2. Biological effects of high-energy visible light - Wikipedia

   en.wikipedia.org/wiki/Biological_effects_of_high...

   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 the ...

3. Sunglasses - Wikipedia

   en.wikipedia.org/wiki/Sunglasses

   Hunter S. Thompson was known for wearing yellow-tinted driving glasses. When driving a vehicle, particularly at high speed, dazzling glare caused by a low Sun, or by lights reflecting off snow, puddles, other vehicles, or even the front of the vehicle, can be lethal. Sunglasses can protect against glare when driving.

4. Color blind glasses - Wikipedia

   en.wikipedia.org/wiki/Color_blind_glasses

   Glasses with a notch filter (e.g. EnChroma glasses) filter a narrow band of light around 590 nm that excites both the L- and M-cones (yellow-green wavelengths). [12] They are often combined with an additional stopband in the short wavelength (blue) region to minimize the tint on the lenses and approximate a neutral-density filter. They improve ...

5. Wait, So Do Blue Light Glasses Actually Work? Here's What ...

   www.aol.com/wait-blue-light-glasses-actually...

   Ultimately, Dr. Kelley says the function of blue light glasses depends on the tint. For instance, amber or reddish-tinted ones may improve sleep-wake cycles better than clear ones.

6. The Strawberry Squid: A Deep Ocean Dweller with a Unique ...

   www.aol.com/strawberry-squid-deep-ocean-dweller...

   Yellow-tinted lenses help athletes see better by filtering out certain wavelengths of light. Just like the squid’s yellow eye searching for a silhouette above, yellow-tinted glasses help ...

7. Glass coloring and color marking - Wikipedia

   en.wikipedia.org/wiki/Glass_coloring_and_color...

   In borosilicate glasses rich in boron, sulfur imparts a blue color. With calcium it yields a deep yellow color. [4] Manganese can be added in small amounts to remove the green tint given by iron, or in higher concentrations to give glass an amethyst color. Manganese is one of the oldest glass additives, and purple manganese glass was used since ...