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

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

    Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.

  3. Protect Your Scalp and Hair From UV Damage With These Hair ...

    www.aol.com/protect-scalp-hair-uv-damage...

    You should be using a hair sunscreen to protect your scalp and hair from damage due to UV rays. We tested and reviewed 9 products, and consulted experts, here.

  4. Do blue-light-blocking glasses work? Here's what experts say.

    www.aol.com/news/blue-light-blocking-glasses...

    Blue-light-blocking glasses are said to help reduce eye strain and headaches — are they for you?

  5. Do blue-light-blocking glasses work? This study suggests no - AOL

    www.aol.com/blue-light-blocking-glasses-study...

    Blue-light-blocking glasses claim to reduce eye strain from devices, but scientists say there are better ways to reduce the strain on eyes.

  6. Electromagnetic radiation and health - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_radiation...

    The UV-B flux is 2–4 times greater during the middle 4–6 hours of the day, and is not significantly absorbed by cloud cover or up to a meter of water. [47] Ultraviolet light, specifically UV-B, has been shown to cause cataracts and there is some evidence that sunglasses worn at an early age can slow its development in later life. [18]

  7. Ultraviolet index - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet_index

    A UV index reading of 8 to 10 means very high risk of harm from unprotected sun exposure. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. Minimize sun exposure between 10 a.m. and 4 p.m. If outdoors, seek shade and wear sun-protective clothing, a wide-brimmed hat, and UV-blocking sunglasses.