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2. These Stylish, Doctor-Approved Reading Glasses Can Help ... - AOL

   www.aol.com/best-doctor-approved-reading-glasses...

   These blue-light-blocking readers from Peepers—a brand that Oprah previously touted in her annual Favorite Things list—refuse to blend into the background, but they aren’t too loud to wear ...

3. 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.

4. 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.

5. Blue light spectrum - Wikipedia

   en.wikipedia.org/wiki/Blue_light_spectrum

   The blue light spectrum is an essential part of the visible spectrum with wavelengths of about 400-480 nm. [1] Blue light is primarily generated by Light-Emitting Diodes (LED) lighting and digital screens, it has now become prevalent in the world around us. [2] LED lighting creates white light by combining blue light with other wavelengths ...

6. Barrier troops - Wikipedia

   en.wikipedia.org/wiki/Barrier_troops

   Barrier troops, blocking units, or anti-retreat forces are military units that are located in the rear or on the front line (behind the main forces) to maintain military discipline, prevent the flight of servicemen from the battlefield, capture spies, saboteurs and deserters, and return troops who flee from the battlefield or lag behind their units.

7. Why J Balvin Invited Will Smith to Join His Coachella Set: 'A ...

   www.aol.com/why-j-balvin-invited-smith-165000668...

   J Balvin feels a special connection to Will Smith. In a new Rolling Stone interview published on Tuesday, Aug. 13, the "Mi Gente" singer, 39, revealed why he was so eager to include Smith, 55, in ...