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2. Polarized and UV-protected sunglasses under $60

   www.aol.com/news/polarized-uv-protected...

   We spoke to two optometrists and the vice president of membership at The Vision Council to identify a handful of great polarized, UV-protected sunglasses for a reasonable price.

3. Sunglasses - Wikipedia

   en.wikipedia.org/wiki/Sunglasses

   Aviator sunglasses feature oversize teardrop-shaped lenses and a thin metal frame with double or triple bridges. A Bengali man sporting aviator sunglasses. The design was introduced in 1936 by Bausch & Lomb for issue to U.S. military aviators. As a fashion statement, aviator sunglasses are often made in mirrored, colored, and wrap-around styles.

4. Photochromism - Wikipedia

   en.wikipedia.org/wiki/Photochromism

   Hackmanite before (top) and after (bottom) exposure to UV. Tenebrescence, also known as reversible photochromism, is the ability of minerals to change color when exposed to light. The effect can be repeated indefinitely, but is destroyed by heating. [10] Tenebrescent minerals include hackmanite, spodumene and tugtupite.

5. 10 Most Expensive Sunglasses in the World and What They Cost

   www.aol.com/10-most-expensive-sunglasses-world...

   Here are the 10 most expensive sunglasses in the world and what they cost. ... "But when you're shopping for sunglasses look for high quality, good UV protection, frames that compliment your face ...

6. Eye protection - Wikipedia

   en.wikipedia.org/wiki/Eye_protection

   There are many different types of eye protection against light suited for different applications. The most common forms of eye protection against light are sunglasses. These primarily protect against UV light from the sun and help increase visibility in bright conditions. They often tend to be fashionable as well as practical.

7. District Vision - Wikipedia

   en.wikipedia.org/wiki/District_Vision

   [12] [13] They come in 4 lens variations; Sky G15 (full UV protection), Sports Yellow (for visibility in low light), Water Gray (polarized lenses to minimize glare from water) and Black Rose (changing light conditions). [14] [9] All frames are made out of nylon and titanium weighing 22 grams. [11]