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2. Pit Viper (sunglasses) - Wikipedia

   en.wikipedia.org/wiki/Pit_Viper_(sunglasses)

   Pit Viper is an American company based in South Salt Lake, Utah. The company designs, develops and manufactures sports performance equipment and lifestyle pieces including sunglasses , safety glasses, eyeglasses , sports visors, ski/snowboard goggles utilizing a 1980s, 1990s and early 2000s aesthetic combined with an irreverent, absurdist ...

3. How Did Pit Viper Become the New Must-Have Cycling ... - AOL

   www.aol.com/lifestyle/did-pit-viper-become-must...

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4. Ballistic eyewear - Wikipedia

   en.wikipedia.org/wiki/Ballistic_eyewear

   Ballistic sunglasses or prescription eyeglasses must meet the same requirements. In brief, the U.S. military standard requires that ballistic eyewear must be able to withstand up to a 3.8 mm (.15 caliber) projectile at 195 m/s (640 ft/s)) for spectacles and 5.6 mm (.22 caliber) projectile at 168–171 m/s (550–560 ft/s) for goggles.

5. Shooting glasses - Wikipedia

   en.wikipedia.org/wiki/Shooting_glasses

   In contrast to most other eye glasses, shooting glasses usually only have one lens that corrects the ametropia of the dominant eye, which is used for aiming.This lens is selected in such a way that the maximum visual acuity lies on the font sight line element near the muzzle of the (non-magnifying) open type or diopter and globe type match sight line elements to get three points positioned in ...

6. GI glasses - Wikipedia

   en.wikipedia.org/wiki/GI_glasses

   GI glasses are eyeglasses issued by the American military to its service members. Dysphemisms for them include the most common " birth control glasses " ( BCGs ) and other variants. At one time, they were officially designated as regulation prescription glasses ( RPGs ).

7. Pinhole glasses - Wikipedia

   en.wikipedia.org/wiki/Pinhole_glasses

   Pinhole glasses, also known as stenopeic glasses, are eyeglasses with a series of pinhole-sized perforations filling an opaque sheet of plastic in place of each lens. Similar to the workings of a pinhole camera , each perforation allows only a very narrow beam of light to enter the eye which reduces the size of the circle of confusion on the ...