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Some styles can accommodate prescription lenses. Several types of goggles are available because they are optimized for certain purposes, such as regular use, use in vehicles, or use with night vision goggles. Some fit over regular eyeglasses, some can accommodate prescription lenses, and others are designed for those who do not wear eyeglasses. [4]
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.
Racing helmets also have face shields (narrower than motorcycle helmets) to protect against fire and impact. Riot protection helmets have visors to protect the eyes and face from projectiles and impact. Safety helmets, also called hard hats, used by chainsaw operators and construction workers often have visors to protect the eyes from impact.
Swans was the official supplier of the World Para Swimming Championships from 2017 to 2019. [5]In 2021, the table tennis player Jun Mizutani wore indoor competition glasses during the Olympics, a first in this competition, with glasses that were custom-designed by Swans for the table tennis player.
Safety glasses provide eye protection against flying debris for construction workers or lab technicians; these glasses may have protection on the sides of the eyes as well as in the lenses. Some types of safety glasses are used to protect against visible and near-visible light or radiation. Glasses are worn for eye protection in some sports ...
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