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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.
Jean-Marie-Théodore Fieuzal (1836-1888) was the first to argue for UV protection with (yellow) shaded glasses, and by 1899, Rodenstock GmbH produced possibly the first sunglasses intended for shielding eyes from UV light and not just glare. [16]
Sunglasses provide more comfort and protection against bright light and often against ultraviolet (UV) light. To properly protect the eyes from the dangers of UV light, sunglasses should have UV-400 blocker to provide good coverage against the entire light spectrum that poses a danger. [7]
Photokeratitis can be prevented by using sunglasses or eye protection that transmits 5–10% of visible light and absorbs almost all UV rays. Additionally, these glasses should have large lenses and side shields to avoid incidental light exposure. Sunglasses should always be worn, even when the sky is overcast, as UV rays can pass through ...
Once inside, away from the triggering UV light, the cold lenses take longer to regain their transparency than warm lenses. A number of sunglass manufacturers and suppliers including INVU, BIkershades, Tifosi, Intercast, Oakley, ZEISS, Serengeti Eyewear, and Persol provide tinted lenses that use photochromism to go from a dark to a darker state ...
Eye protection is protective gear for the eyes, and sometimes face, designed to reduce the risk of injury. Examples of risks requiring eye protection can include: impact from particles or debris , light or radiation , wind blast , heat , sea spray or impact from some type of ball or puck used in sports.
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