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Various protective spectacles and glasses have been devised. The illustrated metal eye protector is valuable for military purposes, especially for ski troops, and has been adopted by the Russian government. It is made of stainless steel or cold roll and is a protection from sun, wind, sand and projectiles.
The protector consists of metal eyecups with cross stenopeic slits held together by a cross bar, which can be adjusted to regulate the
Metal eye protector. interpupillary distance. The periphery of the cups is surrounded by soft rubber, which fits closely around the eyes. An elastic headband holds the device in place.
The advantages are as follows :
The protector is indestructible and light, weighing less than 5 ounces (150 Gm.).
Available daylight is 16 per cent; therefore, the protector can be used for glaring sun or blinding snow and yet give the necessary visibility.
It will not fog or steam as
Town AE. METAL EYE PROTECTOR. Arch Ophthalmol. 1943;29(4):633. doi:10.1001/archopht.1943.00880160123009
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