Glasses against heat rays
For special works, in view of the fact that the possibility of developing cataracts under the influence of red rays has now been confirmed by Vogt's experiments on animals, special "Wärmschutzbrille" glasses were designed (Lincke, Deut. Opht. Woch., 1925, No. 2) heat rays and completely blocking rays of 700-1500 mm.
Adamyuk V.
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