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This European Standard defines and explains the principal terms used in field of personal eye-protection in the following (draft) ENs: EN 166, Personal eye-protection-- Specifications. EN 167, Personal eye-protection-- Optical methods. EN 168, Personal eye-protection-- Non-optical test methods. EN 169, Personal eye-protection-- Filters for welding and related techniques-- Transmittance requirements and recommended use. EN 170, Personal eye-protection-- Ultraviolet filters-- Transmittance requirements and recommended use. EN 171, Personal eye-protection-- Infrared filters-- Transmittance requirements and recommended use. En 172, Personal eye-protection-- Sunglare filters for industrial use. EN 173, Personal eye-protection-- Visors for motorcykles helmets. En 174, Personal eye-protection-- Ski goggles for downhill skiing. EN 175, Personal eye-protection-- Equipment for eye and face protection during welding and allied processes. EN 207, Personal eye-protection-- Filters and eye-protectors against laser radiation (laser eye-protectors). EN 208, Personal eye-protection-- Eye-protectors for adjustment work on lasers and laser systems (laser adjustment eye-protectors). EN 379, Personal eye-protection-- Automatic welding filters. EN 1731, Mesh type and face protectors for industrial and non-industrial use against mechanical hazards and/or heat. EN 1836, Personal eye-protection-- Sunglasses and sunglare filters for general use. EN 1928, Personal eye-protection-- Goggles for motorcycle and moped users. EN 12253, Screens for laser working places-- protectors for snowmobile users. CR 13464, Guide to selection, use and maintenance of occupational eye and face protectors. EN 14458, Personal eye-equipment-- Faceshields and visors for use with firefighters, and high performance industrial safety helmets used by firefighters, ambulance and emergeny services. The table A.1 gives the spectral distribution of solar radiation energy in the infrared spectrum.