Face shields
Face shields should be used for protection
Face shields should be used for protection when spraying, chipping, grinding, or woodworking. They should also be utilized when working with chemicals and blood hazards or when working in furnace operations, especially when pouring, casting or hot dipping, and welding. Face shields may be tinted or metal coated for heat and splatter protection. The curve of
the face shield will prevent particles or chemicals from coming from the side into the eyes. Safety glasses or goggles must be worn under a face shield.
Cutting goggles with appropriate filter lens numbers should be worn during acetylene welding, cutting, or burning molten metals. While arc welding and cutting, safety glasses with side shields and a welding hood with appropriate filter lens numbers should be worn. You can order prescription lenses that fit into the filter shade lenses.
The following lens numbers should be used for the appropriate welding tasks (with 14 being the darkest):
Torch soldering 1.5-3
Torch brazing/cutting 3-6
Gas welding 4-8
Electric arc welding 10-14
Use ANSI Z136 eye protection for laser light hazards (not ANSI Z87).
For welding tasks, a person should start with a shade that is too dark to see the weld zone. Then try a lighter shade which gives sufficient view of the weld zone without going below the minimum.
Prescription safety glasses can be designed with lenses for working with lasers. Laser safety glasses can be purchased which are designed to wear alone or over a pair of prescription glasses.