Safety Eye Protection For Welding. During the welding operation the use of contact lenses is acceptable. Ensure that eye safety equipment for welders has filter lenses with a shade number that provides the appropriate level of protection.
You may need two pairs of approved safety glasses if your work requires eye protection--one with a clear lens and the other with dark lens. All quality welding helmets have lenses that provide 100 UV and IR protection regardless of shade level. Classifications of common protectors for welding operations are listed below.
The combined shade numbers of the lenses in the eyewear and helmet should equal the value shown in the tables below see 29 CFR 1915153a4 and ANSI Z4912005 Safety in Welding Cutting and Allied Processes.
Equipment must have filter lenses with a shade number that provides. The combined shade numbers of the lenses in the eyewear and helmet should equal the value shown in the tables below see 29 CFR 1915153a4 and ANSI Z4912005 Safety in Welding Cutting and Allied Processes. There is evidence suggesting that this will protect your eyes from dust and other debris far better than your helmet alone due to their closer proximity to your eyes. Each class is designed for a specific use.