Auto-darkening Welding Glasses, Up to DlN 16 UV/lR Protection Welding Safety Goggle (Free-size) Welding goggles offer a degree of eye protection while some forms of welding and cutting are being done. Welding Safety Goggles are intended to protect the eyes from the heat and optical radiation produced by the welding, such as the intense ultraviolet light produced by an electric arc, sparks or wreckage.