Light from arc welding can cause severe burns to the eyes or blindness.

Arc welding indeed produces intense light that includes ultraviolet (UV) radiation, which can be harmful to the eyes. This phenomenon is often referred to as "arc eye" or photokeratitis. The intense UV light emitted during the welding process can cause burns on the cornea, leading to painful symptoms and temporary vision loss. Prolonged or unprotected exposure can even result in permanent damage or blindness.

Additionally, the bright visible light created during arc welding can also impair vision temporarily, making it crucial for operators and those nearby to wear appropriate protective eyewear. Safety practices in welding include using helmets with protective filters and face shields designed specifically to block harmful rays, underscoring the importance of safeguarding eye health during welding activities.