Which item should always be worn to protect the eyes when welding?

When welding, a face shield is essential for protecting the eyes due to the intense brightness and harmful radiation produced by the welding arc. Unlike safety glasses, which may not provide complete coverage, or prescription glasses that lack the necessary protection against harmful UV and IR rays, a face shield offers a broader shield against these hazards.

Welding can produce sparks and molten metal that can easily cause serious eye injuries, so the face shield acts as a crucial barrier. Additionally, many face shields come equipped with dark lenses specifically designed to filter out harmful light, providing the welder with necessary visibility while ensuring eye safety.

Using sunglasses, while they may provide some reduction in visible light, are not designed for the specific hazards of welding and therefore do not offer adequate protection. The comprehensive shielding provided by a face shield not only safeguards the eyes from immediate danger but also reduces the risk of long-term eye damage from repeated exposure to welding operations.