What do safety glasses or goggles primarily protect against?

Safety glasses or goggles primarily protect against dust or flying particles, which is crucial in many work environments where debris can be airborne. These protective eyewear are designed to create a barrier between the eyes and potentially harmful materials that could cause eye injuries, such as dust, metal shavings, wood chips, or other small particles that may be present during construction, woodworking, or manufacturing tasks.

The design of safety glasses and goggles often includes features like wraparound lenses and side shields to provide comprehensive coverage, ensuring that the eyes are shielded from risks associated with these types of hazards. While they may provide some defense against other dangers like chemical splashes or radiant heat, their primary function remains the protection from physical impact and airborne materials.