The majority of impact injuries result from flying or falling objects, or sparks striking the eye. Most of these objects are smaller than a pin head and can cause serious injury such as punctures, abrasions, and contusions. While working in a hazardous area where the worker is exposed to flying objects, fragments, and particles, primary protective devices such as safety glasses with side shields or safety goggles must be worn.

Secondary protective devices such as face shields are required in conjunction with primary protective devices during severe exposure to impact hazards.