Radiation protective eyewear is a must if your eyes will be exposed to scattered, direct, or reflected laser radiation. There are three basic kinds of laser radiation.
Direct laser radiation happens when there is contact with a beam that directly comes from a laser. It is never good to get hit by a direct beam, whether accidentally or on purpose. Then, there is indirect or reflected laser radiation, which comes from a reflected beam, which typically carries only a fraction of the direct beam’s strength. However, it can still cause serious damage to the eyes.