Note that use of personal protective equipment may have serious limitations when used as the only control measure with higher power Class 4 lasers or laser systems. The protective equipment may not adequately reduce or eliminate the hazard and may be damaged by the incident laser radiation. Protective Eyewear Protective eyewear is necessary for Class 3 and 4 laser use where irradiation of the eye is possible. Eye protection may also be necessary to protect against physical or chemical hazards. Laser Eye Protection Selection Process Determine the wavelength of the laser .
Eye protection is wavelength-specific.
Determine the maximum anticipated viewing duration. Determine the maximum irradiance or radiant exposure to which the eye may be exposed. Determine the optical density needed. Select the type of eye protection needed. Laser eye protection is available in the form of glasses and goggles.