Laser safety glasses are designed to reduce the amount of laser energy reaching the eyes. Unlike standard safety glasses, laser eyewear uses specialised optical filters that attenuate specific wavelengths while allowing as much visible light as possible to pass through.

Each laser operates at a particular wavelength or wavelength range. Because of this, laser safety glasses must be selected based on the laser being used. A pair of glasses designed for a 1064nm laser may provide little or no protection against a 532nm laser.

Protection levels are measured using Optical Density (OD) ratings. Higher OD values indicate greater attenuation of laser energy. Many laser safety glasses also display EN207 L-Ratings, which provide additional information about performance under defined testing conditions.

Modern laser eyewear is available in a variety of styles, including wraparound frames, fit-over designs, and prescription-compatible options. The correct combination of wavelength protection, optical density, and frame design helps create a safer working environment when lasers are in use.