Infrared lasers require particular attention when developing laser safety procedures because infrared radiation may be invisible to the human eye. An operator may therefore be unable to see the beam or recognise an exposure in the same way they might with a visible laser.

Some infrared wavelengths can also be transmitted through the eye and focused onto sensitive internal structures. This makes appropriate eye protection especially important when working with accessible infrared beams.

Laser safety glasses for infrared applications must be matched to the specific wavelength. Infrared is a broad portion of the electromagnetic spectrum, so eyewear suitable for one infrared wavelength is not necessarily suitable for another.

Optical Density ratings should be examined carefully. A filter may provide different levels of protection across its wavelength range, and the OD required depends on the characteristics of the laser and potential exposure.

Frame design can also contribute to protection. Depending on the application, wraparound frames or side protection may help reduce exposure from indirect directions.

Because infrared radiation may be invisible, engineering controls are particularly important. Beam enclosures, barriers, beam stops and controlled access can help prevent accidental exposure.

Laser safety glasses provide an additional protective measure when a suitable filter is selected. They should never be chosen based simply on the fact that they are described as "infrared" protection.

Always compare the complete wavelength and OD specifications with the laser system being used.