In additive manufacturing, CO₂ lasers are primarily used for selective laser sintering (SLS) of polymers and plastics, where operators are at risk of being exposed to scattered radiation at a wavelength of 10,600 nm. Specialised optics provide uncompromising protection for the cornea against thermal damage in accordance with standard EN 207. By blocking the infrared spectrum and featuring clear lenses, they ensure perfect visual control over the build area.