What information must be included on laser eye protection?

The inclusion of Optical Density and wavelength on laser eye protection is crucial for ensuring that the protection provided is suitable for the specific hazards presented by a given laser. Optical Density (OD) measures how much light the protection can block; a higher OD indicates better protection against intense laser light. The wavelength information is important because different wavelengths of laser light interact differently with various materials used in eye protection. This information helps users select the appropriate eyewear based on the characteristics of the lasers they will encounter.

Other options like weight and material type, color and manufacturer name, or price and date of manufacture do not provide critical data relevant to the operational effectiveness or safety of the eyewear in the context of laser exposure. While those factors may be beneficial in other contexts, they do not serve the primary purpose of ensuring adequate eye protection during laser operations.