What two items are mandatory to be listed on laser eye protection equipment?

The correct answer is the option that includes Wavelength and Optical Density.

In laser safety, identifying the wavelength is crucial because lasers emit light at specific wavelengths that can vary in their potential to cause harm to the eyes. Different wavelengths interact with eye tissues in various ways, and knowing the wavelength helps assess the necessary protection level and effectiveness of the protective eyewear.

Optical Density (OD) is a measurement of how much a lens can reduce the intensity of light at a given wavelength. It indicates how much protection the eyewear will provide against laser radiation. The higher the optical density, the more effective the lens is at blocking harmful laser light. This is an essential parameter in selecting appropriate eye protection for laser applications, ensuring that the eyewear will adequately safeguard against exposure risks.

When evaluating laser eye protection, it’s important that the information listed supports the safety of individuals working with lasers, making Wavelength and Optical Density key pieces of information that must always be included to ensure proper selection and usage.