These are the same laser safety eyewear that Lorenzo uses for his patients and during all of his classes. This specific model is used for protection from the 694nm wavelength, which is normally associated with the Quanta Q-plus C laseing device. The 694nm is the wavelength commonly used to remove tattoo pigments in the Green/Blue spectrum (Blue/Green/Purple/Yellow) . These laser safety glasses fit over most style of prescribed glasses. With it's black or white spectacle style frame constructed of nylon with soft touch finish offers a great combination of durability and comfort. They fit over most prescription style frames and offer a universal fit with wide field of view. The lenses has superior optical clarity with virtually no distortion in order to reduce eye fatigue and the design provides comfort for long periods of wear.