The Multiwave YAG Harmonics Alexandrite Diode Laser Safety Filter Polycarbonate Lens, is available for Non-Prescription glasses. To order, please select the frame style, that best fits your needs, from the options below. The Multiwave YAG Harmonics Alexandrite Diode lenses come with the same protection standard regardless of the frame selected. Please refer to the graph to the right, for the protection levels.