According to H.L. Bouton, all polycarbonate lenses stop UV. My glasses are ANSI Z87 standards, and they stop everything. For more info on this company, go to http://www.hlbouton.com/hlbhaz.html#uv Wards in Rochester NY has UV safety goggles for $6.75. These fit over regular glasses and provide splash protection as well. Call them at 1-800-962-2660 Hope this helps! Ed Stander