ALLEN KEEN SHOOTING GLASSES CLEAR LENS The Keen Shooting and Safety Glasses by Allen are a great choice for those who want a good pair of safety glasses with a clear lens. These safety glasses are made using a clear, high-impact, polycarbonate lens that meets ANSI Z87+ ratings. The lenses are also anti-fog, U.V. and anti-scratch coated so that they last a long time. The frame is designed with a soft padded nose and temple so these glasses can be worn comfortably for long periods.