SHINU Vintage Clubmaster Eyeglasses Frame Horn Rimmed Anti Blue Light Computer Glasses-SH018 Imported TR90 frame CR39 lens non-polarized Lens width: 54 millimeters Lens height: 38 millimeters Bridge: 18 millimeters Arm: 139 millimeters You Could Choose Clear Lens or Anti Blue Light Clear Lens. Filter Effect: Polarized Block Most of the Blue Light 100% UV.(anti blue light lenses) Minimizes Digital Eye Strain and Fatigue casued by Monitors and Screens.(anti blue light lenses) Great for Browsing, Playing Games, Watching TV or Working under Fluorescent Lighting.(anti blue light lenses) RX-compatibleSo You Can Fit Our Frame at Any Optometrist with Your Personal Prescription.(clear lens)