Oakley A FRAME Dual Vented, Lens High Definition Optics® (HDO®) 100 % UV-protection. CAD/CAM-engineering, makes lens replacement simple Replacement lenses are made from premium Plutonite® IRD = Iridium POL = Polished POLR = Polarized Important Note: Replacement lenses may not be returned if they have been mounted or scratched. Standard-size lenses cannot be installed in Asian Fit eyewear frames.