... Seiko BP-01) Gerber Freeform Machine RX Lens Range:Single Vision:1.499,1.56,1.61,1.67Polarzed Lens:1.499Photochromic Lens:1.56,1.61Progressive Lens ... for Kids:1.56,12mmBifocal Lens:1.499,1.56Progressive Lens ... -4.00D,1.00—3.001.560Flat-Top+7.50D~-10.00D,CYL-4.00D,1.00—3.00 1.67 high power RX ...