The Optic Nerve Caspien Polarized Sunglasses appeal to the outdoor enthusiast who still harbors a little city deep in their veins. While the metal temple tag skews urban hip, the hydrophobic and anti-reflective coatings built into the Polarized Caspien lens says this outdoor enthusiast is a discriminating and and savvy shopper. Like most shades in the Nerve's Polarized lineup the Caspien is prescription ready. 2 Frame Colors: Shiny Black, Shiny Dark Demi.