Just as an example, here is a SunCloud lens off a 20 dollar pair of glasses. Reason they are close to Oakley, is that they are base in prism lenses. VL, LineGear, XL, Walleva are not base in prism lenses. LineGear are just as bad as VL, Walleva etc.... Your just paying more for a better mirror finish, which actually is one of the issues with blurry vision quality.