Trivex-A relatively new material, trivex lenses are the lightest choice available and come with built-in ultra-violet protection. They are also the best lenses for prescription sunglasses, as they accept the tinting process with the sharpest visual results.
Trivex lenses are impact-resistant, but they are not yet certified for safety eyewear. They are the most versatile lightweight choice for all prescriptions and lifestyles and are suitable for any lens coatings or treatments—especially tinting.
Trivex lenses are sometimes marketed as Phoenix, Eagle Vision or Trilogy lens materials. This is the best lens for people who desire lightweight eyewear. They are also the best lens choice for rimless and drill-mounted eyewear styles as they will not chip or crack at the drilled points.
An added benefit of trivex lenses is that fact that the lens, in single vision prescriptions, is virtually distortion-free, eliminating the need to turn your head to see through the clearest portion of the lens.