The Gunnar Optiks HAU-00103Z Haus Color Enhanced Computer Glasses are the only eyewear recommended by doctors to protect and enhance your vision when viewing digital screens at home or in the office. Eye strain, visual stress and dry eyes can be caused by extended periods of digital screen viewing and office lighting. Stay focused and perform more efficiently throughout the day with these stylish onyx frame glasses designed to improve visual performance, enhance focus and reduce eye strain for those with 20/20 vision. The Haus design uses European hand-crafted materials melded into micro-forged modernistic detailing; the Acetate temples with inner bendable cores provide a customizable fit. The multi-layered acetates also catch and reflect light creating depth and stylistic detail. The Crystalline lens is specifically engineered for the graphic designer, video/film editor, or creative artist who requires an equally balanced color spectrum to design and edit in true color. The lens also features GUNNAR"s i-AMP lens technology which filters out the harsh, high energy part of the spectrum to reduce digital eye strain and enhance viewing detail. Their 53-millimeter wide lens design frames your face to protect your eyes from dry air currents, effectively preventing irritation. The Haus"s 140-millimeter temples, 30-gram lightweight construction and multi-layered acetate composition are designed to generate proper strength and optical stability. The 15-millimeter nose bridge and one-piece front construction provide optimal stability and comfort. The Gunnar Optiks HAU-00103Z Haus Full Rim Color Enhanced Computer Glasses come with a (1) year limited warranty against manufacturing defects. The ultimate result is improved clarity, focus and performance that meet the demanding visual needs of a new generation. Visit www.amazon.com/gunnaroptiks for more information on Gunnar Optiks and our extensive line of products.