Gunnar digital eyewear increases visual performance, prevents Digital Eye Fatigue (DEF) and protects against full-blown Computer Vision Syndrome (CVS). It all begins with i-AMP lens technology -- an optical platform that incorporates proprietary lens materials, lens tints, lens coatings, and lens geometry. Gunnar digital performance eyewear is engineered for an immediate and profound visual advantage and now even the most demanding computer users are more productive and more effective for longer periods of time.