GUNNAR - Blue Light and Computer Eyestrain Pioneers Almost 20 years ago, GUNNAR introduced the world to the idea that digital device use didn't have to be painful or detrimental to your eyes and body. GUNNAR still offers the the only patented, doctor-recommended computer eyewear that protects and enhances your vision by addressing all the symptoms of digital eyestrain. Nearly 70 percent of U.S. adults experience digital eye strain as a result of increasing use of digital devices. Cumulative exposure to HEV light can contribute to vision problems such as cataracts and age-related macular degeneration. If you're reading this text, you need GUNNARs.