The Ultimate Guide to Blue Light Glasses for Work, Screen Time and Evenings If your days are spent in front of a computer and your nights on your phone or watching TV, you’re not alone. But hours of digital screen time can leave eyes sore, your head aching and your sleep disrupted. That’s where blue light glasses come in. This guide explains what they do, how they help and how to choose the right pair for work and long hours on screens. What Is Blue Light? Blue light is a high-energy visible (HEV) light emitted by the sun and by digital devices such...