We live in the digital age—which means you’d be hard pressed to find someone who isn’t spending a significant part of their day in front of a screen. According to The Vision Council, over half of adults feel the symptoms of digital eye strain after just two hours of computer time. The culprit? Extra blue light from screens that’s difficult for human eyes to filter out. You don’t have to give up your precious devices, just pop on some blue light glasses. Here’s how to choose the right pair.