Staring at screens all day isn't good for us—we know this. It can cause eye strain, sometimes called computer vision syndrome, and the light is so bright it can mimic sunlight, mess with our hormones, and prevent us from feeling sleepy. The blue light tablets, smartphones, and laptops emit is so bright we can see our screens on a sunny day. According to a new study, published in the journal Scientific Reports, this blue light might speed up our chance of becoming blind. Previous studies have shown how harmful blue light is, but researchers from The University of Toledo have shown the mechanism of how it can make molecules become "toxic." The team found that shining blue light on eye cells transforms vital molecules into cell-killing poison—which can lead to age-related macular degeneration, one of the biggest worldwide causes of blindness. Read More.