There are few things that children of the 21st century like to hear less than being told they need to put the phone or tablet away. The average American kid (or teenager) would happily scroll or click away until the moments before they go to sleep, if left to their own devices (see what happened when this family did an experiment with their children by giving them a weekend without technology limits!). However, there’s good reason to make sure our children don’t fall into this pattern. In a recent article, we talked about blue light (high-energy visible, or HEV light) emitted from the screens of computers, TVs and mobile devices and the effects it can have on our eyes. Kids and adolescents are actually more vulnerable to the effects of blue light than any other age group. This is for two reasons: their eyes haven’t had enough time to develop proper protection, and they have greater sleep needs than adults …