Today’s kids (and teens) are spending more time staring into digital screens. A lot more. To be sure, technology can be an important learning tool. But here’s the thing, too much screen time can cause serious eye strain for a child. The symptoms are easy to spot: sore, tired, itchy eyes that are either too dry or too watery and often trigger a headache. You can fight back by helping your child do one thing: Take regular breaks and blink.