This is serious ... did you know that worldwide, up to 70 million workers are at risk for computer vision syndrome, and those numbers are only likely to grow. Working adults aren't the only ones affected. Kids who stare at tablets or use computers during the day at school can have issues, too, especially if the lighting and their posture are less than ideal.

When you work at a computer, your eyes have to focus and refocus all the time.  They move back and forth as you read. You may have to look down at papers and then back up to type. Your eyes react to changing images on the screen to create so your brain can process what you’re seeing. All these jobs require a lot of effort from your eye muscles. And to make things worse, unlike a book or piece of paper, the screen adds contrast, flicker, and glare.