Working with Computer Screens? Save Your Eyesight

Do you work with screens (like computers) all day?

If so, how often do you shift your eyes to stare into space far from your screen, as if you’re idle, even when you haven’t left your desk?
If you don’t, start now; do so after about every 20 minutes.

The best way would, of course, be you rising from that desk frequently throughout your working day.