Staring at the computer all day is horrible for your eyes. All those brightly colored pixels clashing with the lighting around you while you stare at your screen for hours on end—it's a recipe for eye fatigue, muscle strain, and headaches. By adhering to a few simple guidelines and by making some physical adjustments to your workspace, you can avoid putting too much strain on your eyes. Here are some tips to make your workday healthier. Follow the 20-20-20 rule.