Look Far From the Screen

This is one of the most important things you can do at a desk, and the most overlooked. When you read or stare at a screen, your eyes lock onto one short, fixed distance and the tiny focusing muscles inside them stay contracted for hours — that constant strain is what leaves your eyes dry, tired, and blurry, and it is a genuine driver of headaches and eye fatigue. Looking far into the distance lets those muscles fully release and reset, and it reminds you to blink, which re-wets the surface of the eye. Every twenty minutes, look at something at least twenty feet away for about twenty seconds. Your eyes need the break as much as the rest of you.