Use the 20-20-20 rule to save your eyes from the strain of working at the computer. February 17, 2017 by Ryan O'Ramsay Barrett Leave a Comment How long have you been staring at your screen? Friendly reminder here: use the 20-20-20 rule to save your eyes! After 20 minutes of screen time, stare at something 20 feet away for 20 seconds. Your eyes will thank you.