EyeRest
A lightweight Windows tray application that gently reminds you to follow the 20–20–20 rule: every 20 minutes, look at something 20 feet (~6 meters) away for at least 20 seconds.
A lightweight Windows tray application that gently reminds you to follow the 20–20–20 rule: every 20 minutes, look at something 20 feet (~6 meters) away for at least 20 seconds.