Simple 20-20-20 rule can help ease some of the symptoms of prolonged computer use

It’s long been recommended as a way of easing eye strain while working at a computer screen. Now the 20-20-20 rule – taking a break of at least 20 seconds, every 20 minutes, to look at least 20 feet away – has been confirmed by scientists at Aston University to help ease some of the symptoms of prolonged computer use.