According to U-M and other sources, taking a break from our screens is a great way to prevent eye strain. But how frequently should we look away, and for how long?
Every hour for 30 seconds
Oops! Try again.
Every 20 minutes for 20 seconds
Correct! Ergonomics professionals usually go by the 20-20-20 rule: Look 20 feet away from your computer every 20 minutes for 20 seconds. Check out some other office ergonomics tips here.