There is no single scientifically established interval that is perfect for every
person and every type of screen work. The useful principle is simpler: do not spend
hours doing uninterrupted close-up screen work.
Published 7 September 2026 ยท 20-20-20 Vision
If you spend most of your day looking at a computer, how often should you actually
take a break?
There is no single scientifically established break interval that is perfect for
every person and every type of screen work. But there is broad agreement on the
underlying principle: do not spend hours doing uninterrupted close-up screen work.
The 20-20-20 approach
A simple visual-break routine
Every 20 minutes, look at something about 20 feet (6 metres) away for at least
20 seconds. This is a micro-break from near viewing. You do not necessarily need
to stop work for several minutes or leave your desk.
Short visual breaks and longer breaks are different
20 sec
Visual micro-break
Interrupts continuous close-up viewing. Look outside, down a corridor or across
the room, then return to what you were doing.
Longer
Movement / work break
Gives you time to stand up, move around, change posture and spend more meaningful
time away from the workstation. A healthy screen routine can include both.
Not every useful interruption has to be a formal timer: moving to another task, looking around the room or leaving the workstation can also interrupt sustained near viewing.
What if you naturally leave the screen?
If you have just walked away from your computer, taken a phone call elsewhere or
spent time looking around a room, your eyes have already had a change from sustained
near viewing.
That is one reason an intelligent reminder can be more useful than a simple alarm
that rings every 20 minutes regardless of what you have actually been doing.
What if you are in a meeting, watching video or gaming?
A badly timed reminder is easy to dismiss and eventually ignore. 20-20-20 Vision
can pause around fullscreen activity, presentations and Windows Do Not Disturb
states, and Pro can also pause around video calls or selected applications.
The aim is not to interrupt you for the sake of hitting a timer. It is to help build
regular screen-break behaviour without becoming another source of distraction.
A practical routine
1
Start with a short visual break
Use approximately every 20 minutes as a simple starting habit rather than a medical prescription.
2
Look into the distance and blink naturally
Use the short break to interrupt sustained near viewing and let normal blinking resume.
3
Still take normal longer breaks
A visual micro-break does not replace time away from the workstation. NHS dry-eye guidance also recommends taking breaks to rest the eyes during computer use.
4
Adjust the interval if another schedule works better
The app supports reminder intervals from 15 to 60 minutes, so you are not locked into one rigid timetable.
5
Get advice if symptoms persist
If discomfort continues despite sensible screen habits, seek professional eye-care advice rather than assuming the screen is the only cause.
Make the habit automatic
The difficult part of any screen-break routine is remembering it while you are
concentrating. 20-20-20 Vision runs quietly on Windows and reminds you when it
is time to look away, with adjustable timing and smart pausing so it stays out
of the way during calls, presentations, video and fullscreen activity.
Windows 10 & 11 No account, no tracking Works offline Free + optional Pro
The best break schedule is one you actually follow
A theoretically perfect break schedule is useless if you forget it. For many people,
the value of 20-20-20 is not that the number 20 is magical - it is that the rule is
simple enough to become a habit.
And if remembering is the difficult part, that is exactly what 20-20-20 Vision is
designed to handle.
