The 20-20-20 rule is simple: every 20 minutes, look at something about 20 feet (6 metres) away for 20 seconds. Eye-care organisations recommend it as an easy way to give your eyes a break during long screen sessions. Combine it with comfortable lighting, the right screen distance and regular blinking.
Why do your eyes feel tired after screen work?
Looking at a screen up close for hours keeps your eyes focused at one short distance. Many people also blink less while they concentrate, and glare or a screen that is much brighter than the room adds to the effort. The result is the familiar end-of-day feeling of tired or dry eyes. The habits below are general comfort tips, not a treatment, and they do not replace an eye test.
What is the 20-20-20 rule?
Every 20 minutes, look away from your screen at something about 20 feet, or 6 metres, away, and hold your gaze there for at least 20 seconds. A window, the far side of the room or a long hallway all work. The idea is to let your eyes relax from close focus for a moment before you return to your work.
How do you remember to take screen breaks?
The rule is easy to understand and easy to forget. These small tricks help it stick:
- Set a repeating reminder on your phone or computer.
- Use the natural pause at the end of each email or task.
- Link it to an existing habit, such as every time you take a sip of water.
- Place your desk so you have a view into the distance.
How should you light your desk for comfortable screen work?
For evening work, use a desk lamp or a compatible monitor light bar to illuminate the desk. Adjust the angle until reflections disappear from the screen.
Match the screen brightness to the room: if the screen looks like a light source, turn it down; if you find yourself squinting, turn it up.
How far away should your screen be?
Keep your screen about an arm's length away, roughly 50 to 70 cm, with the top at or slightly below eye level. Looking slightly down tends to feel more relaxed than looking up. Increase the text size instead of leaning in, and keep the screen clean, because smudges and dust make text harder to read. A gentle cleaner like the Ergora Clear screen and lens cleaner turns that into a ten-second job.
What other habits help when your eyes feel tired?
- Blink fully and consciously a few times whenever you look away from the screen.
- Avoid sitting with air from a fan or heater blowing directly in your face.
- Use dark mode or a warmer screen setting in the evening if you find it more comfortable.
- Have regular eye tests, and wear up-to-date glasses for screen distance if you need them.
When should you see an optician or eye doctor?
These habits support comfort, but they do not replace professional advice. If your eyes stay tired, dry, red or blurry, if you often get headaches during screen work, or if your vision changes, see an optician or eye doctor.
Frequently asked questions
Is the 20-20-20 rule worth trying?
Yes. It is a simple, free habit that eye-care organisations recommend for regular screen breaks. Many people find it a useful reminder to look away and blink.
How far is 20 feet in metres?
About 6 metres. If you do not have that much space, look out of a window or as far across the room as you can.
Is dark mode easier on the eyes?
It comes down to personal comfort. Some people prefer dark mode in a dim room, while others read more easily with dark text on a light background in daylight.
What if my eyes stay tired despite these habits?
If symptoms persist, see an optician or eye doctor for an eye test. They can check your vision and advise you on glasses or other steps.