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Screen Breaks — The 20-20-20 Rule for Tired Eyes

Long stretches in front of a screen leave many people with dry, tired and strained eyes. Eye doctors and ergonomists often recommend the 20-20-20 rule: every twenty minutes, look at something about six metres away for twenty seconds. A simple habit that gives your eyes the variation they need.

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New habit · New habits
Moderate evidence

Why screen breaks?

When we look at a screen we do several things our eyes are not built for over long stretches: we keep our gaze at a fixed distance, we focus up close, and we blink fewer times than usual. This combination can produce what is often called digital eye strain — dry eyes, burning, blurred vision and headaches after a while at the screen. Screen breaks are about regularly giving the eyes the opposite: looking away, focusing into the distance and blinking. The 20-20-20 rule is a simple way to remember it.

What the research says

👀 Digital eye strain is common

Complaints such as dry, tired and strained eyes after long screen work are well documented and are often grouped under the term digital eye strain. It concerns discomfort and fatigue rather than lasting damage — but the symptoms are real and common in people who spend many hours in front of screens.

💧 We blink fewer times at the screen

When we concentrate on a screen, blinking tends to become less frequent and more incomplete. Since blinking is what spreads the tear film across the eye, fewer blinks can contribute to a feeling of dryness. Deliberately blinking and looking away at regular intervals counteracts this.

⏱️ The 20-20-20 rule — an established rule of thumb

Eye doctors and ergonomics sources often recommend the 20-20-20 rule: every 20 minutes, look at something about 6 metres away for 20 seconds. The idea is to let the eye's focusing muscles relax from near work and to encourage blinking. It is a practical rule of thumb rather than an exact dose, but the principle — a regular break from near focus — has broad support.

Get started in 3 steps

You do not need anything new — just a reminder and 20 seconds now and then. This plan builds the habit so it eventually takes care of itself.

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Step 1: Set a reminder every 20 minutes

Start with an external cue: a timer, an app that dims the screen, or a notification every 20 minutes during screen work. When it goes off — lift your gaze and look at something far away for 20 seconds. The goal this week is simply for the reflex of looking away to start taking hold.

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Step 2: Add deliberate blinking and distance

When you look away: blink a few times, calmly and fully, and pick something as far away as you can — ideally out of a window. The farther your gaze can rest, the more the focusing muscles relax. It takes 20 seconds and need not interrupt your train of thought entirely.

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Step 3: Make the break automatic

Once the reminder has been in place for a while, many people start to sense the eye fatigue themselves and look away without being prompted. Keep the timer as support if you like, but let the habit slide into something you do by reflex. A short glance away at regular intervals then becomes a natural part of screen work.

More for your eyes at the screen

🪟 Give your eye something far away to rest on

A workspace with a clear view of a window or a room with depth makes it easier to look into the distance. If you sit in a cramped space — turn toward the longest line of sight in the room during the break. The whole point of 20-20-20 is to let the gaze release near focus for a while.

💡 Review your lighting and screen

Glare, reflections and an overly bright screen in a dark room can intensify eye fatigue. Adjust the screen brightness to the room and position it so that windows and lamps do not reflect in it. That reduces the strain between breaks.

🌙 Be kind to your eyes in the evening

Late screen work in the dark is often extra demanding for the eyes. Dim the screen brightness, increase the text size if it helps, and stick to the 20-20-20 breaks. And remember that sometimes the best screen break is to put the screen away entirely for a while.

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Cipoli-analys

Cipoli-analys

What does the data show about screen breaks?

Here we will show a group comparison between Cipoli users who take regular screen breaks and those who do not — and how it relates to the Screen Time Index and perceived eye strain over time.

  • ›Difference in Screen Time Index between the groups
  • ›Relationship between break-taking and perceived eye strain
  • ›Correlation with headaches, focus and evening fatigue
Why don't I see any data yet?

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Summary

  • Long screen work can cause digital eye strain — dry, tired and strained eyes.
  • The 20-20-20 rule: every 20 minutes, look at something about 6 metres away for 20 seconds.
  • Get started in 3 steps: set a reminder, add deliberate blinking and distance, make the break automatic.
  • Also review your lighting and screen placement, and be extra kind to your eyes in the evening.