20-20-20 Eye Care

Every 20 minutes, look at something 20 feet away for 20 seconds. Reduces digital eye strain.

Next break in

20:00

Completed breaks today: 0

The Zehano eye care reminder runs a quiet 20-minute interval timer for the classic 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds. The intervals are customisable. It runs in your browser tab and gives a soft visual nudge when it is time for a break.

How to use the Eye Care Reminder

Open the timer. Click start when you begin a stretch of screen work.
Work as usual. The timer runs in the background. Every 20 minutes, a gentle prompt appears.
Look away for 20 seconds. Focus on something at least 20 feet away. A window, a wall down the hall, a tree.
Blink a few times. Conscious blinks redistribute tears. This is half the benefit.
Return to work. Dismiss the prompt and continue. The next interval starts automatically.

Benefits

Reduces digital eye strain. Regular breaks ease the dryness, blur, and fatigue from sustained near focus.
Restores blink rate. Screen use drops blinks from 15-20 per minute to 5-7. Conscious blinks during breaks help.
Relieves neck tension. Looking away changes head position, briefly relieving the static screen posture.
Easy to forget without help. The reminder removes the need for willpower; it just runs.

The science

Digital eye strain affects roughly half of frequent screen users. The 2018 Sheppard and Wolffsohn review in BMJ Open Ophthalmology documented the symptoms (dry eyes, blurred vision, headache, neck tension) and their primary causes: reduced blinking, sustained accommodation of the lens muscles, and convergence demand from close screens. Regular short breaks help on all three counts. The specific 20-20-20 timing is a heuristic rather than precisely validated, but the general principle of frequent short breaks is well supported in research.

The 20-20-20 rule is one of several reasonable break patterns. The exact timing matters less than the regularity. Other ergonomic factors (screen distance, lighting, prescription) often have larger effects on eye comfort.

Tips for best results

Set the timer once at the start of a work session; let it run.
Use the 20 seconds to stretch your neck and roll your shoulders too.
Adjust intervals if 20 minutes feels too short or too long for your work.
Combine with screen ergonomics: arm's length away, top of monitor at eye level.

FAQ

Does the 20-20-20 rule actually work?+

Regular short breaks demonstrably reduce digital eye strain symptoms. The specific 20-20-20 timing is one reasonable pattern; other regular break patterns work similarly.

Will screens permanently damage my eyes?+

Current evidence does not support permanent damage from typical screen use. Digital eye strain is uncomfortable but not progressive.

Do blue light glasses help?+

The evidence is weak. Several studies have failed to show clear effects on eye strain. They may help with sleep when worn in the evening.

What is the right screen distance?+

Roughly arm's length, about 50 to 70 cm for a typical monitor. Phones are usually held too close; aim for at least 30 to 40 cm.

Is the timer free?+

Yes. All Zehano tools are free, browser-based, and have no signup or ads.