20-20-20 Eye-Break Timer
Every 20 minutes, look about 20 feet away for 20 seconds. This free timer helps you remember the screen-break guideline. No signup.
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Want to check your screen setup too?
Read our source-reviewed guide to six practical screen-work changes, including viewing distance, glare and text size.
Why the 20-20-20 rule?
Prolonged monitor viewing may contribute to eye fatigue and dryness, and people often blink less while looking at a screen. Occupational and eye-health guidance recommends periodic look-away and blinking breaks; this timer is only a reminder.
Sources reviewed
General wellness information, not medical advice. See an eye-care professional for persistent strain, pain, or vision changes.