20-20-20 Eye Strain Timer

The 20-20-20 rule timer: every 20 minutes, look at something 20 feet away for 20 seconds.

Press start. Alerts every 20 minutes.

Informational only, not medical advice.

How to use

Start the timer — it alerts you every 20 minutes, then counts down your 20-second break.

What is the 20-20-20 rule?

Every 20 minutes of screen time, look at something 20 feet (6 m) away for 20 seconds. It relaxes the focusing muscle.

Does it cure eye problems?

No — it reduces strain symptoms. Persistent issues need an eye doctor. Not medical advice.

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