20-20-20 eye rule | Research, How To & Evidence | ProtocolEngine
20-20-20 eye rule
Also known as: 20-20-20 rule, screen break, visual rest
AAdequate Evidence650 studies referenced
Every 20 minutes of near work, look at something at least 20 feet (6 meters) away for 20 seconds. Relaxes the ciliary muscle that strains during sustained focus and is the most commonly recommended intervention for digital eye strain.
How to do it
1Set a timer or use a screen-break app every 20 minutes
2When it triggers, lift your gaze from the screen
3Focus on something at least 6 meters away (look out a window, across the room)
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