Screen work: look far every 20 minutes
What it is
20-20-20: every 20 minutes, 20 seconds at something ~6 m away. A comfort habit — trials show little measurable effect; it's free.
Related
Sources
- Computer vision syndrome / 20-20-20 rule — American Optometric Association
Compiled with AI assistance from the public sources listed above. Not yet reviewed by a clinician — check anything important against the source, with Tipat Halav or with your doctor.