20-20-20 rule

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The 20-20-20 rule is designed to be an easy to remember caution about doing too much near work and to give your eyes a break from eye strain regularly. This rule is supported by conventional optometry[1][2] and is a start towards the EM method.

  • Every 20 minutes
  • Look at something 20 feet away (6 meters)
  • For at least 20 Seconds

Endmyopia recommends even more breaks.

  • Every 20 minutes, take a 5 minute break.[3]
  • Every 3 hours, take the longest break you can (half hour to hour) [4]
  • Take your break outside. [5]
  • As you develop Strain Awareness you can customize your break schedule to your needs.


  1. "American Optometric Association 20-20-20 rule poster" (PDF). American Optometric Association. 2020-05-30. Retrieved 2020-05-30.
  2. Nall, Rachel (2020-05-30). "20-20-20 rule: How to prevent eye strain". www.medicalnewstoday.com. Retrieved 2020-05-30.
  3. Steiner, Jake. "Eye Strain Awareness: Prevent Pseudo Myopia - Endmyopia". endmyopia.org. Retrieved 2020-06-01.
  4. How To Improve Your Eyesight: Just 5 Steps
  5. Must Read: Going Outside To Improve Your Eyesight