20-20-20 rule
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.
One more thing
The most commonly asked question about the 20-20-20 rule is: "Do I need to switch back to [normalized] every time I shift focus, for a break?"
The answer is: whatever you wish. However, it would make your life easier if you kept the focal plane you are already using, be it [differentials] or nothing depending on where you are in your journey, for breaks under 5 minutes. If you are taking a much recommended longer break; this is a good time to switch to normalized, in order to ensure you are not trading close up strain for excessive blur strain.
References
- ↑ "American Optometric Association 20-20-20 rule poster" (PDF). American Optometric Association. 2020-05-30. Retrieved 2020-05-30.Page Module:Citation/CS1/styles.css has no content.
- ↑ Nall, Rachel (2020-05-30). "20-20-20 rule: How to prevent eye strain". www.medicalnewstoday.com. Retrieved 2020-05-30.Page Module:Citation/CS1/styles.css has no content.
- ↑ Steiner, Jake. "Eye Strain Awareness: Prevent Pseudo Myopia - Endmyopia". endmyopia.org. Retrieved 2020-06-01.Page Module:Citation/CS1/styles.css has no content.
- ↑ How To Improve Your Eyesight: Just 5 Steps
- ↑ Must Read: Going Outside To Improve Your Eyesight