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A comment on Ask HN: How do you prevent eyestrain with daily computer use?. Parent comment

Re:Ask HN: How do you prevent eyestrain with daily computer ... by simonebrunozzi on Monday December 14, 2020 @04:44AM (#25415135)
> 3) THE BIGGEST: The 20/20/20 rule. Every 20 minutes, look at an object 20 feet (6m) for 20 seconds.

What is this suggestion based on?

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Re:Ask HN: How do you prevent eyestrain with daily computer ... by geocrasher on Monday December 14, 2020 @07:57AM (#25416926)
Doing research of my own on the subject. Just google "20/20/20/ rule". I just did, and found the following article. An eye care professional tracked it down and attributed to... another eye care professional.

https://www.optometrytimes.com/view/deconstructing-20-20-20-...

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