Wikipedia: Dean Evan Hart
Dean Evan Hart, O.D., M.A., M.S. (Candidate in Bioethics), B.S., A.A.S., F.A.A.O. (born November 4, 1957) is an American scientist, clinical optometrist, professor, and the founder of Woodbury Ophthalmic Group and Woodbury Optical Studio.
Newspapers.com
29 August 2002, The Leader-Post (Regina, Saskatchewan), “Eyecare & You,” pg. A11, col. 5 ad:
According to the Saskatchewan Association of Optometrists, a good rule of thumb for a visual break from the computer is the “20-20-20” rule: for every 20 minutes of computer work, take a 20-second visual break by focusing on a distance of at least 20 feet.
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Thomas Han
@ThomasHan
being nice to my eyeballs by practicing the 20/20/20 rule: Every 20 minutes, look 20 feet away for 20 seconds
7:01 PM · Mar 10, 2008
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Liz
@Fyurae
@extralife Make sure to follow the 20/20/20 rule. For every 20 mins at a screen, look away at something at least 20 ft away for 20 secs.
5:44 PM · Jan 13, 2009
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Ergo Nomic
@ergonomictimes
for your eyes apply the 20-20-20 rule: every 20 minutes take a 20 second break (or longer) and focus on an object 20 feet away!
7:08 PM · Jan 27, 2009
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Preserve Vision Florida
@PreserveVision
Want to reduce digital eye strain? Try the 20-20-20 rule: every 20 minutes, take a 20-second break from your screen to look at an object 20 feet away. By incorporating these three simple steps, you can help prevent strain on your precious eyes.
1:00 PM · Mar 27, 2024
New York City • Government/Law/Military/Religion /Health • Wednesday, March 27, 2024 • Permalink