What is 20/20 Vision?
In this video, Mark aka MFA, goes over the definition of 20/20 vision as well as going through some examples on different types of vision based on using the widely used Snellen Chart. The Snellen Chart was created by the Dutch ophthalmologist Herman Snellen in 1862 and has been used worldwide since.
Basically having 20/20 vision means that at 20 feet, you can see as well as a nominal, or predefined normal person's vision at 20 feet. Where normal vision is defined as being able to see 2 lines separated by 1.75mm apart from 20 feet. A person with 20/30 vision means that you can see from 20 feet the same as a normal person from 20 feet.
Watch Video On:
- DTube: https://d.tube/#!/v/mes/sq1uzdvok3p
- BitChute: https://www.bitchute.com/video/3qSmDFAYRsli/
- YouTube: https://youtu.be/31kYnnIjugQ
Download Video Notes: http://1drv.ms/1M0GJck
View Video Notes Below!
Download These Notes: Link is in Video Description.
View These Notes as an Article: https://steemit.com/@mes
Subscribe via Email: http://mes.fm/subscribe
Donate! :) https://mes.fm/donateReuse of My Videos:
- Feel free to make use of / re-upload / monetize my videos as long as you provide a link to the original video.
Fight Back Against Censorship:
- Bookmark sites/channels/accounts and check periodically
- Remember to always archive website pages in case they get deleted/changed.
Join my private Discord Chat Room: https://mes.fm/chatroom
Check out my Reddit and Voat Math Forums:
Buy "Where Did The Towers Go?" by Dr. Judy Wood: https://mes.fm/judywoodbook
Follow My #FreeEnergy Video Series: https://mes.fm/freeenergy-playlist
Watch my #AntiGravity Video Series: https://steemit.com/antigravity/@mes/series
- See Part 6 for my Self Appointed PhD and #MESDuality Breakthrough Concept!
Follow My #MESExperiments Video Series: https://steemit.com/mesexperiments/@mes/list
NOTE #1: If you don't have time to watch this whole video:
- Skip to the end for Summary and Conclusions (If Available)
- Play this video at a faster speed.
-- TOP SECRET LIFE HACK: Your brain gets used to faster speed. (#Try2xSpeed)
-- Try 4X+ Speed by Browser Extensions or Modifying Source Code.
-- Browser Extension Recommendation: https://mes.fm/videospeed-extension
-- See my tutorial to learn more: https://steemit.com/video/@mes/play-videos-at-faster-or-slower-speeds-on-any-website- Download and Read Notes.
- Read notes on Steemit #GetOnSteem
- Watch the video in parts.
NOTE #2: If video volume is too low at any part of the video:
- Download this Browser Extension Recommendation: https://mes.fm/volume-extension
What is 20/20 Vision?
Definition:
At 20 feet or 6 meters, a human eye with nominal (normal) performance is able to separate contours that are approximately 1.75 mm apart
Snellen Chart:
Named after the Dutch ophthalmologist Herman Snellen who developed the chart in 1862.
Why is it called "20/20?”
You post has been manually curated by BDvoter Team! To know more about us please visit our website or join our Discord.
BDvoter Team