What is 2020 vision? (It's not what you think)

An in depth look at what it means to have 20/20 vision.

Textbook definition of 20/20 vision:
The ability to distinguish an image that subtends 5 minutes of arc at a 20 foot distance.

The numerator of 20/20 defines the testing distance of the person being tested and the denominator defines the testing distance that a person with “20/20” vision would have to stand in order to see the same sized letters.

Definition of legal blindness in the US:
If someone has 20/200 vision or less in the better seeing eye (with a corrective lens) or has less than 20 degrees of visual field, then they are considered legally blind.

Question of the Day: When was your last eye exam? How good are your eyes? Can you see 20/20? Let me know in the comments!

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About this video: When was the last time you checked your visual acuity or had an eyesight test? At your last eye exam, an optometrist or another eye care professional likely completed an eye test where they measured your visual acuity by completing the snellen test or reading the snellen chart. If you were fortunate enough, your vision corrected to at least the 20/20 line. But what is 20/20 vision? What does 20/20 vision mean? Check out this video to find out.

[DoctorEyeHealth]

💥 Eye Health QOTD: When was your last eye exam? Did you have 20/20 vision? Better? Worse?

[DinarAndFriends]

"Illegal blindness" is when someone fakes the test to get a disability allowance.

[tessalia]

Before cataract surgery two days ago on my left eye: 20/400. After surgery: 20/150. Vision is improving by the day as the swelling goes down!

[dennisschuller]

I have had bad vision most of my life. At 50 I was -14 left eye and about -10 right eye. Wore contacts for over 30 years. They did give me very good vision. Eight years ago I had cataract surgery. The doctor was a master of his trade and so were his technicians. Now have 20/15 left and 20/20 right eye. Do need glasses for reading and close work. But absolutely amazing. Am 64 now

[BearyFunny]

Great video! I had my last eye test a month ago, and here they don't tell us if we have 20/20 vision, but instead the strength of our lens required to improve our vision. So you might have -6.0 in one eye that became -6.25 at your next checkup. Not sure if you've already done a video on discussing what that number means, but otherwise would love to see it!

[zheen]

Ahhh of topic but now i want to be an eye doctor when i grow up

[Bbelblelo]

illegal blindness is when I forget to put my glasses on before I hit the road I'm pretty sure. I mean I can see large objects like cars but I don't think thats the standard test at the DMV I failed

[mathiaskennedy]

I had a TBI February 2020 and my eyes got tested yesterday and I got 20/15 in my left eye and 20/60 in my right eye. My depth perception is terrible. Getting glasses on the 20th. Love your videos and information you provide, thank you!

[CreateWithZac]

This video was so well-made and easy to watch. I’ve had a hard time understanding vision metrics until now. Great work!

[androidaleccc]

Love the channel, been watching since the beginning. Your videos were a great resource as a tech. But now Im an optician so some optical oriented videos would be awesome (progressive designs, frame shape considerations, trifocals, et cetera)!

[alzoron]

My corrected vision is at least 20/10, probably a little bit better because the very bottom line is perfectly clear with glasses. People with "perfect" vision are often surprised when I can read things they can't see.

[jacquidunbar]

Thank you so much for your information. Love all your videos, so informative.

[jeannieherrera]

You are so informative. Thank you for your explanations. In all these years Ive never heard of this. I love your videos. Thank you for putting these videos up for us to understand our eyes better.

[CamberFilmSchool]

I always wondered what 20/20 meant, but never looked it up. Thanks! 👍🏽

[maedehasani]

Thanks for your amazing and interesting videos, I'm an optometry student and you inspire me alot :)

[jasonmerth]

Very interesting video! I currently work as an ophthalmic Tech working on doing refractions. You should totally make a video on the Jager chart and up close/ near vision correction. I also think that people would find
The convergence of the eyes very interesting.

[clwade]

So interesting, thanks for the information! Last time my eye doctor checked my vision without glasses I believe I was at 20/80. Usually they check with glasses so I have a feeling that number has gotten worse since it's been awhile. I am thankful for glasses and being able to see 20/20 with them!

[tantuv]

I like your videos. They are very informative.

[brandonpeay]

Thanks to you, I was able to put contacts and and take them out effectively. Thank you.

[graceo]

I have 20/20 vision





With my glasses on 😂😂😂