What is 2020 vision? (It's not what you think)
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- čas přidán 2. 01. 2020
- An in depth look at what it means to have 20/20 vision.
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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.
💥 Eye Health QOTD: When was your last eye exam? Did you have 20/20 vision? Better? Worse?
Not sure. What I can say is when I hold my hand up, 6 to 8 inches from my face, I can see it clearly. After that it starts to get fuzzy. I've had glasses since end of Grade 2.
Doctor Eye Health I got glasses in 5th grade... my life sucks... will eye excersises improve my vision?
Doctor Eye Health what is the meaning of visual acuity of 6/3.8.?
My vision is 20/400. Got glasses at 4th grade.
We used the metric system over here in Australia, & my last eye exam recorded a 6/30. 😂
"Illegal blindness" is when someone fakes the test to get a disability allowance.
I hate to say it but people do it....(they train us in school how to spot it)
@@DoctorEyeHealth use the retinoscope :D
Doctor Eye Health how do you spot that lol
@@DoctorEyeHealth *hi! could you PLEASE do a detailed video on Cornea transplant- explaining it's types, when it is necessary, is it a one-time surgery, are eyedrops compulsory after surgery n for how long, etc..*
(I was diagnosed as having 'keratoconus'(both eye) some 8months ago after a detailed eye checkup by our family-friend at his eye hospital, n I'm still yet to get 'Corneal Pentacam' analysis done, as prescribed by him, but my eyesight seem to have gone from-bad-to-worse :/ too blurry vision(despite wearing glasses), I'm experiencing difficulty in performing day-to-day activities as well, have to struggle my eyes, can't drive my two-wheeler that comfortably as I used to, specially during night times..)
PLEASE HELP!
@@DoctorEyeHealth Yes it would be very interesting to know how an eye specilist knows when someone is faking an exam. Maybe a video on that?
2020 vision: good
2020: bad
💯
20/20 vision: good
2020 vision: bad
😂
@@namelesschannel4103 me as 20/60 or 20/50 of my vision I see everything like a camera unlike other people that have 20/50 to see 20 feet miles me I see a 20 and 30 all over miles or all over 150 feets
bro i got 9/11 vision
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!
That's great! I am wishing the best for you!
@@DoctorEyeHealth my power -11 -10 be myopia
So how to improve
My eye vision
Update? I'm about to have cataract surgery in 3 days time myself.
You're lucky, mine has come back again.
Update??
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
Wow that's amazing
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!
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!
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
Makes sense
This video was so well-made and easy to watch. I’ve had a hard time understanding vision metrics until now. Great work!
Ahhh of topic but now i want to be an eye doctor when i grow up
That's awesome!!!!
actually your are right on the mark
To destroy people's vision with minus lenses?
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)!
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!
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.
That is because they do not have perfect vision. Most refractometers only have 0.25 resolution, so anything below 0.25 is not visable. For example I have -4.12 sphere and -4.87 cylender om my right eye which is further rounded on those meters. Also glasses cannot be done with this in mind. There is also keratometers that allow to see the astigmatism components.
@@lolerie how do you get the precise measurements?
I always wondered what 20/20 meant, but never looked it up. Thanks! 👍🏽
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.
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.
haha...watch. by 20/30 I will have enough videos I will practically have opened a free school for optometry!
I used to have 20/20 vision in both eyes... And then I got glaucoma. Now I have 20/40 in one eye and 20/50 in the other. I'm only 22 years old. Glaucoma can effect people of all ages. Please get your eyes checked regularly!
Thanks to you, I was able to put contacts and and take them out effectively. Thank you.
Thank you so much for your information. Love all your videos, so informative.
thank you!
I just had cataract surgery, both eyes, corneas are not good, Fuchs disease, not having transplant as of yet. I have dry eyes, but now will be going to the optometrist to see about glasses again, and will talk about what kind of dry eyes I have. Thank you for the video. Very informative. Doreen
Thanks for your amazing and interesting videos , I'm an optometry student and you inspire me alot :)
Happy to hear it! I hope we can meet at a convention some day!
I'm an optometry and orthotics student.... Your videos are helpful... Thanks sir
20/80 right eye 20/15 left with Rgp contacts. The poor vision in right eye due to amblyopia. The left may be better than 20/15 as that was the smallest line they had me read and it was quite easy. RGP contacts are amazing for clarity.
I had lasik two weeks ago.Went from 20/70 to 20/15 and my significant astigmatism is almost completley gone. I can finally drive at night with confidence. I am thrilled!
Sweet! I'm thinking about trying it!! 20/40 so I think it'll be a little less expensive for me.
Thank you so much, you made me feel better ☺️.
Very useful info. Thanks!
I like your videos. They are very informative.
I got PRK 3 months ago and i can see 20/15 now! im super happy !!
You are a rock star ..thanks for all your videos
I had a lazy eye as a kid, and I remember when I would go to the eye doctor at age 3-5, they always used those pictures instead of letters or the e that I had to hold my fingers up and show which way it pointed. My last vision check was in August, and my glasses made my vision better than 20/20.
I’d love to see videos on legal blindness as well as amblyopia! I have both.
Both coming soon!
Wow! In this video you touch so many topics concerning my situation and I even wonder if I can see clearly the big E letter with my actual glasses...I think yes but not sure anymore.
Great vid! 💛
I’ve always wondered why they ask what one can see, vs what one can see “clearly”. What good is seeing a lower line, where the letters are still identifiable, but not totally clear?
True. I always manage to distinguish even the smallest numbers but they're blurry as all hell and my vision is actually terrible lol.
@Jimmy De'Souza Sounds like potentially two different tests; can you see the letters (clearly), or can't you tell there is actually letters there (or just a smeary blur).
when the eye doctors ask me that i always answer with what i can see clearly because what's the point of seeing it if i can't clearly make out what it is?
That's because a good vision would be single, clear and binocular. If you're seeing the 20/20 line monocularly without blur then your vision is fine.
@@lugardebighe not true! You can have issues with binocular vision while seeing clearly out of each individual eye
As a kid (I am 28 now), my vision was 20/10 left and 20/15 right. Since my last couple months in the military my vision degraded and I finally got seen for it about 18 months ago. I found out I have keratoconus, and now my vision is 20/200 in both eyes, over the course of about the last 4 years. I am "20/40" in both eyes but that doesnt account for the fact my eyes were dilated during the test and I still have the starburst effect. I just got fitted with scleral lenses on wednesday and I am so excited. They got me to 20/20 on the first iteration and didnt expect to ever get me to 20/20. Thanks for your videos
Glad i found this channel 🔥
We use 10 out 10 as the normal vision using the Monoyer Chart.
Could you please do a video in which you compare some of the different system used to measure visual acuity.
Great info Doc. Thank you very much. Anybody ever tell you that you look like Jimmy on NCIS. Cause you do. 😂👍🏻
I have 20/20 vision
With my glasses on 😂😂😂
I dont even have it with my glasses on i think I need mew prescriptions again
Is there already a video on legal blindness, visual impairment or on visual field loss out there by your channel? I would be really interested in hearing you cover those topics.
I have 20/15 and had no idea what tf that meant so thanks for this video mate
I saw my eye doctor about 6 weeks ago, I was 20/20. Roughly 3-5 days later I was diagnosed with APMPPE and saw my doctor again, my vision was 20/80. Now these 6 weeks later my vision is better but not sure if I'm back to 20/20 or ever will be back to it again, seeing the doctor in a week.
My 30 year old son is legally blind in 1 eye. We were told by an optometrist that it was because he was given an extremely high level of oxygen when he was born. Have you ever heard of this? When his children were born, he was practically breathing down the nurses necks making sure they weren't given too much oxygen. I've always wondered about that whole ordeal.
Yeah to much oxygen can be a bad thing. Very common, few people know about it even in the medical field
This is like what happened to my mom as a newborn, in an incubator, but it may have been heat rather than too much oxygen, or was both. She has that on top of genetic eye issues. I seem to have inherited genetic issues. My mom is vague on what her actual eye issues are, like if severe myopia, if bad floaters, and so on. She had cataract surgery and still has issues. She had a retinal detachment about 10-11 years ago. I had one 2 years ago.
That's very scary
Iam a myopic person with no glasses leading a normal life.But I feel frustrated that I can't sit on the first bench in the class without wearing glasses...
You should get glasses or you could end up becoming Amblyopic
When properly corrected, I can see 20/15. I value that clarity.
💯💯💯
Thanks. I always found this measurement confusing. And then when you get contacts, you get a power of -2.0!!! Maybe you could do a video that relates 20/20 measurement to the power of the contacts (and I think glasses).
That is a cool topic! I will see what I can do. Maybe a sort of video vision test where I can throw that tidbit in there.
It is a.50 of the diopter of the lens, for every point of missing vision…, so if you are wearing -2.00 sph, you are likely will be 20/40 uncorrected vision!
This is just basic idea, without getting involved in the medical details..👌
Thanks for the info
Congrats on 100k
Hey Thanks! ...not quite there yet. But Thank you for your vote of confidence!
I used to work with you at PCVC! Hope all is well. Had no idea you had a CZcams channel! ☺️
That's awesome!
Doctor Eye, I want to ask you something that's been puzzling me on this test. I noticed that this type of test is done in a dark room with a lit screen. But on a dark room the iris of the eye is opening, letting more light in. One's cornea may not be constant in shape and it can distort if the iris is more open, because light is entering the eye on a much wider area through cornea. But if there is a lot of light (like in a sunny day), light enters through a narrower hole in the eye and maybe it doesn't affect the part of the cornea where you may have problems. So, why is the tests concluded in the dark? Will glasses work the same in the dark and in the light?
Some tests are dark room tests such as Ophthalmoscope examination. Visual Acuity tests are however done with full illumination.
Hey doctor I’m a 14 year old boy so my left eye won’t turn full left and cause of that I see two thing if I look left or if things are far.
Had lasik on Tuesday checked eyes today can read 20/15!!! Amazing!
Amazing!
I had my last eye exam about a month ago with no changes which is a very possitive thing considering I use a computer for hours on end daily
👍👍
Aw the E's I remember those as a kid. It was great when they started to just look like rectangles.
Because they got so small?
@@DoctorEyeHealth yup.
because I've always had bad vision, in elementary school (in my school district that's kindergarten through 4th grade, I know it varies greatly between states, countries, etcetera )during 1st and 2nd grade I got put into the special education for reading class. I could read and comprehend everything, but where my vision wasn't the best I had trouble reading so they thought i had an IEP until the teacher that was over it suggested I get my vision tested. lo and behold after i got glasses in didn't have reading issues anymore.
That's a great explanation. Thank you! I have a question: What's the angle of vision for a normal person and does this angle change by different people or is it more or less the same for all people? I assume this angle if fixed for a given eye and does not change, right?
Well the angle is used as a standard to improve the accuracy of measurement. But Some people can have a reduced angle of visual field (not acuity).
I went to the eye Dr This past weekend and I just found out that I have double astigmatism. I’ve had it in my left eye since I was 12. I didn’t even know that you could develop an astigmatism in both eyes.
Seeing is a privilege sometimes. Need not be 20/20 but just seeing.
Ain't it Sir?
seeing is indeed a privilege. Even if you have just a little bit of vision.
Can you talk about different kinds of amblyopia and potential ways of treating it, and potentials for treating it in adults? (I'm doing some experiments myself)
I had lasik a year ago vision improves still everyday . I can see 20/10.
I see 2020 👀
👍🎉Nice!
Did you predict how awful it would be?
I have strabismus and amblyopia in my left eye! I also failed the field of vision test in that eye. Then add the elevated IOP, and borderline glaucoma, my right eye has more damage than my left.
Please do a video on legal blindness!
The frickin title confuses me to thinking the “2020” is the year instead of the “20/20”
Thank you!!
As a kid I had 20/30 vision, as a teen I had 20/40 ish, this is when I had trouble seeing in the classroom. At 17 I had 20/50 now at 22 I think I might have 20/60 since I’m starting to have trouble seeing in my glasses far away .I think I have progressive myopia. also as a kid I had trouble reading as well, and I also have astigmatism. Glasses are a game changer for me.
I have 20/20 vision check. A month now but still get dizziness sometimes.
I'm farsighted and have amblyopia. I can see 20/15 with my right, and 20/25 with my left eye. Same with or without glasses or contacts. My powers are +3,25D for my right eye, and about +3,5-3,75D for the left. Love watching your videos.
Can you pleaseee review the bausch and lomb renu fresh multipurpose solution, since it’s had problems before, do you think it’s safe?
With eye exams, are they always aiming to get 20/20 or higher, or do you simply aim for a certain spot? When switching through the discs in the eye thingie, once it reaches one type of spot. Once the person says yes, they usually stop. Wondering if all examiners go for a generalization, or if you simply know there is nothing more you can do with glasses alone. Thoughts and answers are much appreciated! Thanks.
Great question Michael. We do aim to get at least 20/20. IF a person cannot read 20/20 with optical correction alone, we search for a medical reason why (cataracts, retinal disease, corneal disease, neurological problems etc). During the refraction process, it is best to not "overprescribe" so it is generally accepted to give the least amount of minus power needed to read the 20/20 line. However, that is a bit of an oversimplification. There are several endpoints to be considered with a final prescription.
This is really helpful to know! I have 20/20 vision after LASIK but I wanted to get 20/15 vision. Can you go from 20/20 to 20/15?
I can see 20/40. I recently went to a physical exam and was asked to read the 20/20 line. I told them that I felt better reading 20/40 line. Ever since I had an episode of high blood pressure, my vision has changed dramatically.
Have you seen an eye doc since? perhaps something has changed that needs to be looked at.
Great content mate i have problems with my eyes like eye spasms alot and swollen eye lids sometimes one eye looks bigger then the other and I been told my eyes don't focus well like they are buze eyed can u help Dr plz
Just got Lasik. It's surreal seeing everything without spectacles after 10 years.
I was wondring how this procedure helps
@@CPR4THEBODYlivingaenrichedlife it just removes the part of eye that is broken for astigmatism and does a correction for sphere.
I went to a check up (i dont have glasses) for my vision and i saw only 2-3 rows but i feel like that when i look on the board at school its not that bad
I worked with a guy who could read the street names from Google maps on a PC monitor from about 11 feet away. Here I am, no more than 11 inches away and I have trouble. My doctors use a projector for the eye chart. It makes it hard for me to see due to distorted vision from a creased retina, and shimmering spots probably from a laser procedure that was performed to close up bleeding blood vessels. I also have light sensitivity and the bright background washes out the letters. It's like when you watch a video of a car coming out of a tunnel. When they just exit the tunnel, the image goes almost all white until the camera corrects the exposure. I told them this and asked if they have an "old school" chart. They said they don't use those anymore. No wonder they can't narrow down a decent prescription for my glasses.
Are daily contacts healthier for your eyes than monthly? And which brand do you recommend?
I've had glasses since I was five. I have to purposely be honest on the test because I've seen all the charts so many times. New prescriptions even with my astigmatism (roughly -4.5, -2.5, 10°) can get me much better than 20/20 and I can always read the bottom line
Would you like the perscrition or the whole record including refactive index cycilnder and axis....
Very good teaching ! Thanks !!
One qus: what is someone's visual acuity if they can only see hand motion ?
Or just counting fingers or light perception ?
Very Very good question. At that level of vision, we document just that. That is when the standard charts begin to fail. We do have some low vision charts but with extremely poor vision...hand motion and light perception is the best way to document it.
@@DoctorEyeHealth thanks a lot for your quick reply !
Keep making great videos !! Thanks !
Hi Dr. I am a pretty smart and Scientific person, but I must admit when you started talking about the minutes of arc, I got very confused
Greetings to you sir and more grace to you for all that you have been doing for us to have a good eyesight.
Sir, I want you to help me get rid of gloucuma without operation. Also I want to know if I can use lens or sunglasses as a glocauma person to protect my eyes ?
Thank you very much sir for your understanding. May the God almighty continue to help you educate us on how to maintain our good eyesight. Due have a great day.
I can't even see the big E without my glasses. ☹️
Right Eye is 20/200 - Left Eye 20/80 . But with my scleral lenses both eyes are 20/25 :)
That is awesome! I love scleral lenses! Do you know what brand you wear?
Can you do a video about online eyeglass sites? Are they a risk? For clarity, I am asking about online sites where you can purchase frames inclusive of lenses.
I am working on that...The biggest thing is making sure the prescriptions are correct and they they are adjusted correctly, its common to see errors with online glasses. Be sure to get a good Pupillary Distance measurement.
when i was 8 years old, i faked an eye exam cause i really wanted to wear eyeglasses. now i can't fucking see
Stupidity
Glad you covered the metric system as here in the U.K we use the focal range of 6/9 to determine 20/20 vision!
Nice 😏
In college 40 years ago, I had prescription of -1.00 OD and -1.25 OS. Last month and also two years ago, I was tested to be 0 OD and -0.25 OS. Of course, I have presbyopia at my age.
What how????
How about a video on eyes that haven’t developed properly
Yes, the glasses allowed me to see all the pages. Very interesting. 47 today, color deficiency found in kindergarten.
I don't think it's "legal blindness" vs "illegal blindness", but rather: being "literary blind" vs being "effectively blind" - the latter is what's meant with being "legally blind". I had my eyes tested 3 months ago and the eye doctor stopped at 20/20 even though I was in fact able to read the line below it as well...
Well said Charli!
i just had a smile surgery and my doctor said that my right eye is measured at 1.5 and left eye is 1.2. WHat does that mean ?
I have astigmatisms in both eyes I think the left is -4.25 and right is -3.5
20/20 means you can see stuff from 20 feet in front of you that’s is less then 20 feet tall also means that anything bigger then the shapes or letters shown at the top will be harder to see
Hello
Is there any lens in astigmatism daily disposable out to purchase?
My left eye prescription is
Left eye
power+2.50
BC 8.7
Dia 14.5
Cyl -2.75
AX 180
Right eye power -.50
BC 8.7
Dia 14.5
Cyl -2.75
AX 010
I’m currently wearing
Biofinity toric cr
Bauch Lomb or Acu Oasisy Ultra
Switch it up mainly with Bauch Lomb.
Is there a way to treat 20/40 vision without lenses and/or contacts??
Wow I can’t see the big E without my glasses.
I do have a question I have been wearing glasses since kindergarten, but what I want to know is when they ask you how far down you can see does that mean completely clear or with slight blurriness around the edges? I can make out of the letters but sometimes they have a blurry edge so should I count that as seeing clearly or should I go for the line above it?
For corneal erosion, how often should we use antibiotic drops.
My optometrist says that my vision hasn’t changed (I have -6,50 and -5,75 myopia plus astygmatism) at each of my yearly test., yet I find my vision to be very blurry and I have to squint my eyes a lot in my daily life and when I have my eyes checked. I have voiced this concern to her, but she never took the time to explain to me what’s wrong.
I can see line 20 on the chart in my glasses but can only barely make out the the face of someone a few feet in front of me. As a result I still feel like I can't see all that well with my glasses (being unable to make out things the average person can see) should I be using stronger lenses?
I had a medication for a viral. Now i am have near sighf blurred vision. My eyes cant focus on thing that close to me