Видео


Do Glasses Ruin Your Eyesight?



Hank brings the answer into focus.


Hosted by: Hank Green
----------
Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
----------
Dooblydoo thanks go to the following Patreon supporters—we couldn't make SciShow without them! Shout out to Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Benny, Kyle Anderson, Tim Curwick, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Bryce Daifuku, Chris Peters, Patrick D. Ashmore, Charles George, Bader AlGhamdi
----------
Looking for SciShow elsewhere on the internet?
Facebook: http://www.facebook.com/scishow
Twitter: http://www.twitter.com/scishow
Tumblr: http://scishow.tumblr.com
Instagram: http://instagram.com/thescishow
----------
Sources:
https://www.aao.org/eye-health/tips-prevention/five-vision-myths
http://www.aoa.org/patients-and-public/eye-and-vision-problems/glossary-of-eye-and-vision-conditions/myopia?sso=y
http://www.bbc.com/future/story/20140513-do-glasses-weaken-your-eyesight
https://www.ncbi.nlm.nih.gov/pubmed/9243655
https://www.ncbi.nlm.nih.gov/pubmed/12445849
https://www.ncbi.nlm.nih.gov/pubmed/24674576
https://www.newscientist.com/article/dn3082-eye-correction-is-seriously-short-sighted/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4087177/
http://www.mayoclinic.org/diseases-conditions/eyestrain/basics/treatment/con-20032649
http://hyperphysics.phy-astr.gsu.edu/hbase/vision/eyedef.html#c1


Просмотров: 802295
Добавлено:
Длительность: 3:19
Комментарии: 2687

Тэги для этого Видео:



Найти больше видео в категории: "27"
Видео загрузил:
Показать больше видео, загруженных


Комментарии:

Автор lunaevercast ( назад)
the first ophtamatrist i went to told my parents he could fix my nearsitedness with eye physical therapy once a week i went to the basment that looked like it was out of alice in wonder land and the the "therapist" had me do eye exercises. this of course didnt work as i now have strong perscription glasses.

Автор Kratos God of War ( назад)
could u guys explain the difference between radiation heat and extremely intense heat? I've tried researching it on Google but no websites I've (which btw is a lot) explains this topic. they'll explain just radioctive heat or convection heat but never the difference between radiation heat and extremely intense heat. thank u in advance.

Автор Famida Islam ( назад)
In my experience, after studying hard for exams in bright light, I got a severe case of myopia this frightened the hell out of me because I did not want to wear glasses because none in my family wears one and to me, its like becoming handicapped as you become permanently dependent on something.
after some research and focusing on far away objects more and squinting full Asian when in bright light or studying, after about 2 weeks I am back to normal
i still get myopic when dealing with close work however looking outside the window at the sky and far away trees seems to correct it pretty well

Автор samljer ( назад)
stopped wearing glasses, eye sight got better.
even stopped having it required to drive.

so... dunnoo....

Автор essennagerry ( назад)
So you say it's NOT the muscles that make the eyesight poor, but the eyeball shape, or WHERE in the eye the focus happens. Then you say diopters worsen because of wekened ability to focus on different things (what the muscles do), when actually diopters are supposed to be determined by where in the eye the focus happens.

So you say muscles don't matter, then you say they do matter.

I say they do matter, they're just not the only aspect. Hence why so many people have experienced worsen eyesight right after glasses and why so many people have fully cured their eye sight by exersize, yet simultaneously a lot of people can't do that.

There are many factors to eye health. I believe the industry wants you to dismiss a whole bunch (like eye exercise and nutrition) and go straight for glasses, then another pair, then another pair... When in reality a lot of people could benefit and some even cure their problem entirely giving those attention.

Автор Claudina Napitupulu ( назад)
for the sake of eyeglasses industry, yes, you need glasses

Автор CodeKujo ( назад)
When I was young, my eyesight was around 20/15. Then around 12 years old, my vision started to degrade. My prescription was getting stronger such that I was getting new glasses every year. Each time, I would get glasses that restored my 20/15 vision. Then one year when I was getting new glasses, the guy stopped at 20/20. "I can usually see better than this", I said. "Well, I could keep going, but since you do mostly computer work, it's just going to give you eye strain as your eyes have to work more to focus up close."

I left that day with two pairs of glasses. A distance pair for driving and sports, and a pair that corrected me to 20/50 for computer work. My prescription has been stable since then. I was 26.

The role the eye strain played in my changing prescription is unclear from just my experience, but the eye strain is real. If I forget my computer glasses and try to do a full work day using my distance glasses, it's very uncomfortable after about four hours. I suspect there are a lot of near-sighted people who would be a lot more comfortable wearing a weaker prescription at work.

Автор WatercoloredSilver ( назад)
Short Answer: No.

Автор Simplychrizz ( назад)
why is my Internet so baaaad? i have 100 mbit officially and i get fucking 0,05 Mbit wtf ????

Автор Mind over Mindfuck ( назад)
... My optometrist under prescribed me up until I was 19 and I got a different one... I had forgotten how stars should look... I hope people stop doing that now

Автор Discoboy ( назад)
Not true. I wear glasses only in exceptional circumstances (driving) and that's why I have same minus(-1) for 13 years+. Basically people who wears glasses or lenses lost more sight. Eyes exercises also help .I work on computers for all my life and if I wear glasses all this time, I bet my vision would be way worse. I don'y it's cool to wear glasses or lenses, because they are not good for a fight, if you are a man.

Автор faiaflrt ( назад)
So how can I know if I was unethically experimented on as a child, as this video seems to imply?

Автор Jainil Patel ( назад)
To be honest for me [NEAR SIGHTED] one day I was sitting on my couch watching TV WHEN SUDDENLY i realised I couldn't read the 'LG' symbol anymore. I got freaked out and told my parents who thought I was being dumb. Then 3 years later my eyesight went from 20/20 to -3 and -3.5 (basically everything further from ~ 5 metres is very burry)

Автор Nameless ( назад)
thanks thanks thamks thanks thanks thanks thanks thanks iblove u i love u i kove u

Автор Nameless ( назад)
THANK YOU WTF IVE ASKED SO MANY EYE DOCTORS ABOUT THIS AND THEY DIDNT KNOW OMGGGGGGGG THANK YOU THANK YOU

Автор Rifleatk1396 ( назад)
What about electronic deterioration? Is it different (if it's even a thing?)?

Автор Michael King ( назад)
you can do eye exercises to improve vision...

Автор That Totally Random Guy ( назад)
my left eye sees far distances blurry but my right eye is absolutely perfect

Автор DeadOrAlive ( назад)
But what about if your eyes are fine and you wear glasses? Are you still fine?

Автор Victoria Wilczek ( назад)
I had an eyeglass commercial before this....

Автор QueenofSilence101 ( назад)
I've never heard anyone say glasses make your vision worse. Why would anyone think that?

Even if you aren't a scientist, it should be common sense that this statement is stupid. Right?

Автор Songyi Han ( назад)
hell yea! look nerdy as you! (I love wearing glasses)

Автор Jeanette Hansen ( назад)
*Coughcough* The idea of glasses making your eyesight bad is because of how the chinese handle failing sight (with age). They proscribe paliptating the orbital muscles to try and strengthen the bloodflow to the eye and thus the ability to focus the eye properly. It reportedly works in many cases, but worth investigation.
(Choosing one solution over the other seems to be a cultural thing. )
Thinking that glasses will purposefully make your eyesight bad.. nyeeeeh. That's backwards..ish.
Either way, glasses or exercises, may you always see clearly! ;-)

Автор Guoenyi ( назад)
Ha! Now I can wear my specs even in sleep!

Автор Naum Rusomarov ( назад)
I've had mostly the same vision for almost 15 years now.

Автор Neil Doerdan ( назад)
They missed the research that revealed that although glasses do not ruin your eyesight, they certainly can make it worse. The only way to make it better is to stop or reduce the activities that cause the damage in the first place. Too much close up work for too long a period of time in poor lighting conditions.
Myopia can be repaired by allowing the ciliary muscle in the eye time to relax and return to its normal size along with retraining the eye to regain focus over long distances. If you wear glasses/lenses for close up work you add to the damage that can be done. If you wear glasses/lenses that give you 20/10 or 20/20 vision, then your eye thinks it is good and doesn't need to resize to get back to focus.

Автор Marla Jacques ( назад)
I tried eye exercises for a month and went from -4.75 to -3.50. Got new prescription from an argumentative dr so now I must keep it up, for sake of curiosity and spite!

Автор Sophie Filo ( назад)
I've...NEVER heard ANYONE say glasses make your vision worse.
Like....._What?_

Автор Khalid Bin Abdul Wadud Bin Haider Dhali ( назад)
also just look cool! :D

Автор Guilherme Sabino ( назад)
Well fuck. I was hoping for it to be true. My glasses broke and its way too expensive for me to get new ones.

Автор Ainat ( назад)
I got rid of my glass with the right "workout" for my eyes. so... yeah. there is such thing.
and I needed to go without glass or with a lower numer as well. and let them rest a lot... it took my a while but it was totally worth it.

Автор Julian Hart ( назад)
ruyat jaealat alnnizarat ghabia

Автор shng sam ( назад)
Nope, i totally disagree with this video

as a person with short sighted, I have a group of friends who is short sighted as well.

Those who were their glasses most of the time, includes me
having or short sighted getting worse every year

Those who didnt wear their glasses, or just wear them occasionally, after a few year they no need glasses anymore!

the real life case is very clear
and whats even clearer my eyeball size has change since i wear glasses, so does i notice those who wore glasses in my family. These things are so obvious why researcher didn't notice it ?

I have a severe myopic, and i regret i wore glasses all the time ( starting from age 7 i have perfect vision, 8, 9 years old i have 200 degree, than it just keep on increasing a lot every year )

Автор metalperslfx ( назад)
I need to reduce my time looking at screens.

Автор Stefano Liberale ( назад)
Is it just me or you look a lot like Daniel Tosh?

Автор Quen Loust ( назад)
I bet if I wore my reading glasses when my eyesight was good, it wouldn't be as bad as it is now. I'm not blind without my glasses, but I pretty much HAVE to wear them all the time if I want to have a good time.

Автор David 0/1 ( назад)
Fantastically stupid. Glasses definitely have made my vision worse. You described how eyes work, but failed to address why eyes become more oblong, and jumped to conclusions without evidence. This may be anecdotal, but i have experimented with my own vision and roughly measured changes by measuring the distance from my face where vision can focus - i got definite improvements after periods of not wearing glasses. I wish i could do.it more often, but unfortunately i have to live and work, and need the glasses too much. So people, don't listen to this trash… if you feel fine or 'good enough' without glasses, dont start the dependency. This channel isn't worth my sub anymore.

Автор Will H ( назад)
I love how you roll your eyes to the ceiling (and beyond) with this myth lol!

Автор Peter2kx ( назад)
bruh when I was a kid my vision was perfect then puberty hits.. and although it did lots of great things, one thing it did was made my vision shit. I can't see in the distance for the life of me lol

Автор The Smug Doge ( назад)
I NEED THIS

Автор Ayverie Ablaze ( назад)
The truth is... overcorrection ruins your eyesight. Including doing near work with a lens strength appropriate for driving. Glasses, if you already have mid to high myopia, prevent your sight from getting worse. But at -1 or less? If only you avoided them to begin with and made positive lifestyle and health changes, you wouldn't be at -6 with risk of retinal detachment now...

This video tows the line of mainstream optometry. I wouldn't really expect anything else from it. But it is an utter tragedy that we all are being played for money like we are. We are being lied to. Luxottica is a monopoly! They have far too much invested in this lie to let little ol' Hank dismantle their industry!

Автор Paul Bebnowski ( назад)
I love this channel and this host... I only listen to nerds.. in nerds we trust!

Автор mmarioivann ( назад)
Nice, could you explain how eye laser surgery works?

Автор LilMsMalevolent ( назад)
Urgh my first ophthalmologist gave me glasses with a lower prescription when I first started wearing them, thankfully changed doctors soon and got the correct prescription, albeit after like a year or so. Also, I had astigmatism so don't know if that's why my eyes got worse and worse or because of the wrong prescription or both!!!

Автор Riggro ( назад)
That's messed up. Thinking that you are more likely to be a nerd because you wear glasses.
I have perfect 20/20 (although I can already tell age is affecting my vision) and always have had perfect vision.
I can probably out-nerd a number of people here in these comments...
I have a feeling there's absolutely no correlation between eyesight and smarts...

Автор Aleybongo ( назад)
I have a complex eye problem and am negative 16 prescription

Автор Jet Addict ( назад)
you long eyed bastard

Автор EatenRibs i-si-u ( назад)
Thanks so much for helping to teach ppl the truth about so many things. channel is better than i thought and i am considering to support you guys

Автор Josh Wallbanks ( назад)
Kully Kan't Kuff, Kan Kraig

Автор Vitabrick Snailslime ( назад)
Well Hank, what you say is essentially correct but is not the whole truth. Fact is, your lens gets thicker as you age and so requires more effort to deform. Hence, even without having either a long or short eyeball your minimal focal distance will increase as you age. This can be offset to some extent by exercising your eyes (e.g. not always wearing glasses), but these muscles are really pretty small. I don't think there's the capacity to develop them in a Schwartzenegger type way.

Автор porcineChemist ( назад)
When I was about 6, I got my first pair of glasses and was told by the eye doctor to only wear them when looking at the board at school- not to wear them all the time. However, it was clear to everyone around me that I needed to be wearing them all the time, and eventually just started wearing them all the time because I like to see. We then changed eye doctors and I was then given glasses at the correct prescription to wear all the time. Now I hover around -9 diopters in either eye and can't see 3 inches in front of me without correction. As soon as I get the money, I'm getting some form of corrective surgery.

Автор Nofan Felani ( назад)
do glasses make you look cool?

Автор HalcyonSerenade ( назад)
I was diagnosed as slightly far-sighted by my eye doctor and given glasses pretty early on. Just a few years ago, they got lost and my backup pair were very ill-fitting, so I just stopped wearing glasses at all for months... once I was able to go see my eye doctor again, I told him what happened and that I haven't felt any pain or noticed any blurry vision and was really questioning whether I needed glasses...

...he told me I haven't needed glasses for years, ever since my head stopped growing, and the glasses were just to assure that my eyes' slight self-correction wouldn't screw up my vision during development. *I just didn't ask.*

Автор The Dynast Queen ( назад)
LIES! HE WORKS FOR THE VISION CARTEL AND WILL DO ANYTHING TO KEEP THAT RACKET GOING!! I'M ONTO YOU!!!!

Автор Trinity Spark ( назад)
What about people who dont need glasses but your optometrist still prescribes you reading glasses saying "this will help you" When in reality any time you used them they only made you feel a bit dizzy and things looked even weirder.

Автор SilverHeart ( назад)
This ties into my question. Does being too close to the TV damage your eye vision?

Автор Zack ( назад)
I do eye excercises...

Автор pokenei ( назад)
Glasses may or may not cause your vision to deteriorate, but TVs, and other electronic screens certainly would. My vision had gone from perfect to half-blinded in a short number of years. Now I can't even focus on things that are inches from my face without glasses.

I don't think we humans are born with defective eyes. If that's the case, imagine most soldiers in ancient times going into battle with blurred vision, they can't even identify friend from foe.

Автор Blacknight ( назад)
QQ:why are some people can blur and focus their visions at will?

Автор The Wolf On Fire ( назад)
so many comments with people saying this can't be right there eye sight constantly changes must be the glasses

yeah so does mine thats meant to happen I got my first pair of glasses 8 years ago my prescription was 50/50 with a blue tint for dyslexia I had those for half a year before the prescription changed and the tint stoped working
then I had a stronger prescription with a purple tint those worked for 3 months I then moved one to another prescription and a green tint that was made up of 4 different colours by the time they finished making them I couldn't use them
but didn't want to disappoint my mother who couldn't afford for me to get new colours I then spend the next 3 years with no glasses
I went back to the optometrist got given a 50/50 prescription again with out colour because I could read just fine at the time I had those for a month before I couldn't see my street sign from my house anymore because the prescription ended up being wrong again and I couldn't read again either and needed coloured lenses again. went back again a year ago and they gave me the same prescription as before. I've been both nearsighted and farsighted threw my childhood *im most definitely near sighted now because I can't see shit *if its far away its gone if its to close it gone if the writings smaller then large print its gone if writings small and far away it gone*
just be cause your eyes change doesn't mean its you glasses if you have glasses while your growing there going to change thats the whole point *your eyes grow with you* if your eyes aren't that bad *so basically your prescription isn't very strong and you can see pretty ok with out them* then they will change and hopefully you won't need to have glasses all the time if your on the higher end of the prescription range your eyesight might change but it isn't going to get A+ vision either.
don't think just because your eyesight changes its your glasses because it isn't its just the way things happen. *honestly thats what the video was trying to tell you*

Автор Eiffies ( назад)
When I was a child I had really bad myopia (I couldn't see at all past my elbow with my arm elongated) but now at 17 and I can see clearly up until my fingertips with my arm stretched out in front of me, getting your eyes checked regularly and wearing glasses/contacts does help in childhood and I recommend wearing your glasses if they've been prescribed they really help!

Автор DeltaBlaZe77 ( назад)
We all know the stereotype that nerds wear glasses, but I wonder if there is actually any evidence for correlation/causation

Автор Hasan Baidoun ( назад)
That, of course, doesn't include eye ruined by continuous 14 hours a day of computer screen habit ....

Автор David Stegman ( назад)
The thing is your eyes stop growing when your about five years old.

Автор Wafflez Puncakes ( назад)
I have myopia and my vision gets worse. My mum blames it on me reading so much, does anyone else think this could be true? I take my glasses off to read, or use bifocals if I'm in a place where I can't have my book close to my face. Also, I know the thing that staying in a lot worsens myopia, but I'm not allowed to go outside and I'm not just gonna sit on the back porch and stare at the neighboring building all day.

Автор Lars Lars Pantsonfars ( назад)
I loved this episode of S-eye-Show!

Автор Rod Savoyivok presents WunderLogik ( назад)
Paid for by luxottica?

Автор Tech Stream ( назад)
Natural procedures heal the eyes. check it out

Автор Treavon Ware ( назад)
i think glasses do ruin vision when I was a kid my eye sight was better after wearing glasses my eyesight became poor

Автор Daniel Zhan ( назад)
I am picking up my glasses soon! Being farsighted sucks at school

Автор Fida Aifiya ( назад)
meh. I've been on the same prescription for years.

Автор Dee Mash ( назад)
But the eye exercise thing really did help my eyesight get better a few years back but I, of course, don't do it now cause I'm super lazy. Someone tell me why....

Автор ROBLOX Hater ( назад)
What if you are "myopic" and "farsighted"?
Why I am asking is because I am both.


P.S. my right eye is myopic and my left is farsighted

Автор Emmanuel Namikaze ( назад)
Im calling bull shit.

Автор Someone Else1337 ( назад)
Square root of -16!!!!!








Get it? 4i? No? Ok.... I'll let myself out....

Автор Jorge Diaz ( назад)
so if i wear glasses and strenghten my prescription every year my eyes will get worse but if i keep the same prescription or dont wear them at all my vision will still get worse. and i cant see because my eyes are too long. so does this mean my eyes are getting longer and changing shape? this doesnt make sense

Автор Joyce Chandler ( назад)
#glassesarecool

Автор Muttzilla __ ( назад)
I got a contacts ad before this

Автор raja sekar ( назад)
no logic in it.. i can prove glasses ruin vision and under corrected glasses are better than fully corrected lens

Автор Phoenix ( назад)
I used to have perfect vision then one day In 8th grade I noticed I couldn't read the board from the back of the class
Why does this happen to a teenager?
I'm in 10th grade now

Автор Karla Co ( назад)
do a video about having Astigmatism

Автор hgdge ( назад)
So is it bad if i dont wear them but can still see okay? i mean i see better with them on but only for really far away stuff.

Автор Snow_Cherry _4909 ( назад)
I don't understand people who don't wear glasses because they hate how they look. I had a girl on my table do that once, and I didn't know that she actually had to wear them constantly in school

Автор Aquakiller ( назад)
But... wht if wearing it hurts my eye?

Автор Leonard Greenpaw ( назад)
so... if I go into space and thus have that increase in pressure inside my skull, press my elongated eyes forward... I would get better vision?

Автор VectorPlexus ( назад)
Glasses ruining eyesight? I never heard such nonsense, must be a murican thing...

Автор Ethan Santiago ( назад)
and also just look cool!

Автор John Paradise ( назад)
"And also just look cool!"

Автор I need to 3.141592654 ( назад)
yes they do

Автор PizzaPlansO ( назад)
Yes they do ruin your vision. I wear overnight contacts your supposed to put them on at night sleep in them wake up take them out and see better or good

Автор Megan McGrory ( назад)
great show but i noticed 2 things that were not touch upon in this episode. like how glasses are bad for you if you don't need them, how environments can cause weekending of the eyes and exercise can help.

Автор Ann Jelika Dionela ( назад)
I don't know what to believe anymore. So eye exercises are useless? And if vision can get worse, can it also get better? I have astigmatism 🙁

Автор Josie Delaney ( назад)
I have 20/20 vision but I have to wear glasses because my eyes are to weak!

Автор Anonymous ( назад)
But there are exercises for eyes and weak eyesight and they work in many cases.

Автор Stan R ( назад)
Why humans have bad eyesight?

Автор Stan R ( назад)
Why humans have bad eyesight?

Автор Persephone Hades ( назад)
As a kid, I would look up at the night sky and see the stars. A few years back, I noticed I couldn't see as many stars as I used to. I knew I was near-sighted, but I refused to wear glasses. Now, I can look up at the sky and see as many stars as i used to as a kid. What does this very valid anecdotal evidence suggest? Some people don't need glasses to correct their vision.

Автор Gaben McFry ( назад)
Im 15 years old and I have worse eyesight than my mother whose in her mid 40s.

Автор Bruce Dodd ( назад)
I am glad to hear this because of previous thought

Вставка видео:

URL 
Ссылка 

Поиск Видео

Top Видео

Видео

Seo анализ сайта