Farsighteness vs. Nearsightedness, An Explanation

In this video Mr. Swarthout goes over the difference between farsightedness and nearsightedness. Included is a description of why this vision problem occurs, what can and cannot be seen, the types of lenses used for vision correction and how the lenses change the path of the light rays entering the eye.
You can a listing of all my videos from my website, www.stepbysteps...

[@catherinefusini5237]

I appreciate human beings like you and your existence. Thank youuuuu

[@stepbystepscience]

That is very nice of you to say.
You can see a listing of all my videos at my website, www.stepbystepscience.com

[@xlulonax5768]

I'm nearsighted in one eye and farsighted in my other...im both and just found out today...its really rare

[@stepbystepscience]

Just like my wife. She can see out of both eyes but her brain only use the information from her left eye. She has no depth perception and can not light a candle!

[@maya4660]

Just like someone I know

[@mturrentine-]

I’m rare to i have fractal hyperopia TwT I don’t know the percentage but I think it’s like 6 or something

[@khyra8954]

I’m both in both eyes

[@clairalison8389]

I have the same condition. I just found out yesterday

[@marissaberlanga2124]

Thank you so much for providing such a straightforward video about the difference between Hyperopia and Myopia and how these vision problems can be corrected! The illustrations helped make it way easier to understand and visualize the whole process! Wonderful video, thank you so much!!

[@crazybanana6150]

It is kinda weird to think that people with far sighted have it harder to see going closer? Really, I thought if you go closer it would be better right?! P.S I am near sighted.

[@wassimnash]

Crazy Banana it is weird but you can control it. I am far sighted

[@snaidnietahi4654]

I am nearsighted as well. My eyes suck, they have since childhood. All I see is silhouettes at a distance without contacts or glasses. The really strange thing is although my eyes are still awful, the eye Dr. says my eyes have improved by about 30% in the last 10 years. I never did anything but rotate wearing contacts and glasses like I always do. I figured eyes got worse as you got older, not better. As far as "farsightedness" goes, it seems weird as hell to think that some people basically have it switched. I couldn't imagine how it feels not being able to see close up.

[@dbcnetwork6910]

Short sighted means nearsighted right

[@HS-eq3gk]

@@snaidnietahi4654 I'm meant to wear my glasses more (not all the time), but I have kind of grown to just live with not being able to see things that well which are far away, if I need to I'll wear my glasses, e.g. in school, weirdly I kinda like not being able to see things in high "detail" all the time

[@varunmangal9993]

bruh, by far the best explanation I found on this stuff. Finally after like three years I understand the concept.

[@stepbystepscience]

Thank you very much for the great comment

[@JamesByrne-vt8ns]

I intend to use this at the Lion's Club free Vision Clinic for the indigent to explain the concepts to our clients. Your narration and graphics are just what are needed to occupy them while they await their exam.

[@stepbystepscience]

Thank you so much for your comment, I'm glad this video will help people in need.

[@pm829]

Awesome, clear & understandable explanation. Thank you, thank you, thank you.

[@stepbystepscience]

You are very welcome.

[@christaaaa_]

Thank you so much for this video! I have been struggling with this concept and you made it so simple!

[@stepbystepscience]

You're so welcome, glad it was helpful!

[@levonderbrinkley3804]

I loved this! I am an educated 64 years old and have worn glasses most of my life, but did not know this information.

[@stepbystepscience]

So glad you learned something! Thanks for your comment.

[@galaxyvlogs6354]

im nearsighed

[@kylaxo3937]

Same

[@thegoldensea_]

Galaxy vlogs yeah, me too. Sucks to have unhealthy eyes. My brother were lucky to be the only family members to don't wear glasses

[@lizabell9461]

Me too but very minor but I’m still getting glasses because I have trouble seeing captions on a T.V

[@latewayzx8015]

Same

[@RodyToRick]

If you're nearsighted, your eyes are still healthy, unless if you have diabetes or cancer.

[@rogerclarke2233]

the eye looks like a stuffed olive
Blink💪

[@ryandoyle7664]

Best video i have seen on this topic. I work in optics and it is nice just to have a refresh.

[@stepbystepscience]

Glad you liked it and thanks for the comment.

[@shamimnaz1835]

I was very much confused with the concept of near and far sightedness but you easily clear it Thankss.

[@stepbystepscience]

Awesome and thanks for the comment. You can see a complete listing of my videos at www.stepbystepscience.com

[@adashofflavour3717]

very clear, simple and straight to the point. You can not beat this!! thank you very much.

[@stepbystepscience]

Thanks for your comment, it's much appreciated!

[@yordanosbeyene4538]

Thanks so much for this video, you got straight to the point and actually put lots of relevant and important information into each slide.This will really help me with my exam!

[@stepbystepscience]

Glad to hear, best of luck on the exam.

[@liliadiaz9338]

Awesome video! Straight forward and easy to understand. Mneumonic to help remember: Need Medical Doctors For Healthy Children. (Nearsightedness is the same and Myopia, can correct with Diverging lens. Farsightedness is the same as Hyperopia, can correct with Converging lens.)

[@stepbystepscience]

Awesome way to remember near and far sighted, will use with my students this year.

[@blairmoorer8460]

I really appreciated this clarification, especially with introducing the corrective lenses! Thank you so much!

[@stepbystepscience]

Thanks for the comment.

[@maeEllis-yx9tj]

You explained this topic so well. Thank you

[@stepbystepscience]

You're very welcome!

[@kartikPanwar07]

Your explanation was really nice and easy to understand gave me a lot of help for my exams 😊

[@stepbystepscience]

Hope the exams go well, thanks for watching and commenting.

[@sukantabhattacharya548]

Thank you very much.
Helped me a lot for my 8th grade half yearly examination.
The lens video is really cool to!
Thanks once again!

[@moretomedicine]

Simple, to the point, perfect! Exactly what i needed

[@stepbystepscience]

Glad to hear that and thanks for watching!

[@nathanelleeveillard7159]

I'm nearsighted.

[@stepbystepscience]

Me too!

[@bananaman7646]

Nathanelle Eveillard same

[@belchapantoja8617]

Same here

[@davevargo6256]

Thanks so much for your explanation. I'm taking a bunch of donated eyeglasses to Honduras this fall. We will fit them to folks in fairly primitive situations. The info you provided helps

[@stepbystepscience]

Sounds like a great trip, hope it goes well.

[@genesisnunez2928]

Dave Vargo WOW... I'm From Honduras

[@imad7995]

Great and clear video ! Would love if you could make a video on "Electromagnetic Spectrum" too, whenever you find the time !

[@kristinedemark4828]

Thank you! This really helped my classes understand this concept!

[@artpop4976]

My eyegrade is 2.50l and 1.50R. why does my eyes are so sensitive with light?

[@boakyeduan563]

Great explanation and animation!!

[@stepbystepscience]

Glad you liked it and thanks for the comment!

[@NS-ej9jw]

Is there any way u can fix near sidedness

[@stepbystepscience]

Glasses or many there are some eye exercises that you can do. You can see a complete listing of my videos at www.stepbystepscience.com.

[@maya4660]

@@stepbystepscience did he way I didnt hear him that a goooood answer

[@alexisprice8574]

Thank you for making that very clear! That helps a lot for my anatomy test !

[@stepbystepscience]

Hope the test goes well. You can see a listing of all my videos a my website, www.stepbystepscience.com

[@Iftikharali]

very good explanation. Thank you.

[@stepbystepscience]

Thank you for watching and commenting.

[@calciclasses]

Superb explanation sir... Thanks a lot

[@stepbystepscience]

You are very welcome.

[@thearatha2767]

simple explaination and easy to understand. Thank you very much.

[@stepbystepscience]

Glad you liked it and thanks for commenting.

[@avamk9580]

your videos help me so much!! thank u x millions

[@stepbystepscience]

Great they are helpful for you and thanks for commenting.

[@BlueUKLouis]

Beautiful, thank you!

[@stepbystepscience]

You're welcome!

[@zaramahajan8603]

Thank you so much! You are a lifesaver.

[@stepbystepscience]

Glad to be of help!

[@lindseylauer3128]

Get explanation. Thank you for making it clear and simple

[@stepbystepscience]

You are welcome! Thanks for the comment.

[@mr.perfect8839]

Amazing video...helped me a lot for my preparation

[@elizabethnguyen7677]

Very helpful video, thank you.

[@stepbystepscience]

Step-by-Step Science
• 1 second ago
You are very welcome, thanks for commenting.

[@mosirapilivi]

Awesome straightforward explanation!

[@stepbystepscience]

Thank you very much for the positive comment.

[@dmlx4209]

I’m nearsighted, whenever Im gaming I cant see far away and get get a lot of pain from straining/squinting hard to try and see who’s there.

[@stepbystepscience]

Bummer

[@ravishmirividahara8000]

Its was really good and can you teach how to correct that sightnesses by drawing line diagrams

[@stepbystepscience]

I believe that is in the video.

[@meetan-]

I am 70... Now only I understood these terms... Thanks

[@stepbystepscience]

You are welcome.....Better now then never!

[@rajsoniminde9578]

Beautiful video it was crisp and clear to understand.

[@stepbystepscience]

Thanks for the comment. you can see a listing of all my videos at www.stepbystepscience.com.

[@zakarovlina]

You are such a good teacher

[@stepbystepscience]

+Moussa Harb That is such a nice comment. You can see a listing of all my videos at my website, www.stepbystepscience.com

[@loreaver3882]

Step-by-Step Science yeah this guy reminds me of one of my teachers

[@beaver_squeezer4226]

Very well explanation & great video, wished my optician manger was you.

[@nandithaiyer5765]

Very nice explanation sir

[@stepbystepscience]

Thank you for the positive comment.

[@indianchannel3699]

Its very Helpful thanks for making this video now I understand more about eyes.

[@stepbystepscience]

They are very interesting! Thanks for commenting!

[@justalittletoxik7383]

this actualy helped me ALOT with a science exam i have soon thank you

[@stepbystepscience]

+Eliam Tice Great, I hope the exam goes well.
You can see a listing of all my videos at my website, www.stepbystepscience.com

[@yammilevargas430]

HOLYSHIT. I FINALLY FUCKING GOT THIS! WHY DIDN'T I FIND THIS VIDEO SOONER?

[@JoseTorres-fy2nb]

Really helped me understand eye condition more clearly! I

[@maajidthanksforyourhelpqee1072]

Hi I'm near sighted, and I don't want to wear a glasses, please can you tell me something better glasses thanks.

[@hbsbb1]

Terrific video! Really clear description! Thanks

[@umarecol81]

i have a question about a person with myopia : so they put concave lenses so they can get a clear vision. But what happens if the eye accumulates WITHOUT a concave lens when the object is near? (I know that the eye without the accommodation with an object that is near makes a clear vision, but when the eye accomodates does it make the vision worse? (because there is more breaking of light?)

[@13thChip]

Can the diverging lens used to correct myopia cause eye muscles to strain more when reading at short distance?
I am short sighted and started recently experiencing a problem where when I wear glasses to see far objects, i cant focus on small letters while reading. I have to look outside my lens or take the glasses off and the small letters become clear even at short distances. Do i have hyperopia and myopia as well?
This is a recent experience and I never faced this problem while wearing glasses to correct my short sight. I have been wearing glasses to correct short sight since I was 8 years old and now I am 43.

[@sunshinealtheabelizar872]

Thank you so much this help me alot

[@stepbystepscience]

You're welcome!

[@itsmebeyonder]

I have astigmatism in both eyes but only my left eye has nearsightedness. I also develop a condition called lazy eye.

[@stepbystepscience]

My wife has a lazy eye also.

[@itsmebeyonder]

@@stepbystepscience oh. Lazy eyes can be extra annoying, even by wearing an eyeglass doesn't fix it.

[@prasannakapu3018]

Well explained, thank you

[@Shawnblue]

I like your presentation. I have myopia.

[@sangeethstanly7618]

Its very clear explanation sir.thanku.

[@stepbystepscience]

You're most welcome.

[@shabnamkavakeb648]

thank you very much

[@stepbystepscience]

You are very welcome.

[@marilup9657]

Thank you!!! Easy way to understand

[@purushothamreddy1206]

That's good ur explanation is marvellous

[@m320d3]

Thank you 🙏🏻 the video helped me so much!!!

[@stepbystepscience]

Thanks for watching and commenting

[@monasawant2697]

Thanks it helps me to learn more

[@bereruter0]

you say the muscles around your lens can change, so you can naturally cure it then? if you train that muscle?

[@yeshabie1122]

I can only see the things if near but i cant see or read anything if far ??

[@stepbystepscience]

very interesting.

[@Kem9s]

Thank you 🙏🏻

[@stepbystepscience]

You’re welcome !

[@gabby5211]

this will help me so much in gsat thank you

[@jakleenyaqoob5515]

great explanation. is there a way to fix nearsighted and far sighted without wearing glasses. i'm nearsighted and everytime I wear glasses, it makes my vision blurry :/

[@Crazybrony-bi6zg]

Well, are the glasses correctly prescribed?

[@kwabenaboakye1367]

Thank you for the video! Helped me so so much...

[@muhammadishaq1596]

nice work ...thanks

[@stepbystepscience]

You are very welcome, thanks for the comment.

[@ezra2180]

The best explanation

[@kunalkanase7877]

Thank you.

[@stepbystepscience]

You are very welcome, thanks for commenting!

[@ouss991]

great explanation

[@ruhidhiman6446]

Tnx ...

[@stepbystepscience]

you are very welcome

[@lyndsayastor9668]

thank you

[@stepbystepscience]

You are very welcome, thanks for watching and commenting.

[@loganallred4589]

I enjoyed this video, it was helpful. Thank you.

[@carl108]

Can't like this enough!

[@stepbystepscience]

Did you subscribe, that would go a long way.

[@renzfiesta3601]

I'm 10 y/o I'm near sighted (a little) and I'm doing some eye exercises and it work for a few weeks :)

[@stepbystepscience]

Renz Fiesta Hope it helps.

[@renzfiesta3601]

Step-by-Step Science yes it helped me a little I will do more eye exercises to restore my vision!!

[@kumarikumari4766]

Thanks a lot 🌺

[@stepbystepscience]

You are very welcome.

[@syedabrar3477]

Diagram for the 1st case is wrong........Eye is able to bend parallel light rays easily but isn't able to bend the diverging rays coming from the near objects.
As a result, it is able to see far object clearly as they are focussed on the retina whereas it can't see the near objects as it isn't able to converge them sufficiently due to low converging power of the lens.

[@dr.kallolchakraborty]

that's very nice xplanation

[@bashairalhidri5955]

Thanks

[@stepbystepscience]

You are very welcome, thanks for commenting.

[@priyalinu2721]

Very good explanation sir 👍👍

[@shinygengar2115]

Both?

[@vikasputla]

Thanks for the video!... It helped me.

[@stepbystepscience]

Thanks for letting me know

[@khosrosoltani3758]

Thank you dear...

[@kairyhwang6661]

i am near sighted.. i sight is blurred seeing things 5 meters away..

[@amarjeetkumaryadav5775]

Nice

[@stepbystepscience]

Thanks

[@Trap_Or_Die_84]

My doctor told me I may need plus ones so does that make me farsighted or nearsighted?

[@calciclasses]

Hypermetropia

[@pelhamh]

Well done

[@stepbystepscience]

Thank you.

[@trevorsmallwood6899]

thx it really helped do my homework :-)

[@AdminHouse]

You can experience "temporal" farsightedness right now! 1. Lay down in a bed
2. Look at one object then another very fast.
3. You will eventually experience Temporal Farsightedness!

[@stepbystepscience]

Wow, freaky!

[@AmitKumar-lj4dm]

What if person having both. But he can see things clearly in between.

[@stepbystepscience]

I know someone who has both, they can see out of both yes but their brain only uses the information from one eye.

[@nathanrumpf5660]

Great video. Thanks!

[@stepbystepscience]

You are very welcome!

[@gnarleypunkroker5]

out of curiosity on the image you have - could you be so near sighted that a converging lense would spread the light rays out so far they dont contact the lense bit of your eye, therefore making them not work to solve the issue?

[@stepbystepscience]

Do you mean a diverging lens??? If they are the wrong strength they they do not work. You can see a listing of all my videos at my website, www.stepbystepscience.com

[@ONE-pg7wd]

Very informative

[@stepbystepscience]

Thanks for commenting.

[@ONE-pg7wd]

@@stepbystepscience np🙂 whats your view on plus lens therapy? Do you think it can work?

[@AlcaraMariizz]

very helpful!

[@stepbystepscience]

Thanks for watching and commenting.

[@misslolipopluvscandy]

thanks!

[@stepbystepscience]

You bet!

[@sanariax]

Just loved the lecture, ❤

[@stepbystepscience]

Very nice, thanks for letting me know!