ASTIGMATISM | Optometrist Explains

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Heyo Antonio!
I hope everyone is staying safe in the comfort of their own homes! If you don't know what to do with the spare time that you have, why not learn something new and interesting?
Today we cover the topic of astigmatism.
It is a very tricky concept to grasp, but if you familiarise yourself with the principles that I lay out in this video it should be quite easy to understand.
Stay tuned for more content as I will be working very hard during these times to get as many high quality videos up on this channel as possible.
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Follow me on instagram! @antoniohong
/ antoniohong_

Опубликовано:

29 июн 2024

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Комментарии : 112

@SometimesMakayla 2 года назад

Thank you! I have an astigmatism with a cyl of -5.75, one of the worst my optometrist said he's ever seen, so I've been looking for a video with a better visual of what astigmatism is to better understand 😅

@strong1134 2 года назад

feel bad for you, what axis is yours ?

@futureiitian7077 2 года назад

i also have -5 cyl😪🥺🥺🥺

@sajanarora5067 2 года назад

Can I ask you something

@futureiitian7077 2 года назад

@@sajanarora5067 yes yes bro ask

@sajanarora5067 2 года назад

@@futureiitian7077 not here personally

@DrUnicorn602 9 месяцев назад

was struggling with astigmatism. You explained it in such a beautiful manner. Million Subscribers You deserve boy!

@MsTracyBennett 8 месяцев назад

Great video and explanation! I'm an optician educator in NC. You're awesome! I'll be linking this video in my lessons. This will definitely help my students. Thank you for what you do!

@loughrey101 2 года назад

Mine was never corrected in my myopia prescription and I always wondered why I had this double text Vision even just after getting my new prescription glasses, I had always thought that maybe the optician didn't give me the correct prescription

@wiZZelify Год назад

I have the same problem...after gating my first glasses my astigmatiam vision is stil there...i don't knkw what to do...

@christineribone9351 10 месяцев назад

The 3D example is excellent! Much better than the football concept. Thx!

@tubesurfer4331 2 года назад

Thank you for explaining the word origins.

@humam2408 6 месяцев назад

One of the best explains i watched so far

@OksanaShevtsova Месяц назад

So helpful! Thanks!

@v.krishnabalan3660 Месяц назад

Best explaination 🎉🎉🎉

@kevkonk Год назад

I have astigmatism in both eyes, corrected by +1.50 cyl in both eyes, 165 and 10 degrees. Sph plano on both. Reading + 2,75 I have recently had varifocal/ progressive glasses, but wondered do they give me any extra distance from the top as it varies to the bottom?

@Kaibaseto678 7 месяцев назад

Thank you so much for the explaining. How can I tell if an astigmatism is with or against the rule?

@SarahOnuora-pt9om 6 месяцев назад

Thanks Antonio

@RaquelNavas 6 месяцев назад

I was diagnosed with astigmatism on November 11th

@sameerabdulshaik1863 2 года назад

Awesome sir ,was searching for this

@AntonioTheOptom 2 года назад

👍

@rithuamotivationspeech 3 месяца назад

Nice explanation sir🤗 I am also studying optometry third year.Thank you very much🤝 this video is useful for me 😮toricylindrical that topic is difficult. Now make astigmatism easier to understand😍🙂

@Amanitheair 4 месяца назад

Thank u I have astigmatism with cyl of -5.0

@LeBuick 19 дней назад

Want to talk about weird eyes, I am nearsighted in one eye and farsighted in the other. And, both eyes have mixed astigmatisms. The prescription I wear is the one where my two eyes work best together, but if I cover either eye and just use one eye things are out of focus. Incredibly, because of how the brain works, I actually have 20/20 vision (and depth perception) when my two eyes work together. The weirdest part is I never knew this about my eyes until I needed reading glasses. Until then, my far eye saw far and my near eye saw near so I never knew I had a problem.

@mrzee6033 Год назад

Thanks Mr Antonio . Qestion : in with the rule astigmatism , why do we correct it with a plus lens axis 90. form your explanation, the curvature x 90 is steeper and it focuses the light before the retian ....

@user-xo7qg6mf8r 3 дня назад

U got my subscription after this video

@linahtm7695 2 года назад

Thank you so much

@Dr.sharma9509 Год назад

I m Indian medical student. Nice explanation 👌 🙏

@zynthos9 Год назад

If you have ONLY astigmatism and not myopia or hyperopia, is the distortion in your vision the same at all distances? Or do things closer up look less distorted than things farther away due to the pure astigmatism? Edit - he answers this in a comment below

@adamkover3276 2 года назад

good stuff

@yongyong__365 Год назад

우와 ㅎㅎㅎ 난시를 이해하는데 도움이 많이 되었어요. 정말 감사합니다 :)

@thejasnaik238 Год назад

Nice sir ❤ fan from india

@Odank 3 года назад

Great video! If the astigmatism level btwn two eyes is more than .50, is it possible that a person has a hard time with eyeglasses prescribed with the proper Rx? I found it quite difficult to get accustomed to a higher -1 cylinder in one eye and a -.25 in the other when viewing though both eyes, even after a time of using new glasses.

@AntonioTheOptom 3 года назад

Yeah the cyl difference can be a challenge. I have about -0.75 difference in astigmatism between the two eyes and it was hard for me to adjust to glasses initially too

@SometimesMakayla 2 года назад

Is this why I've always hated glasses? My good eye has no astigmatism and my bad eye has cyl -5.75 😅

@wiZZelify Год назад

@@AntonioTheOptom what are you seeing with glasses in ajustment period?...i se blur at distance ...image has an easy doubled form...

@decadewgame9802 6 месяцев назад

what is your prescription ? @@AntonioTheOptom

@_dyson Год назад

I'm 17 and i diagnosed with astigmatism -3.25 with no spherical power in one right eye and -3 cyl with -0.75 spherical power in left eye . My visual acuity without glasses is 6/18 in right and 6/24 in left . I see blur from left but not with left . I have problem in seeing far distances. I got glasses but after two days i see lines from bulb

@wiZZelify Год назад

How are you doday? I recently got my forst glasses for astigmatiam...and my astimgatiam vision is stil present...

@yakubuabdulmalik6688 Год назад

I'm preparing for my NCLEX so I every point I can gather but the background sound kinda disturbed me a bit. Thanks for the information.

@wiZZelify Год назад

I have binoculoar myopic astigmatism ...i got my glasses...i have my glasses for 4 days now...my problem ia rhat my astigmatiam vision is stil there..blury far vision...and a little doubled vision...i don't know what to do...Or is thia normal in ajustment period?

@nareshkachhwal5019 11 месяцев назад

Hi Antonio, I am 29 and I have cylindrical -3.5 both eyes with different eyes. I am diagnosed with blue dot cataracts which are in developmental stage. Does the cataract surgery remove my power and axis both? I want to do away with the axis because the specs won’t suit unless Pupiliary distance is correctly measured. Waiting for your response. Thanks

@Apratim98 4 года назад

In the diagram you have shown two focal points from vertical and horizontal meridia...but doesnt it actually is a line of foci for each?

@AntonioTheOptom 4 года назад

Thanks Crazy for concepts for asking! You are completely right! Sorry for the confusion, my 3D ray drawing needs a bit of work I see :S

@jyodhish4306 2 года назад

I think he's right... They are focal lines when u combine both until then they are focal points for each meridian... Isn't it?

@KrstnaSchroeder 2 года назад

What about astigmatism with presbyopia? My vision is perfect ...sph PL - OU, -0.50 cyl OU, 177 OD/ 33 OS, add +2.00 OU. But i don’t understand the +2.00 as everything is clear at all ranges, just letters and numbers are ghosted/layered. Why the add???

@shafio2 2 года назад

thank you Hong. ni hen hao

@chelseachua6265 2 года назад

hello! :) thanks for this video! btw may I know what background music you used for this video? thanks!

@infopc-arieh6372 Год назад

Excellent ... well done ...

@telugufuntrolls7905 3 года назад

Sir please explain about sturms conoid I'm unable to imagine sturms conoid in reality please explain Antonio sir

@novarolel1490 Год назад

Can astigmatism make double vision?

@bjgarage 3 года назад

how can we correct astigmatism in the concept of geometric optics? thankyou for your answer! :)

@AntonioTheOptom 3 года назад

Well, every optical system has its flaws so you can’t ‘eradicate’ aberration, and in the eyes astigmatism is a combination of the corneal and lenticular curvatures. So the most practical way for humans to see better is to wear glasses or contacts!

@bjgarage 3 года назад

@@AntonioTheOptom thankyou again! :)

@johnmitchell8925 Год назад

I had RK back in the 90s. Bad idea.The doctor said it was safe and effective. He lied😵‍💫😭

@Acenis 2 года назад

Is astigmatism present at every distance? I can see computer screen crisply without glasses but farther away I see double edges of objects.

@AntonioTheOptom 2 года назад

Yeah astigmatism is present at all distances. Further distances generally make the letter sizes much smaller so the effects are amplified

@zynthos9 Год назад

@@AntonioTheOptom Hmm. So then with purely astigmatism and no myopia, you still can see more clearly close up? If you make the letters on the computer screen small at close distance, do you then see double edges even at that close distance?

@AntonioTheOptom Год назад

@@zynthos9 precisely

@hafidfazili370 2 года назад

My both eyes have a cylindrical number, 1 and .75 and I even wear glasses, but I don't know why objects still appear blurry all the time, especially shiny objects, please help me doc.

@wiZZelify Год назад

How are tou now? Did yor vision geting better?

@qureshiizainab Месяц назад

Thank you 🤧😭 4:33

@339gabriel Год назад

I’m 27 years old and just diagnosed with this thing. Everyone at the Eye doc was asking how I went so long without wearing glasses

@AntonioTheOptom Год назад

😲

@nirmaladevi311 2 года назад

Tell about retina

@amandaallen9460 Год назад

I have astigmatism of -2.75 I think as of last year.. this years exam is set for 2/11

@drz2803 2 года назад

Is it normal to have eye strain looking up close with toric contact lenses? My eyes are relaxed looking at the distance but I struggle with reading books etc.

@AntonioTheOptom 2 года назад

It’s normal to feel strain up close in general regardless of contacts. But can be exacerbated with an incorrect CL prescription

@drz2803 2 года назад

@@AntonioTheOptom I still have my old spherical contacts and with them I didn't have this issue ;/

@murphmurph2124 2 года назад

Okay thanks I'm off to the optometrist

@zedanhejazi5693 2 года назад

I used my lense for the right eye on the left one and the left one on the right for 8 days😂 My right eye perscrip is: +1.75 Cyl : -1.25 Axe: 180 Left eye: +1.5 Cyl: -0.75 Axe 180 My question is, did I damage my eyes? It was a mistake and I felt it because I was seeing lines in one eye because the lense wasnt sitting good on my eye😳 Thank you for your answer in advance

@awesomeFake Год назад

your left eye will be affected because of over prescribed.

@felipearroyo526 2 года назад

I have myopic astigmatism

@Krishna13847 2 года назад

But what is the root cause of the the increasing curvature astigmatism? How to prevent or maybe reverse it? Please reply. And also what is the root cause of Hyperopia?

@ibraahemnabeel Год назад

can be corrected using lasik or any modern laser procedure provided that you qualify for it .

@AlcoveShadow Год назад

No eye doctor knows. They just guess. I believe it is lack of Vitamin A (Retinol) and B-Vitamins.

@ArAsDeCos 9 месяцев назад

There isn't enough research. Could be genetic, could be an accident during development. Who knows.

@manankeshwer328 Год назад

But an eye can have both Myopia and Hypermetropia at the same time due to loss of power of accommodation

@ockertoustesizem1234 9 месяцев назад

that's presbyopia

@beamary777 2 месяца назад

What is AXIS?

@jyodhish4306 2 года назад

Hi... I have a qn... Does the image turn again from upside down when it goes past the focal point?

@AntonioTheOptom 2 года назад

It would turn upside down beyond the focal point !

@jyodhish4306 2 года назад

@@AntonioTheOptom I mean turn back normal?.. cuz normally the image falls upside down...right?

@jyodhish4306 2 года назад

And if it does... Do compound astigmatic people see upside down at the circle of least diffusion?

@jyodhish4306 2 года назад

Sorry mixed astigmatism .😅

@fatimarassmi527 23 дня назад

Traduction francais merci

@billbauer9795 Год назад

what is the relationship between astigmatism and keratoconus?

@syzygy4365 Год назад

I think I can answer this one. My son's eye doctor thought he might have had keratoconus a while back, and mentioned how important it is that he doesn't rub his eyes too hard. If you have a stigmatism, you're more tempted to rub your eyes and risking damage to your cornea.

@billbauer9795 Год назад

@@syzygy4365 Shocking. I have keratoconus, and now I suspect I got it as a result of rubbing my eyes. When I heard that this is a possibility, I hoped that my source was wrong. The more doctors I hear agreeing that rubbing one's eyes can be dangerous, the more likely this to really be the case. I can''t believe I gave keratoconus to myself...

@TeddyBear-su9lz 2 года назад

My astigmatism has always been very high because of my small eyelids pressuring the cornea Astig:200

@ankitsahu5871 Год назад

Kitne time tk astigmatism ne pain kiya apki eyes ko

@joowlee 4 года назад

석주야 배경음악이 쪼오끔 큰거 같아 목소리에 비해서~

@nickel-rb5is 3 года назад

If someone had sph +.25 cyl -3.75 180 would that be considered nearsighted or farsighted? Like would they see better close up or far?

@AntonioTheOptom 3 года назад

Neither! Astigmatism affects all ranges

@nickel-rb5is 3 года назад

@@AntonioTheOptom Oh ok. People only talk about myopia and hyperopia, I didn't realize astigmatism was neither

@Mlgamingmiya Год назад

Is astigmatism danger

@Woodman-Spare-that-tree 6 месяцев назад

My optician told me that astigmatism means that your eye is shaped like a rugby ball instead of like a football.

@jimmytu1 3 года назад

I shoulda watched this video before enrolling. Oh my god I don't get this at all I'm fucked1!

@AntonioTheOptom 3 года назад

😂 it’s easy once you get your head around it!

@Chilenodude 2 года назад

Can we be best friends? I have astigmatism 🥺🤓

@ArAsDeCos 9 месяцев назад

Is astigmatism genetic? Or a developmental fault?

@Devra380 2 года назад

Sir, when i look straight my vision is perfect but when i see nearer things and nod my head then they seem to stretch along with the movement of lens.. Is it normal?