Why Astigmatism Causes Blurry Night Vision (Home Astigmatism Test)

[@craftinapahantasiaartist]

Oh my gosh this explains so much, I have astigmatism and I’ve noticed that at night everything is so blurry (already explained my current vision to my eye doctor). Thank you so much for making this informational video!

[@minimasuo]

What great timing! I had cataract surgery a month ago and can already see so much better, but I was told I do also have an astigmatism and now I understand what it is and why it's worse at night! Thanks so much for another informative video!

[@angeloishere4006]

I have self diagnosed myself with astigmatism after I finally decided to look up the reason why people see streaks of lights at night from cars, light poles etc… come to find out most people don’t see those rays of light and it’s a condition! One thing to note tho is your vision doesn’t have to be blurry for you to have astigmatism, I don’t have blurry vision but I do have the long streaks bending and stretching out.

[@videofrat3115]

You couldn't have explained this better. I have astigmatism which developed very recently after a comsmetic eyelid surgery. And at night is terrible

[@julilla1]

I've gone to the same doctor for 20 years now, and some years they say they think I have a slight astigmatism, other years they don't. So I don't know, lol. I think I'm just so myopic, everything is a bit blurry, even with correction. Man, I can't wait to get cataracts!

[@DrEyeGuy]

I have patients tell me that all of time... can't wait to get cataracts so they can get cataract surgery. 😁

[@ΙωάνναΑναγνωστοπούλου-υ3ξ]

omg 100%

[@mleii1169]

So I've already been diagnosed with Astigmatism and I noticed a weird thing about it so I am wondering if I have something else. And your video made it even clearer to me that what I'm noticing exists. Using that dial test the horizontal lines are the dark ones that are very clear and the horizontal ones are blurry. But at say book distance away, on my phone, the vertical lines are the ones that are dark and sharp but the horizontal lines are the ones that are blurry. Which has me wondering why am I seeing this as it makes no sense if it's the shape of my eye I would expect the bluer to be the same direction no matter the distance. What might cause that? Also am wondering about my glasses prescription as perhaps it's the thing that is making my eyes so tired during the day as I'm much closer and looking at a computer all day. But the prescription was set for the distance based upon a chart. That and pretty much all of my vision issue is in the cylinder as the sphere is either around .25+/- or plano. What might be causing this as perhaps I'm misdiagnosed? I've asked my eye dr about it but he says he doesn't know why. Me, engineering mind, has me really puzzled as to what is going on here as it makes no sense. It makes me wonder if my vision issue is somewhere else in the system. What might I talk with my eye Dr to help make sense of this?

[@mleii1169]

If it helps, my current prescription is at around OD +.5 sph -3.25 cyl 95 axis and OS +.25 sph -3 cyl 77 axis. I'll also add that night time I don't see all these lines mentioned or shown. It's mostly just text that's an issue for me, even looking out the window without glasses or at the TV (again except for text) it all appears most clear to me.

[@mleii1169]

Curious if you've had any patients with a similar issue and how you handled their prescription. I'm noticing the zone for where it seems to switch is right around where I normally have my monitor distance. Perhaps me using computers for the last 40 or so years has caused some other thing to occur/change with my eyes or some part of my visual processing.

[@Max-fq9le]

I have Astigmatism but I’ve healed and I just got Astigmatism by looked at the Astigmatism Test 😢

[@videofrat3115]

About a year ago i had cosmetic upper eyelid surgery (ptosis repair, upper blepharoplasty, canthopexy), before that i had absolutely perfect vision. Ever since the surgery i see blurry at night. I went to 3 different ophtalmologysts and told them "i see blurry at night after my eyelid surgery" they all dismissed me telling me "you are in your 40s so you are just getting old because of hyperopia and it has nothing to do with the surgery". But i knew this was not the answer. How could i just get old overnight after a surgery? Turns out i finally realized i have astigmatism -0,75 on top of my hyperopia, which was caused after the surgery. And i read articles online that prove that astigmatism can be caused by upper eyelid surgery, so there is no doubt in my mind. now. The way you explain this video is exactly what happens to me. Maybe 0.75 is not a lot but for me, who never had anything, it feels like a lot.

[@kkevinj1]

How many people got astigmatism AFTER glasses??

[@PwCollabe]

Me

[@YouTube_user_G1]

Me my vision was good -0.25 now iam -6

[@kkevinj1]

@@KZbin_user_G1bad vision habits=bad vision, but the good news is you have trained ur eyes to be a master at reading distance lol

[@tushardwivedi7989]

Me

[@YouTube_user_G1]

@@kkevinj1 fr I use phone for 16h straight haha

[@A_Man_Named_Mark]

I just realized recently that I have this. But I have really good vision (day and night), and when I get halos and streaks, I just focus where I want to see (best way I can explain it), and it goes away.

[@Sarahde11]

If I have astigmatism how inaccurate will my vision be with glasses that don’t correct astigmatism? When I compare my glasses that correct astigmatism vs my glasses that don’t, things seem different sizes and shapes. Things appear more smooth and appealing without the astigmatism correction. Everything looks dark and too harsh with astigmatism correction. Also if I turn my head just a little whatever I’m looking at bends.

[@EBeverly-gv4ln]

I didn’t even know we could get glasses for astigmatism. Huh.

[@lemolea9571]

​@@EBeverly-gv4ln My glasses mostly correct for astigmatism and a tiny bit of myopia. They're quite thick around the edges and thin in the middle. Very helpful, everything is blurry otherwise but my eyes are fairly bad.

[@rattylol]

I have night myopia and this traffic thing happens to me, hard to drive. I also find dusk really challenging for vision.

[@LyviLou]

As a FedEx Driver with really bad astigmatism that my glasses/contact don’t really help with it makes my job so difficult when I’m driving at night!

[@EBeverly-gv4ln]

I learned to look at the fog line when headlights mess me up. Also try driving with the interior light on or using your phone to shrink your pupil. Mostly impractical and still not so safe but Helped me a ton. Good luck!

[@animeotaku1773]

What are your recommendations for someone who still has issues seeing at night even with lenses? I have seen my eye doctor, but they just say it's a low grade astigmatism (1.00 vs 6.00). Is it common for lights to still look like stars at night even with glasses? Glasses make it a bit better but I sort of expected the scattering to go away completely when wearing glasses at night, given how low my prescription is. I am just curious because so far my doctor hasn't suggested specialized testing but I am still having vision issues at night due to light scattering.

[@bendietrees]

Try to upgrade the material your lens is made out of. As an optician I put most of my customers in trivex if i can. It's clearer. You may be in basic polycarbonate lenses which aren't as crisp due to how they are created. You want to make sure you have a very good premium anti glare coating as well. They all have different strengths. Crizal Sapphire HR is one of my favourites as it is one of the best with reflections.

[@animeotaku1773]

@@bendietrees Thank you for the suggestions I really appreciate it!

[@MrCheffery]

This might explain what's going on with my vision...

[@melissacopeland5147]

First to comment 😊.....i was diagnosed a couple years ago with astigmatism 😢.....my eyes be very blurry .....also i have severe dry eyes 🙏.... thanks for sharing this video 💯😊💕

[@DrEyeGuy]

Thanks for being the first! 🙂

[@LorettaBallejo-op2tq]

So does that mean it will get worse and will need to keep renewing meant replacing my glasses often ??

[@DrEyeGuy]

No, not necessarily. Astigmatism can remain stable for years.

[@natipanzeter]

oh gosh, I've been noticing the blurriness at night. driving on a highway is painful. playing tennis a night very difficult. the dial test was all blur and bold 😅 gonna check with the doctor

[@lees_box]

I see everything doubled. I first noticed it only on very fine text on the screen but it's gotten progressively worse. Glasses fix it. I see things nice and sharp at a distance (only close stuff is actually blurred which is just age-related normal stuff) but yea everything is slightly doubled-up whether close or far.

[@DrEyeGuy]

Thanks for sharing!

[@Joinabhilash04]

I see double vision after ICL surgery, closing my right eye I see the shadow on the left side, closing my left eye I see a shadow on the right side of any bright object especially in low light or Indoor lighting conditions.

[@pwushiecore]

Wait when i focus on it, it gets like a shadow or something over it and i cant see the thing on the screen. İt sometimes happens randomly when im just minding my business irl at the most random times but i can force it to happen when i focus on something actually.

[@saipriyaprabhaji5699]

Hello doctor, I have checked your video on diplopia. But I'm not sure what's causing my double vision to worsen over time. My glasses point have been decreasing over time and I'm concerned about it. Also I have hypothyroidism. I'm only 23

[@DrEyeGuy]

When you get new glasses with your new prescription, does it help the double vision?

[@saipriyaprabhaji5699]

@@DrEyeGuy yes doc, my vision is clearer with the prescription glasses

[@DrEyeGuy]

@@saipriyaprabhaji5699 Do you know what your double vision is caused by? Is it from an increase in astigmatism? If so, it's hard to say what make a prescription change in a person. it's possible you haven't hit a stable point in your prescription yet.

[@saipriyaprabhaji5699]

@@DrEyeGuy Thank you very much for the detailed response. I'm from India and love your videos! My point keeps fluctuating every 6 months or an year. I don't think it's astigmatism because as you mentioned in the video, i did self-exam of my cornea and the shape is near spherical. I seem to be having advanced double vision in one eye only since two years while the other was normal but it's been a month that I see the same thing happening In other eye too!

[@saipriyaprabhaji5699]

@@DrEyeGuy Also, I'm hard of hearing. Do you think it is in some way related to ears? I study a lot and stay on computer for long.

[@tadanemarkbaker7157]

Am 13 years old and I recently noticed that my right eye was blurry when I was doing a eye test at my school for a medical check up every hear I think the cause is because am always on my phone everyday and should I go to a doctor??

[@bendietrees]

Yes go see an eye doctor

[@MartinNeep]

The reason that astigmatism improves when the pupil stops down, is because the focal lines steepen. This makes the circle of least confusion smaller for a given distance away from the retina resulting in better acuity.

[@kkevinj1]

Trying to figure out how diet change fixed 80% of lasik induced astigmatism with a few other aberrations, some days a true 20/20 in an 20/25 to 20/30 eye. I quess its the new and improved tear film with no added inflammation from bad diet

[@tomato3988]

As someone with only mild astigmatism, I think visual snow affects my night vision significantly more

[@JillianShanahan]

Here’s one for you! I had astigmatism soooo bad. When I was pregnant with my last kid, it went away. They said it would come back it was just from swelling (pregnancy). But they’re still good! Ever hear of that?

[@DrEyeGuy]

Wow! I have seen vision change for the better and worse from pregnancy... but I've never seen astigmatism go completely away. That's awesome! Hopefully it never comes back.

[@JillianShanahan]

@@DrEyeGuy Having it gone is LIFE CHANGING.

[@ranjitdhiraj9974]

Thankyou 👍👍👍👍

[@redblue40rc33]

That's what I got past several years...dusk dark was getting bad, like thinking I was seeing things in the woods or on highway at night....now I have corrected lenses for it and bifocles..I'm 48, been wearing glasses for 38 yrs.....it's a change to have these special scripts for stigmatism.....but what can I do, I can see clearly up to a mile like nothing now day or night 😊

[@archieinfansoherradura75]

What is the treatment of this disease

[@AnyaQueen-Esther]

I used to be just slightly myopic but recently, I was diagnosed with astigmatism and I'm quite surprised, though I used to squint alot, and I'm defocused most times.. I have headaches and eye strain and tiredness, which i just started observing after the test🤦 I think my mind is playing tricks on me Now I feel sad.

[@shield2957]

The squinting was interesting. I tend to squint alot when i walk outside, it feels like theres too much light coming into my eye (also why i look down) but at night i get the cool breaklights and whatnot. So maybe?

[@DrEyeGuy]

It's possible. Definitely worth having your eye exam to check.

[@brianm655]

My glasses were get at night 4 months ago, now they are not. I do have an Astigmatism in the right eye. Wearing contacts are better for me at night. My glasses are great in the daytime. Do you think i need more power in my lenses?

[@aishahashmi]

I am from Pakistan. I have dry eye problem. i want moisture Chembur glasses. How much will it cost?

[@DrEyeGuy]

You could contact them through their website and see if they could ship to Pakistan.

[@aishahashmi]

@@DrEyeGuy But I contacted them and got no response. Every video of yours is awesome and Thank you so much

[@DrEyeGuy]

@@aishahashmi hmm.. I could send them an email and see if they will respond to me.

[@saidihebeddine9207]

Hi doctor @dr eye guy need your answer : I seem to see blurry at night, but when i lubricate my eye with tear, it s completely gone for a bit? Is it normal?

[@fraisameg4939]

Good morning Dr Guymon, I had a question, I do have a astigmatism it’s at 100, I wanted to know if they have color contacts for It online ? my Eye Dr told me I could do no prescription color lenses and wear my glasses , would that help the astigmatism change in number to go down ? As well since I only where my glasses at night when it’s day time and I take my glasses of would that be okay to have the lenses on .I can see good during the day it’s just at night I need them.

[@rajsigma007]

Does this cause halo effect or starburst around bright light like sunray reflection?

[@42luke93]

When I look at my computer my eyes hurt. It is not due to excessive use. I mean 30 min in they hurt, what could it be?

[@jizburg]

Dont everyone get some starburst streaks when looking into a bright ligt?

[@lookas1209]

My problem is my right eye i cant see letter ( blur vision )when i close my left eye. What can be the cause of this....

[@uuhAce]

I know this is unrelated, but do you have any tips for hybrid contact removal? I can get it most times fine but sometimes the plunger just seems to stick to the contact

[@BlackDeerPS]

I watced that foto and everything went black what does it mean???

[@charliepea]

At night all the car and traffic lights look very bright and distorted, with some getting those streaky tails. I always thought they're a normal thing to see or it's just my tears refracting the light. I didn't know something's wrong with my eyes when the doctor tells me I have -4.00 astigmatism.

[@Poisonus636]

Oh i know i have astigmatism cause when i see color their are like extra lines.

[@Slm-w1o]

Hello, what is the thickness of the cornea? Is it normal? And in the case of high astigmatism, how thin is the cornea?

[@kkevinj1]

Most of the time it is caused by wearing glasses and is the lens being squeezed unevenly. Cornea not as much, more rare, glasses can be evil

[@silaslongshot941]

How about this: Have severe dry eyes, always constantly red, dry yet watering combined with ptosis (drooping eyelids) for which I had eyelid surgery, It didn't do a damn thing to improve the eyelid droop and except for the scars I can't tell anything was ever done. In any case the ptosis causes a wrinkle in the cornea which is probably causing the vertical double vision (with the rule astigmatism?). What can be done with this? Will ordinary astigmatism lens prescription do anything? Already had both eye lenses replaced due to cataracts.

[@susanrjecker9208]

I don't need someone to tell me I have astigmatism! At times, I can't tell if the moon is full o not it looks egg-shaped... I 've given up driving at night

[@DrEyeGuy]

Are you able to see better with glasses or contact lenses?

[@EBeverly-gv4ln]

Daytime vision is corrected but it’s like not having them on at all at nigh and lights are so blinding still. Huge halos and often even low headlights burn my eyes. If a sign uses blue lights they are impossible to read. More so than any other color.

[@rekardo3]

Yoo i find my eyes blind spot. The number isn't showing when i focus on central. Cool

[@fullyactivated]

In a bright sunny day, my astigmatism is reduced, so my so that it’s almost completely gone, so it makes sense at night it is worse. (I don’t need glasses for astigmatism as it’s only 1.25)

[@lalaland746]

I was told I had astigmatism when I was younger but I never thought I had bad vision. I thought I saw crystal clear until I started to notice that when I read words/number or try to focus on something, I see them slightly blurry. It’s like the middle of the words are clear but the outside of the words are blurry. And I noticed that this happens when I see from a distance, up close I see just fine. I also remembered when I took driving tests at night, and I looked in the mirrors, the lights from the cars were bright and blurry with strong glares, it was hard to tell if the car was close to me or not. I was like “wait so my vision wasn’t crystal clear vision all along??” I thought my vision was the normal but it is not Lmao

[@NancyZaidi]

I have astigmatism pretty bad in my right eye but i can’t really do this test. Unfortunately I’m blind as a bat and those lines mostly disappear into a jumbled blob if I take my glasses off. I would be so screwed in a zombie apocalypse 😅

[@hard2hook]

Hi Dr. Guymon, Great video. I have a quick astigmatism related question - I had LASIK years back and my distance vision is still pretty good, but I do wear glasses for computer work (+1.0R/+1.25L) and close up reading (+2.25) (books/iphone). I have astigmatism (-0.75/90) in my left eye, so should I be getting VR Lens inserts the mirror my computer work/astigmatism prescription, or lenses that just account for the astigmatism? Keep up the fantastic work and thanks.

[@bendietrees]

Optician here. Your computer prescription is based off the distance between you and your computer, which is typically about arm's length. If you are going to be sitting in front of a computer or monitor about arm's length distance from you then you will likely want the computer rx in them as well as the astigmatism correction

[@1ForTheShieldz]

I was 30 before i knew it wasn’t normal vision for everyone not to see the beautiful light rays 😂😂😂 crazy right but.. you dont know it isnt normal if it is minor i guess like mine. Ita not blurry just light rays shooting out 😂 i like it tbh. I fine instead of squinting i widen my eyes it goes away.

[@sophroniel]

except it doesn't look like the first shot, it looks like beams of light

[@pujamahata-wp4qe]

I have light reflection on my eyelashes for which I see peripheral rays coming out from light, microscoping circle in light I see double vision in light this is causing me a lot of problems please give me a permanent solution.😢😢😢😢