Testing the limits of human vision
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- Опубликовано: 7 май 2018
- That big “E” at the top of your doctor’s eye chart tells you whether you need glasses - but it also tells you a lot about the physics happening inside your eyes. We put human visual acuity to the test - in our office, and across a city.
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How would you update the design of the eye chart?
Add colors, see how well each of us perceive colors...
It's already been done many times, but it's hard to argue with just the usual letters.
Aakash Kalaria ya we would love to know if there's any chromatic acuity or not?
Instead of the traditional eye chart we could have a application running on our laptop/PC. We begin by placing the laptop/PC some measured distance away, which will be a parameter into the application, thus allowing for calibration. Then the test begins with the letter(s) slowly shrinking in size. The application can have a better resolution in providing the scores compares to the discrete (per 5 feet) chart. You can also add color based on the distribution of red, green and blue photo receptors present in a human eye.
Sandeep Banik It's already been done
Once again, you guys are killing it: subject, presentation, editing, and script. Super informative and entertaining. Science!
Kiho Son to
But not testing it to the limit. Which was the point of doing the whole thing, in which they never did.
why dont you marry them
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@@FineW_TurboM111 they sort of did. They tested the eyesight of one of their staff from a ridiculous distance using math.
*E meme intensifies*
🇪
Reeeee. ......
*E*
n
>Be me at 2A.M.
>Look at the thumbnail
>Think about memes (again)
E_Millennial_Meme.jpeg
>We're on RUclips comment section
SadPepe.PNG
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I actually get excited when I see a notification from this channel.
So far I'm very happy with you guys's content. The videos always have something that leaves in aww. If you guys would kindly do 2 or 3 videos a week, we the viewers will appreciate it. Ever since this new channel was launched my weeks have been so much longer.
Nice work! This channel is going to grow really fast!
I have a friend who has terrible eyesight in terms of distance, but extraordinary eyesight in terms of color. My friend would often argue about the actual colors of stuff. I find it incredibly funny.
Maybe he's colorblind
J.Fragoso or he can see color shades better than the average person
Your friend probably has the fourth retina cone (tetrachromacy)
hahaha, I'm like your friend. I don't have the best eyesight and I often argue with others about the colour of things
Love your content. Very well done with intriguing and exciting subjects to digress about.
Keep on the great work, Verge. Awesome science!
Hi! I’m a material scientist and I would be thrilled to see a episode on some prominent materials such as Graphene and synaptic devices.
Hey Samuel! We recently visited a company that has begun large-scale graphene production, and will be releasing a video on it in the next month or two. Stay tuned! - Cory
The Verge great! I will be looking forward to that.
Samuel Escobar just came out
Wow, never realized the standard eye chart had so much science behind it. Also amazed that I never came across a detailed explanation in the past for what it means to have better than 20-20 vision. Cool experiment, too. Thanks for the great vid!
"We're going to show you an 'E' and we want you to identify it." - kkkkk wtf, I got it and all, it was just funny..
30mins of traveling and 5 seconds of experiment LOL
Only two vids but I already fell in love with these vids😂 Instantly hit the notification👌
What an awesome start! I follow you guys on facebook but was sad there were no youtube channel hehe but now there is one! Keep up the good work. Cheers from Brazil :)
Loving this new channel!
just found this channel. i think it’s going to be my new favorite!
Very interesting video can't wait to see what you guys have lined up
You guys are awesome. My dad is an opthalmologist, I have noticed this several times, he did answer but not in this detail. Thank you guys.
this is becoming my all-time favourite channel
Amazing job guys! Please do upload more science stuff.
never knew this detail of the snellen chart. its makes more sense to me now..thanks
Loving this channel since beginning. Please make videos about future of battery and other energy storage tools, maybe capacitor
Perfect! easy to understand, thank you verge.
I’ve just learned about visual compensations in a typography class, I’d love to see a video about that. Cool channel btw!
Great video, loving this channel!
You guys are awesome!! Keep up the good work!!
Great channel just subscribed. It’s great to learn something new
Thanks for the very interesting content and keep up the high quality content. I would really like you guys to make a part for how human brain saves information and how it solves day to day problems by utilising this info. Cheers.
This is a fantastic educational video! Nice work
Your channel is very interesting and your video and audio are so amazing
So much effort for a 5 minutes video much appreciated the work great video 👌👌👍👍👍😍😍😀
Great science test n awesome content
Great Vid ! Definitely learned alot!
Great video as always!!!!! Keep it up :)
Awesome work!
Wow you guys are really putting a lot of effort in your videos i like it.
Great video and very informative keep it up 👍
You guys reaserch on awesome topic.! That's why you are popular worldwide.!
Love this new channel
This channel is amazing!!
Keep up the good work guys!
Excellent. I shall employ this concept for image recognition in a human like manner . Go head please
Love this channel
Your videos are great!
The "abstract shapes" design is actually used in Japan. Instead of reading off letters, you're looking at circles that have side missing. You're supposed to be able to tell if the missing piece is on the top, bottom, left or right of the circle.
I love this channel!
Superb production
Wow I thought this was like a 2 million+ subscriber channel with dozens of videos. Can't believe I get to be here from the beginning!
Awesome video!!
Super nice animation!
Subscribed! Dude, your channel here is really cool. Im going to promote it.
Top notch from verge science
This Video's dope, watched good stuff after a long time after ted ed
Optometrist myself and this is really well done and funny. Wish you would have done this earlier ;)
I love science! Great video
ƎxcƎllƎnt vidƎo
David T EXCELLENT VIDEO
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Excellent.😺
Damn! The Quality of these Videos are great
Sid Stark I like your profile picture lol
Domo Bro Thanks
Sid Stark :)
very nice video. funny and instructive.
Great channel... i.e. A thing I would like to see is wind tunnel performance of Electric cars VS combustion engine... how they measure up and are they a lot more efficient
Great channel!
Notifications here I come. Love for this channel
Your vantage point must have been the top floor corner of Spear Street Plaza! Wow, I may well have been walking past at that very moment thinking "I wonder how they test eye sight? Maybe there'll be a video that explains it on Verge Science...?" :D
Please make a video about monocular vision. Very interesting how our brain interpret the lack of information.
question! how does your score on the snellen chart relate to what our glasses "power" is? like when i get a prescription for glasses it comes in numbers like -1.5 or -2.5, how does that relate to 20/20 on the snellen chart?
Good question! It's...complicated. The units of those numbers in your prescription are diopters, which is a measure of your lens's power. You can find *rough* conversion charts online that translate diopters to Snellen chart ratios. But, ultimately, a lot more than your Snellen chart value goes into your final prescription...so the chart is just one measurement your eye doctor will take when evaluating your vision. ~Will
Roughly you can expect a one line difference per quarter. So you have 20/20, 20/25, 20/30, etc... So a person who is -.75 can generally expect to see 20/40. -.75 is three quarters away from zero and 20/40 is 3 lines away from 20/20. Again, not exact, but a good rule of thumb
yep, .25D per line is a good estimate, and having an astigmatism can also complicate the rule! so if you have more than one number in your prescription e.g. -1.00/-0.75 x 180, those first two numbers (-1.00, -0.75) will contribute differently to your diopter/Snellen "conversion"...
Audio is crisp!🔥
I would add A means for light sensitivity for the eye chart, Determine which light level is right for each person, Because some people cannot see well under certain types of light, I would also factor in Wether you have been staring at a screen all day, Hydration levels, And if your eyes have adjusted to outside light, or if your eyes are that of a animal in a cave, if so, then an eye test under bright lights, or outside would be a poor fit, Giving patients a good view to adjust their eyes And controllable lighting for light sensitivity, Must let the patient control the light levels. All these tests are normally done in a small room with artificial lights Which your eyes may or may not be used to, Having a color, or diffrent back lighting could also help test your eyes ability to discern wether or not your eyes can quickly adjust to light changes.
So sad that I can like a video only 1 times, these videos deserve multiple likes. Brilliant, absolutely brilliant content.
Pretty cool!! I know the main audience is in the US, but it would be awesome if this science channel used metric system. Like the rest of the scientific community
Great new channel👍
E
OMG
Is the angular resolution calculated by taking into account the quantity of photoreceptors and/or the airy disc formula? Using the airy disk formula I see a similar limit of angular resolution between 0.5 and 1.46 arcminutes (depending on wavelength and pupil dilation), so it would mean that we couldn’t do much better even with infinite photoreceptors, right?
Great videos !
Horrible videos
This channel is so underrated
Love this !!!
Hate this !!! Love Blanket
Can you tell me about the tools/software you use for your animations? I’m looking to create similar effects but don’t know if I should use Apple Motion or something else?
Hey Ryan, all of the animations are created in AfterEffects. Thanks for watching! - Cory
This was too cool!
I love this channel
I came here for the E, not even interested in the vid,
But I found that it was very well done!
Could you make a video explaining when we look from left to right why does it feel like my eye jumps from left to instead of being a smooth cross over. For example, if i tried to smoothly look from left to right it feels impossible it just feels like my eye jumps each space if that makes sense
These videos are so well produced, but why aren't there any closed captions for the hard-of-hearing audience?
Glad I subbed.
if you close one of your eyes whilst looking at one of the white circles at 1:17 directly and the other with your peripheral vision, then you can easily demonstrate your blindspot due the optic nerve in your eye being devoid of receptor cells I.e. rods & cones.
Better explanation in comparison to what my opthamology professor offered.
You may be wondering what eye tests are like in places where people may not know the English (or any) alphabet. In China (and I imagine other places) eye tests use the same layout but basically do what they did in this video for the far-away tests. They use a block E in different orientations; so you should be able to see which way they are oriented on a given line: up, down, left, right.
5:29
Haha very funny...
I want to SEE more puns
love it
You guys remind me of a website I used during my studies for university, it’s called 99% invisible check them out! The sort of articles they post would be amazing to see on RUclips
amazing 👍
Really cool
great video!!!!!!!!!!!!!!!!!!!!!!!!!
Sweet video
The outdoor test would be distorted by the weather too
3:22 it isn't aligned well.. pain to my eyes
Keep it going.
We as humans can also predict based on the partial information present to us. For example, even though I can't see the E clearly, I will probably be able to predict its an 'E' and the orientation based on the blurred image I see. Therefore, I think we can add a second degree of test to the existing standard, which could involve something like a 'Gaussian' blur.
that must've been fun
You cound try a video about how a computer actually works. From putting together the hardware to firstly writing the code :)
i like this new channel
Interesting 🌸🙏
What's the name of the soundtrack at 1:18? :)
Vishnu: I love Verge science