Macro Pupil Constricting in Slow Motion - The Slow Mo Guys

  • Published on Jan 15, 2019
  • British people are not known for great eye contact, but Gav steps up his game by looking deeply into Dan's eyes... From about 2 millimeters away to find out how quickly a pupil constricts.
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    The Speed of Pupil Dilation - The Slow Mo Guys
    Filmed at 1000fps and 500fps with a Phantom Flex 4K
  • EntertainmentEntertainment

Comments • 5 282

  • gökhan Okur
    gökhan Okur 12 hours ago

    Arkandaki oyuncak arabayı istiyorum türkiyeden selam

  • LTC
    LTC Day ago

    The eye is an incredible tool, thank you for sharing with us these amazing images.

  • Leau Valent
    Leau Valent 3 days ago

    I wish I have a brown color eyes

  • ABS VlogS
    ABS VlogS 3 days ago


  • Pedro Sequeira
    Pedro Sequeira 4 days ago

    Not disgusting at all, just fascinating.

  • Stan Smith
    Stan Smith 4 days ago

    Why is this video only 50 FPS?

  • Abderahim ChaiB
    Abderahim ChaiB 4 days ago

    Sobhana lah سبحان الله

  • zac andrews
    zac andrews 4 days ago

    Y’all should do steel wool and a 9V battery

  • max thibodeau
    max thibodeau 4 days ago

    poping a pimple in slow-mo..... lol

  • Mortis
    Mortis 5 days ago

    Akways wondered what voluntary nystagmus looks like to other people.
    I guess this is close enough.

    MAHMOUD SAKKA 5 days ago

    You are great guys

  • Inner Vigilance
    Inner Vigilance 5 days ago

    Our eyes are like giant slugs. 👀

  • Dalton King
    Dalton King 5 days ago


  • Michael Grey
    Michael Grey 5 days ago

    Do a cats eye

  • Steve Brown
    Steve Brown 7 days ago

    A little bit of sick went in mouth at the eye lid/lash shut noise! 🤢🤣

  • ByzantineApe
    ByzantineApe 7 days ago +3

    This video weirded me out for some reason, like how the fudge does the universe come to our design without an engineer? Life is clearly no accident it seems

  • CheesyQuokka YT
    CheesyQuokka YT 7 days ago

    Imagine a giant eyeball as you lockscreen, and wherever you move, it follows...

  • Dennis Destro
    Dennis Destro 7 days ago

    what is inside of that black circle in the middle? And why it is still completely black even after lighting? 🤔

  • NotGang Affiliated
    NotGang Affiliated 8 days ago

    That's so cool

  • мya ѕpencer
    мya ѕpencer 8 days ago


    SARJ_STONE 8 days ago


  • Haroon Alam
    Haroon Alam 8 days ago


  • Alex Card
    Alex Card 8 days ago

    So my question is, with that much zoom and direct light, how come we couldn't see the back of Dan's eyeball through the pupil?

  • The real Leggy P
    The real Leggy P 8 days ago

    The crunching of his eyelid closing on his eyelashes was very disturbing

  • Brad Fournier
    Brad Fournier 8 days ago

    Get that camera a keg to pound on #slipknotanymore

  • FOX Ishac
    FOX Ishac 8 days ago

  • In4It789cat
    In4It789cat 8 days ago

    Wow!!! That’s so frickin cool!!!

  • Under The Info
    Under The Info 8 days ago

    This is the real black hole.

  • Lasse Ibsen
    Lasse Ibsen 8 days ago

    Damm, im out guys, getting sick of looking af the strings and holes in the eyes color mass thats dilating....
    but what a nice cam!

  • Brayden Nunnally
    Brayden Nunnally 9 days ago +5

    3:43, your crush when someone in your class says y'all would be cute together.

  • irpan bey
    irpan bey 9 days ago

    apakah ini akan membuat matamu sakit?

  • NPC #618479
    NPC #618479 9 days ago

    eyes are fokin cool as fok

  • jada young
    jada young 9 days ago

    Awesome looking eye. The window to the soul.

  • Gabriel Verdida
    Gabriel Verdida 10 days ago


  • Geralt Nt
    Geralt Nt 10 days ago


  • Atharv Saini
    Atharv Saini 10 days ago

    its the best and the most beautiful thing i have ever seen in my life i will never be able to forget this knowledge. wow

  • Dicka YP
    Dicka YP 10 days ago

    Orang indonesia SUBSCRIBE aku ya :) insya allah aku doakan semoga sehat selalu untuk kalian yg SUBSCRIBE aku

  • Christopher Regalado
    Christopher Regalado 11 days ago

    “They look like little fibers” Westworld confirmed

  • Terrio Lancer
    Terrio Lancer 11 days ago

    The pillars of creation is your eyes.

  • Paul Maughan
    Paul Maughan 11 days ago

    It's an assault camera. Seriously looks like a gun barrel.

  • Denver Gevero
    Denver Gevero 11 days ago


  • HomeBoy TV
    HomeBoy TV 11 days ago

    His hair looked disgusting

  • Create -Space
    Create -Space 12 days ago

    We made it well.

  • Fakhri As
    Fakhri As 12 days ago

    Go watch I Origins

  • Karim Kj
    Karim Kj 12 days ago +1

    I wonder how people deny god... The human body is such a crazy machine..

  • محمد الفتى
    محمد الفتى 12 days ago

    فتبارك الله احسن الخالقين

  • sukun ady
    sukun ady 12 days ago


  • Antony Vinith
    Antony Vinith 12 days ago

    Ur the best guys

  • David Celaya
    David Celaya 12 days ago


  • Himanshu Tirpude
    Himanshu Tirpude 13 days ago

    that was awesome!!!!!
    today learned something new, interesting, and captivating about us!!!
    how wonderful our eye is... its just amazing.

  • Abdulmalik Abdullah
    Abdulmalik Abdullah 13 days ago +1

    سبحان الله

  • Zarkow
    Zarkow 13 days ago

    Bladerunner 2049

  • theyadorenina
    theyadorenina 13 days ago

    2:33 lit rally a tragic luv

  • Joe B
    Joe B 13 days ago

    Really neat guys thanks for the always entertaining content 👌

  • Jared Bray
    Jared Bray 13 days ago

    Do that on shrooms

  • Julius Dexter Mallari
    Julius Dexter Mallari 13 days ago

    Gross and digusting but amazing and fascinating!

    LORDSTARK NRJ 14 days ago

    HEL LYY 14 days ago

    3:43 uuuuuuuu

  • Faraz Alam khan
    Faraz Alam khan 14 days ago

    look at plenty of wires in our eyes.

  • Craig Reustle
    Craig Reustle 14 days ago

    See if you can focus on the back of the eye.

  • F.A.T 94
    F.A.T 94 14 days ago


  • Hafsa Ayeshaahmed
    Hafsa Ayeshaahmed 15 days ago

    Y is DANs one sleeve torn all d tym

    ZOLDIK 15 days ago +1

    If he did it with a girl's blue eye it would be better than a disgusting eye 😂

  • mohammad mushtaaq
    mohammad mushtaaq 15 days ago

    What about two different persons eyes lock like

  • Robi Slankers76
    Robi Slankers76 16 days ago +1

    I have a suggestion why you don't try it with thunder

  • Kobe Spoor
    Kobe Spoor 16 days ago

    U should have used someone with light blue eyes, would been much nicer effect than this dude with shitcolored eyes

  • JimmyJayJunior
    JimmyJayJunior 16 days ago

    One of your best videos! That was amazing

  • mido alanazi
    mido alanazi 17 days ago

    *use it for.shaving*

  • Md Fahad
    Md Fahad 17 days ago

    This video is just what that the word awesome deserves.....

  • teagan mcguire
    teagan mcguire 17 days ago

    Dan the Lab Rat❗️‼️

    I LOVE YOU LORD 18 days ago

    I got freaked out when he closed his eye lids 3:35

  • Naeem Bagwan
    Naeem Bagwan 18 days ago

    That was Incredible 👍

  • 아미라고니타
    아미라고니타 18 days ago

    Thankyou for indonesia subtitle

  • Xplane 11 Fan
    Xplane 11 Fan 18 days ago

    Your eyes are now blessed, you can see the spiritual world

  • brydonjesse
    brydonjesse 19 days ago

    Nice eyeball love the repeating diamond pattern