Accommodation in the eye (focussing) for IGCSE Biology

'So how is it that contracting the ciliary muscles slackens the suspensory ligaments?' I hear you asking, (remotely, via the interweb). I hope I answer this and related q's.

[@Conquerer777Tanzi]

This is the type of biology teacher everybody in the world needs!

[@melaniebrown8444]

your explanation of the contraction/relaxation of the muscle/ligament was so clear; I had read about this several times and couldn't work it out. Thank you.

[@toomashanso187]

how weird, i was just lying in the shade of a tree in the serengeti watching wildebeest, good luck to everyone doing their igcse tomorrow!

[@pijushbhowal6214]

Тоомас Хансо classy English ha

[@annymus4502]

Wait, really!? Or is it sarcasm?

[@stevesmith3517]

there reallly was no need for that comment but ok

[@softwarrior1512]

Found this today,but thank you,you helped me understand how the lens works with the objects which are far and close

[@honorcolling4687]

youre the only person who has made me understand why the contracting slackens the suspensory ligaments thankyou so much
youre so clever

[@TomDare]

Really pleased it helped. Thanks for commenting!

[@abodeyabyad4566]

Thank you soooooo much for doing these videos , much better than my teacher and my text book , they make everything simple and clear , unlike the textbook and my teachers.

[@user-qg1bz9wr1d]

BEST INFORMATION. I HAVE LIKED IT

[@josephwub]

I've never had so much fun learning

[@katelevett9850]

As a mature student, I had to get a C for biology when it wasn't one of my options at school. My work commitments meant that I had no choice but to self study and your videos have just been amazingly useful. Fingers crossed I did enough on paper 1 on Tuesday.

[@HK4718]

how did you get on?

[@ipv2000]

this is really helpful for students like me who self study the triple course :)

[@rajikannan4857]

dude my text book is nothing compared to this video of yours.TYSM!!!!

[@AlexHop1]

Thanks, very helpful explanation of how how the ciliary muscles work.

[@sydneywhalley24]

This explained it so much better that school
Thanks for the help

[@mujeebabbasi5983]

Thank you for this video. My concept is crystal clear.

[@otiebrown9999]

All normal eyes, continously monitor micro-blur on the surface of the retina.
It is a superior feedback control system, with a time-constant of about 1/3 second.

[@vnk_x]

Holy shit! I saw a wild beast outside my apartment while watching this video!

[@otiebrown9999]

Great insights!

[@kgompels]

Thank you! - Great summary for the course :-)

[@kartikaggarwal7197]

Awesome explanation

[@osafkhan4388]

Good video bro.Very much informative

[@deepikachouhanchouhan5554]

Biceps example best🔥🔥🔥👍👍

[@dduda2894]

Thank you for an explanation

[@stingbusdiesmore3432]

YOU ARE AMAZING

[@michellemankga2530]

Thanks you , from finally I understood this topic ,nice teaching by the way . Hopefully I'll pass my exams thanks

[@lucashucbourg-muller7024]

You are so much better than my teacher

[@wotcanary7282]

Thanks for this!

[@aggieruiru1999]

The best explanation ave found...and very entertaining aswell 😅... thank you Sir 🙏

[@TomDare]

Most welcome!

[@MuhammadHussain-ry9vh]

thank you very much for these videos! pease can you try to do the whole biology igcse course, my boards are next year and you teach better my teacher and book... thanks

[@taladaqqaq522]

Thank you so much 💕💕💕

[@inesraafat5619]

Thank you so much 😊

[@reyskywalker.]

Thank you so much sir 😀❤️

[@alyabdelnasser7199]

thank you

[@moshecohen-mn9cj]

Mr T.Dare please do one on genetic.Please.Thank You.

[@naomim564]

Mr Dare, you are so interesting!

[@simran9194]

Thank you this video really helped me !!!!!

[@TomDare]

Glad to have helped

[@gemsx2045]

thank you!

[@13.tarunchandwani51]

Thank u sir

[@jutsu712]

I was actually watching cows when watching this does it count? 😂 thanks the lesson was very helpful l finally understood this

[@fathimafaizal6035]

ur vdeos are amazing.. pls do one on sex linked inheritance
thankyou.

[@sebbe91]

Great

[@adernain]

Does the accommodation decrease when someone has Myopia? So lets say someone has 4 Diopter Myopia, will that Accommodation become 10 instead of 14?

[@dominicbaggott8984]

I can see clearly now my lens is thin, I can see all wilder beasts roaming free

[@benslv]

6:11, I was actually watching wilder-beast while watching this video!

[@barnstormer322]

wow! amazing!

[@KingPenguin]

Wow Ben! :P

[@massassinx__6778]

You know what I was actually watching wilderbeast

[@fittness5]

I was actually watching wilder beast xD

[@augustinrobert9869]

There's a wildebeest in my garden but I'm blind

[@Hayat-xj2gi]

great mate you should make one on plants reproduction

[@TomDare]

Wouldn't you know... I have!

[@calmiddleton3081]

how odd just out my window a massive group of wilderbeast were running across the road in the uk, crazy. huh?

[@TomDare]

Odd indeed. Depending on where you are, of course...

[@leopachis6321]

Good luck to anyone taking B2 2017 exam

[@martineeson1677]

Was actually looking at buffalos 😂

[@animegirl8048]

But amazingggg video

[@TomDare]

... thank you for your amazingggg comment!

[@zeeshitbag7545]

Can you do f211 via please,tom

[@TomDare]

Shazia Nawaz Trying to get videos out as and when time allows. Also, you are the last year that will take F211, other than retakers, so we'll probably focus on the new syllabus from next year. There should be some F212,3 &4 videos that can help on the playlists. Hope that helps.

[@zeeshitbag7545]

no sir i am first year studnet so i am doing as.i was doing igcse last year whcih you got me through :)

[@zeeshitbag7545]

sir can i ask when the vidos will be out???

[@TomDare]

Hmm, not sure. Will hopefully be a couple in the second part of this term.

[@zeeshitbag7545]

can you not make vids by today or tomorrow ??? the exams on monday

[@user-pk9nb8ut8m]

light is commin like a mopet 2:03

[@GUCCI-hz8ow]

Hello Tom
I'm biology teacher too. I have a question. The ciliary muscles of a normal eye are in their most relaxed state as then the thickness of the lens increases, thus increasing focal length. So how you say the ciliary muscles are contracted when we look at near distance? 🤔 I think when we look at far distance then the ciliary muscles contracted

[@TurfToken2222]

How the fk they know all of this shit?

[@animegirl8048]

Who else wanted to jump over while listening 🤓😋😜