Retina | An Introduction | Part 1
HTML-код
- Опубликовано: 29 ноя 2024
- Retina | An Introduction | Part 1
Like this video?
Sign up now on our website at www.DrNajeebLe... to access 800+ Exclusive videos on Basic Medical Sciences & Clinical Medicine. These are premium videos (NOT FROM RUclips). All these videos come with English subtitles & download options. Sign up now! Get Lifetime Access for a one-time payment of $99 ONLY!
Sign up now on our website at members.drnaje...
---------------------------------------------------------------------------------------------------------------------------
Why sign up for premium membership? Here's why!
Membership Features for premium website members.
1. More than 800+ Medical Lectures.
2. Basic Medical Sciences & Clinical Medicine.
3. Mobile-friendly interface with android and iOS apps.
4. English subtitles and new videos every week.
5. Download option for offline video playback.
6. Fanatic customer support and that's 24/7.
7. Fast video playback option to learn faster.
8. Trusted by over 2M+ students in 190 countries.
---------------------------------------------------------------------------------------------------------------------------
▬▬▬▬▬▬▬▬▬▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬
(0:00-3:40)
Delicate membranous light-sensitive part of the eye, location in the eye ball;
Outermost protective layer= Sclera & Cornea.
Middle layer (Uveal Tract) = Choroid, Ciliary body & Iris.
Innermost layer= Retina; pigmented epithelium, Innermost Neuronal layer of Retina.
(3:41-9:30)
Exact location of Retina; sandwiched between Vitreous Body inside (Vitreous aspect of retina) and Choroid outside (Choroidal part of retina).
Ora Serrata; Wavy margins where light sensitive part of retina terminates anteriorly.
(9:35-13:20)
Through the Ophthalmoscope: Only posterior part of retina i.e., Optic Disc and part around it visible; Ocular Fundus.
Non-light sensitive part of retina; continuing beyond Ora Serrata.
(13:22-23:20)
Embryological Development of Eye: CNS development; Neural Tube; Optic Vesicle to Optic Cup; Outer and Inner layers differentiate into outer pigmented & inner neuronal retinal layers.
Retina, therefore is the only part of CNS visible through ophthalmoscope.
(23:25-29:10)
Fundoscopy: Posterior pole of fundus(yellowish) [Macula Lutea]; Optic Disc nasally/medially (pale colored).
Macula Lutea in detail: Has undefined margins, slight depressed area in center; Fovea Centralis.
(29:15-34:25)
Optic Disc in detail: Highly vascular (Central Retinal Artery coming out of it), Optic Disc; point of Retina from where all optic nerve fibers are moving out of retina through lamina cribrosa as Optic Nerve.
Technically Optic Nerve is a CNS tract and not a nerve per say.
(34:30-38:40)
Optic Disc continued: Central Retinal Artery, branches after passing through the Optic Disc & its Nasal & Temporal branches then supply inner parts of Retina.
Outer part of Retina supplied by Choriocapillaris.
(38:41-41:30)
Optic Disc continued; Central Retinal Artery (CRA) continued: Fovea Centralis (FC); the area of maximal visual acuity, depends only on Choriocapillaris for nutrition & not CRA, therefore NO Blood Vessels: Avascular.
Further comparison of Macula Lutea and Optic Disc.
(41:31-43:44)
Clinical Co-relate of Optic Disc (OD): Physiological Cup: Depression in OD; In Glaucoma when ICP is very high, this cup is pushed backwards; pathologically cupped/depressed. No rods & cones here so; Blind Spot.
Comparison continued: In Fovea Centralis (FC), cones are packed very tightly & blood vessels basically pushed aside to reveal FC; hence thinnest area of the retina; sharpest acuity.
(43:48-45:30)
Summary of comparison b/w OD & Macula Lutea (ML); 1- OD nasally situated, ML central but inferolateral to OD.
2-OD = 1.5mm, while ML = 5-6mm.
3-OD is pale, ML yellowish.
4- OD = Blood vessels coming in & out; highly vascular, while ML = Avascular.
5- OD is a blind spot while ML has point of maximal visual acuity.
6-OD has 'Physiological cupping' while ML has Fovea Centralis.
7-OD has sharper margins, while ML much diffused, undefined margins.
(45:31-51:00)
Blood supply of Fovea Centralis. Descriptive schematic diagram of OD, ML, Optic Nerves and Retinal Arteries, along with their positions in eyeball from above.
---------------------------------------------------------------------------------------------------------------------------
Join this channel to get access to the perks:
Sign up now on our website at members.drnaje...
Follow us on Facebook:- / drnajeeb
Follow us on Instagram:- / drnajeeblectures
![Megan Thee Stallion - Roc Steady (feat. Flo Milli) [Official Video]](http://i.ytimg.com/vi/HozPPyqW0dY/mqdefault.jpg)
![ROSÉ(로제) - APT. (Band VER.) (With. 이영지) [더 시즌즈-이영지의 레인보우] | KBS 241129 방송](http://i.ytimg.com/vi/IW8qaemx74g/mqdefault.jpg)
I feel soo lucky that i born in this era where Dr najeeb exists ,this living legend is my inspiration ,i love u sir from india God bless u
👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍
@@changeeyecolor3891no
But i am very unlucky because he is not teaching me in classroom i have to aproach them indirectly 😔😭
Your coment is 100 % correct
Exactly 😊
If ever there is a real teacher, that is Dr Najeeb. What an erudition. What an explanation. Truly competent .I'm addicted to it.
Thank you for all the love and support💖
What makes his lectures very impressive is the depth of knowledge, the combination of manual skills and the amount of information behind. Though I am also a medical professional teaching essentially pathologyI think these type of lectures are much superior to most of our ppt presentations. Great thanks and congratulation from Hungary
thanks for imparting knowledge in me about the eye.
Indeed..couldn't agree more..
Congrats on the very superb job...n Thank you...
Laszlo Kaize
👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍
I felt like I just read 10 books ....and this was only an introduction!! Much love from Kenya sir. You are one of a kind
He is so knowledgeable and so selfless to execute it ❤.
Repetition is at the heart of good teaching. He uses this device beautifully, in a way that doesn't bore the audience, but continuously reinforces the central points of the subject he is teaching. Great job, sir!
Hats off to u sir.... U make medical students who can't afford a tuition / classes to understand easily...
Thank you sir for liking
I'm an optometrist and this is my right choice that to hear this class. Beautiful demonstration that makes easier to understand the fundamental structure of the retina. Thank u sir.
FOR THE FIRST TIME , CONCEPT ABOUT RETINA BECAME CLEAR,AFTER WATCHING YOUR VIDEO... THE FEAR OF ZOOLOGY IS DECREASING..THANK YOU SO MUCH..
No words can describe what a gigantic and beautiful work you produced.
Great
Thank you so much!
I’m optometrist student in UK, your lecture really helped me to understand all the content easily
Great Teacher..who is a topmost brand of Medical knowledge ⚕️🙏
Thank you❤
Acha
I respect of your lecture, sir. It's interactive. I appreciate when u give an open question like "am i clear? " or "any question after these? " thx Sir, u made the eye anatomy easy to learn. God bless u.
Under behavioral studies, i'm listining watching hearing more to you as i'm liking you and even use my hobbies to spend with you.
Thats how i grow personalitically in between you
you are one of the greatest doctor and as well as a teacher , proud of you .
This Was the most Confusing Topic for me ....and Then , I Discovered dr. najeeb Sir, Now i Understood it Completely ....Thanks A Lot Sir 💓🙌 Love From India 🇮🇳
You are most welcome. Stay motivated and stay blessed! ❤
@@DoctorNajeeb Eye lectures and patho Ent or Cmed lectures available plz Help me how to Join or get that plzzzzzzz
I wish I would be your student . This is something you can easily understand in simpler language .. hats off sir.
No one can explain better than Dr njeeb
I am Ojochide from Nigeria. Your teaching style is quit impressive. Your indepth knowledge is amazing. I'll love to teach like you.
Just amazing Sir ❤❤❤❤❤❤. What a brief and conceptual lecture you delivered.
Allah bless you sir.
جزاك اللّٰه خيرًا
Thank you for your kind words❤ Keep supporting ❤
i am high school student in turkey. your lectures are awesome, so informative and clear. thank you so much.
TBN
TBN news 2 9b
2
TBN news
Tbn 2new
i am Ukrain and i love dr Najeeb lecture pleas dont stop!!!!!!!!!!!!!!!
doc..do you have lectures of internal medicine for mbbs so I can buy it which will help my study,, thanks doc
same im also in ukraine
@@deepenrajbanshi3654 Please visit www.drnajeeblectures.com or email us at support@drnajeeblectures.com
no other words to say but only MASHALLAH ..
Thank you so much for your love and prayers :)
Dr. Najeeb, your lectures are very informative and make conceptual understanding very easier. I hope that your videos reach at all four corners of the Earth
Oooohhhhhh
got test in two weeks! ur videos are really helpful sir! JAZAKALLAH!
No words to explain my feelings to you sir you are living legned....
i started to love my life because of u! u are an amazing teacher
great thank for Dr Najeeb. He is really the wisest professor.....
Thankyou sir. I've never had such a clear understanding of Retina before this :)
Thank you for your love and support.
respected sir
the living legend of medicine
i wanted to tell you my own feelings and experience,CNS system which never entered to my (CNS) brain - you made it so simple to understand difficult system.
hats off to you
in fact i wanted to join live lecture.
where is these are conducted
i am working at present in Oman
keep on this fruitful work Dr...I am a new student and I just started watching your videos one by one...in fact i am more attracted to your lectures than studying on my own..Big THANK YOU from ad-damaziin(sudan)
You are such a blessing for medical students we really love you soo much
Jazakallah for your lectures ❤
Thanks very much doctor for your hardwork to make this channel, respect from indonesia
Such a great Dr, I hope that teachers all around the world learn from you!
Much respect
my favourite teacher dr najeeb i love uuuuuuuuuuuuuuuuu
No words to tell about ur explanation tnqq so much sir we love u sir we r very lucky to u have sir
Glad to know that you found it meaningful and understood clear concepts very easily! 💖
Sir... Really u make the concept very clear.. We r hardly taught about something in our colleges which makes us feel bad.. That we don't know anything.. Especially the concept behind.. BUT PEOPLE LIKE U MAKE US CONFIDENT BY YOUR LECTURES.. TQ SO MUCH SIRRR. Ur videos r really very very helpful..
Can't explain ..you are most good teacher sir ..your convincing and teaching techniques is unique and understandable..thanks a lot for all kinds of human &anatomy video which is down on RUclips..great respect and love you sir ..
Iam a optometry student.......These video is really helps me a lot to understand about eyes.....Thank you so much sir.....
Glad to hear that it was easy to understand. Stay blessed ❤️
Wow... it's very amazing to watch a passionate, competent teacher! It's better than watch any sports! Thanks for sharing!
Thank you sir , May almighty Allah shower His blessings upon you.
Thank you sir! Your lecture is a big help, i am assigned to report about retina this coming oct 24 here in our work place eye center in Riyadh, More blessings may come upon you sir...
A very talented teacher .. clear explanation ..thankyou so much sir ..🙏🙏🙏🙏🙏
all I can say is thanq so much from bottom of my heart sir
Mystery solved! Thanks to Prof Najeeb.
You are most welcome! ❤️
Super explanation,father of medicine love you sir and a bundle of thanks
its always great to listen to your lectures. you are educating the world Dr Najeeb.
O my GOD.... I just loved your depth of teaching... Very clearly... Sir. 🙏🙋♀💖😇
Thank u Dr.Najeeb.You make our concepts strong.
Drill method👍 i m a teacher too but i look upto your lectures for any kind of help. And u taught me the way to teach effectively the anatomy of an eye ball ...Almighty bless you with sound health and success
Sir apko dil se salam sir apne jese explani krte h bht bht bht jada khub aache se smj aata h ......sb clear h apka vedio dk kr
im from Yemen ......you r the best
love India
Honourable Sir in future I will follow your teaching methodology. InshAllah.
Its super way to deliver lecture.👍🌷
Sir Stay blessed now and forever along me.
Ameen suma Ameen
Thank you so much sir ..For medical student u r such a blessing .. Being a medical student i feel so lucky because ur way of teaching is so convencing or understandable..
Glad you enjoyed! Keep watching ❤️
One of my favorite teacher Dr Najeeb love you sir your teaching methods
Thank you for your love and support❤️❤️❤️
sir...u just made it so simple nd easy....ur knowledge is just unexplainable...thnks alot fr uploadng such lectures...... !! again salute to ur efforts 😇😇
Explaination was crystal clear sir
You were explaining were briefly in simple manner
Thank you Sir
Thank you for sharing your feedback. Keep supporting ❤️❤️❤️
doctor,ur lecturer is really awesome,i gained more information .thank you so much doctor.
this is quite something sir Najeeb..
i applaud your effective teaching Doctor
Finally It's all clear in my head.
thank you so much !!
thank u so much dr najeeb. may Allah grant u jannah
Thanks a lot, sir. What an amazing teacher you are, god bless you. 🙏🏻 From 🇮🇳
You are welcome❤️ Thank you for your love and support❤️
Sir Thank You for your Wonderful Explanation of Retina , You have made understanding of Anatomy so Simple .
Thank you sir.... you are the god gift in morphology.
thank you docter this video is very useful
"Kuch " glyal cells ....
Its amazing to hear when you slip some Urdu word :) :)
dr Najeeb,thanks alot for your clearly lacture.
Watching your videos is always inspiring sir, wish to meet you one day.
I pray God keep you strong.
From Cameroon
Thank you for all the love and support❤️
Your follower from Iraq شكرا دكتور ،⭐❤️❤️
Thank you for your love and support❤️❤️
Thank you dr najeeb for simply being the best lecturer ,,, Keep up the great work !
I am pursuing my bsc optometry degree and thz vdo is too helpful to me thank u sir
Thank you for your love. ❤️❤️
@@DoctorNajeeb sir a doubt what can I pursue further after my bsc optometry degree....about my higher studies which is a good scope.... waiting for ur words...I have asked lot many people's but none responded.....my last hope is u....
U really deserve the great respect...Although its my first experience with u nd its really great..Thanks a lot sir❤
A very good guide to all topics
Thank you sir
Sir, ur explanation is wonderful n spectacular.. My basics about retina r very much clear through ur explanation.. hope u give other lectures on other topics about eye too.. Teachers around d world should take inspiration from u... Thanks for ur effort...
Sir thanks alot. May Allah make ur life healthy,wealthy and happy ameen .
You are most welcome❤ Stay blessed ❤
out here learning for my girlfriend's exam...thank you sir
Best of luck!
I am very lucky that I born in the era of MS Dhoni & Dr Najeeb
Thank you so much sir
dr deepak pathak
MS shalakya
Patanjali bharitya ayurvigyan Institute haridwar
This class is very excellent.. I have seen From Bangladesh.
Sir seriously you are great...god bless u always
Thank you so much Dr. For making such videos n making us to understand the concept 😊💖
شكرا جزيل great thanks from egypt
thnku so much sir... no one can teach like u thnku soo kuch
Thank u Sir!!! This was very useful.Thanks a lot.
Great creator sobhan allah
And amazing explanation
What a great teacher. Thank you for sharing these lectures... I wish I had teachers like you and would come out of the lectures full of understanding not full of confusion..:))
Ll
Sir I am your biggest Fan and You help me a lot in clearing my concept . Love from Islamabad ❤
Glad to hear that
It is my fortune to listen to a legendary palatable lecture by my respected teacher. May I request you to deliver a lecture on Physiology of Binocular Single Vision and Visual Pathway.
I'll be eagerly waiting to listen to your lecture.
Thank you Sir.
Sir please take guest lectures in India also 🙏
Regards and respect
extremely awesome.. u always the best... hats off to u dr Najeeb
Isn’t the pigmented epithelial layer part of the choroid?
u r awesome sir
no words to describe ur greatness and work
truly amazing
Thank you very much, this was very useful
Amazing lecture! Event though I am not a student, I like it very much. It really explained how the eye is built. Thank you!
Glad it was helpful! Stay blessed ❤️
the lecture is super good, thank u DOC
👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍
Thank you sir
I am from Nigeria and this lecture made me understand more😊
Glad to hear that
EXCEPTIONALLY WELL EXPLAINED SIR
Sir... You are the best.....
Thank you Dr Najeeb. Much blessings
Sir how and from where you developed such a great concept of all subjects......its awesome sir
Thank you sir
Your vedios is most important 👌👌👌👌👌👌👌👌👌
sir dr najeeb thank you for understanding teaching