Neurology | Optic Nerve | Cranial Nerve II: Visual Pathway and Lesions 

YOU COULD SINGLE-HANDEDLY PUT ALL THE PROFESSORS IN MY MED SCHOOL TO SHAME

You are a blessing for every medical student. Love and respect you from the core of my heart. I dont know how to express what I am feeling right now. Just.. Be billionaire and stay in good health.

I would never get this information from my university, you made everything crystal clear THANK you so much ..

Just wow😮 Five(5) years later and still unmatched Crystal clear concepts 🙏

I love this video, and I am excited to watch the rest of the cranial nerves - which I know far less about. I've been working in an ENT department for about 1.5 years now, so I wanted to add a few things. First: anosmia is complete loss of smell, hyposmia is reduced smell. Usually, during a cold, you have hyposmia. The most common causes in order of anosmia are as followes: 1) Post-viral injury/damage 2) Trauma breaking the nerves 3) Chronic inflammation, like from allergies, covering the olfactory nerve 4) Far less common, tumors or masses. Also, one thing awesome, if the nerve is damaged from trauma or an infection, the olfactory nerve is the only cranial nerve that can grow back, so the doctors I work with are know recommending olfactory retraining, sort of like PT for the nose. It has worked pretty well.

You are a life saver... we have an Anatomy teacher that basically disappeared and abandoned her students and I have been able to provide them content through your videos. THEY LOVE YOU! Thank you!/

holly hell.. i cant believe i actually followed through the whole thing .. lol ..ur a gem. THANKYOU

This is excellent work mate! Keep it up!

wow, my university made us just remember the lesions from 5-8 blindly without any explanation. You have made everything clear, cannot thank you enough! 🙏🏻 , please keep up this channel! 👌🏻

I always double-check my lessons about Optometry with your channel. Thank you so much from Sri Lanka

trust me ive watched several videos about visual pathway and lesions but yours is the best i couldn't understand till i watched yours THANK YOU SO MUCH you are saving a lot of peolple here ! God bless you

This is timeless content - always find myself coming back when i need some refreshing

I literally cheered because i finally understood how the various lesions impacted on vision. maybe you saved my ophtalmology exam next month!

Every single video of yours is awesome.. First year med student here..and for me you're nothing less than a blessing..

I am neurology resident and you are my official reference for neuroanatomy, this is unbelievable you are a legend

Your the man! Better than my professor for anatomy by a long shot!

There are not enough words to describe how much i appreciate your efforts. THANK YOU

this is excellent. i have Left homonymous hemianopia due to a hemorrhagic stroke because due to a ruptured PCOM artery ...i had endovascular coiling surgery with stent. i developed hydrocephalus hemorrhagic transformation among other complications. october 2022 will be one year/

I'm an international student in Germany, majoring in biology (well not a medical student). German is not my first language and i feel like I always need more time to understand what was taught in the lecture than other fellow students who are germans. I'm currently taking Physiology as a module this semester and I just can't stress it enough..how grateful I am to have found your channel 🥲thank you so much!!

U R A Blessing to medical students

Sam Webster was number one until I watched your videos my friend. The detail into which you go is awesome! Kudos!

*Each time I watch a video of yours, it makes me wanna demand my money back from my Uni so I can give it to you 😭😭😭* You're a Godsend. Thank you!

U r a brilliant genius teacher....this video suddenly gave me the energy to study hard nd understand the basics....u r soo awesome...loved ur way of teaching...thank u soo much Sir😇💙

This is so freakin brilliant! Heard this so many times from so many people, this is the first time ever that I actually grasp the whole thing. Thank you so much!

Damn, I would never get this information from my university professors, thank you so much!

I actually fucking love you, thank you so much. You thoroughly yet concisely explain everything perfectly and I completely get it now. This deserves wayyyyy more than 5k views

I'm blown away by your ability to unpack and communicate such a potentially intractable subject (bad pun). Your choices of when to use "Nasal/temporal" vs "L/R" were astute, and kept left/right confusion to an absolute minimum. You have helped a lot of people with these videos. THANKS!

You're doing a great job Zac. 30 minutes and optic tract is clear. Can't thank you enough. Be blessed sir!

All of your videos are soo helpfull. I dont even have to pick up my book. Thank youu. This all means alot.

I was never able to those lesions posterior to the optic tract. It was always a frustrating point. Thaank you sooooooo much for finally clearing it up! Feels amazing to know I finally understand it :-))))

اقسم بالله انك شنب و احسن من الدكاترة الزبالين الي بيدرسونا

You made everything so much easier!!!! Thank you

Make more videos on pathology, pharmacology, and micro as i’m heading to my 3rd year and i need you to be my teacher in that year too. Love your work.

Zach you are amazing mate! I am a proud member of Ninja nerds and a subscriber. Once you go Ninja, you don't turn back

Oh my God! What an explanation! i UNDERSTOOD THE conecpts vry clear..Thank U so much Sir U make medical Students life easier! Keep making more Videos Sir

What a guy you are. Thanks for the precious help

Really, Well done!! This one of the best videos I've ever watched at my whole studying experience!!👏👏👏 I learnt something after a hundred of repetition OMG! Thank you so much 🙂🙂✌️💪💪

You are just awesome! Words are less expressive! I wish you were my medical college's professor!

Optic nerve cranial nerve- Left to right Right to nerve Temporal hemi retina Nasal hemi retina. Optic nerve Optic chiasmata Optic tract Lateral geniculate nucleus in THALAMUS.6 layers I/L 235. C/L 146. Optic radiation. Striae cortex primary visual cortex. Perception. LESION- Optic nerve- mono ocular blindness. Optic chiasma medial aspect- bitemporal hemianopia. I/L- binasal hemianopia. Right optic tract- left homonymous hemianopia. Right Baram loop/ Superior tectal fibers- Left inferior quadrant hemianopia. Left inferior rectal fibers-right Superior quadrant hemianopia. Right optic radiation- Left homonymous hemianopia Posterior cerebral artery- Left homonymous hemianopia with macula sparing. Thank you sir

Ninja Nerds! Beautiful! Sweet! Stinking! Deal! Thank You for teaching us!

You guys are the single best medical content lecturers out there! I am wishing you guys all the luck of this world in your future endeavors! Greeting from Greece!

thank you so much for for putting out this video . It saved my life

Thank you! This is amazing I really appreciate this effort, you made everything crystal clear.

never knew neurology could be this fun when u actually got a good teacher, thanks alot

Your videos are amazing!!! They're helping me a lot!!! Right now I'm going to each video you made about the cranial nerves, because my upcoming exam is soon. Your explanations are very good and understandable and your drawings are also perfect! Thank you very much for your nice explanations, pictures, efforts, etc. I really appreciate your emphasizing methods through many repeated sentences and that you sometimes shortly! go back to already discussed structures. I'm enjoying watching your videos and learning a lot :)

You are such a help Lots of Love Zach ❤

Amazing work...God bless you sir.Love from Pakistan

Purple💜💜💜, I like the way how you play ć colours, I just now ordered a purple tab from Amazon, and hearing purple out of your mouth, put a big smile on my face . 😊

OMGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG I LEARNT SOMETHING FOR ONCE!!!!!!!!!!!!!!!!!!! THANK YOU

Thank you Thank you THANK YOU!!!!!! You should be a professor!

The only criticism I have for this video is that the lesions along the Meyer's Loop & Baum's Loop should be referred to as a quadrantonopia (not a hemianopia, as hemianopia refers to blindness in half of the field)

You are something really supernatural Zach!

Holy Sweet Goodness! Just learnt a lot from this. Recommended by a friend. Thanks bro.

Amazing teaching method.i came here to find a good way to teach my students

you are my optic nerve

Thankyou for this channel. Really help me who study with audiovisual👍🏻👍🏻

Oh my god! There is no better video on the internet for this damn topic!🤌🏻 I can guarantee that! And ofcourse no better teacher for these concepts! Great work sir!❤🎉

your vast knowledge blows me away...when did you first start studying all this?

mind-blowing lecture😭😭😭. Could never learn so much from my uni. greatttttt workkk😭😭👍🏻

though i cannot pay them through direct funding but i watched twice ads not skipping it so that i might help the team thanks alot

Wow i never understood this before. Great work

Hi, I reallyyyyy love your videos. I think you are so clear and effective at explaining concepts that the professors at my university struggle to express to students. Especially since I have been online this semester, your videos have been a crucial part to my education. Would you consider in the beginning of your videos allowing for the screen with all the blank templates you drew out prior to starting the video to be recorded just a few seconds without you in frame so, we can screenshot and follow along with you as you draw it out? Thank you so much!

i cant tell you how thankful and grateful I am.

Thanks so much! This was very helpful in my review of the visual pathway and VF defects!

perfect. need no other video to understand the visual pathways and associated lesion. thank you

Thank you so much! This was really helpful :)

Damn!!!!! The finest explanation of visual pathway on the internet. Thank you so much man......Great content. Keep it up.

My brain cells gave up on lesion 5 and left my brain completely at lesion 7 😭😩

❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤ Such a indigestible topic Still such flawlessly explained

Great as always. Big big big thanks from Uzbekistan.

Sir you are the best ever, please complete autonomic nervous system and many topics in embryology thanks, you are highly awesome

I learnt the visual pathway in my first profession and now I'm in an internship and wanted to revise, use many other videos but still your lecture made it simple and clear all my doubts as clear as it was in my first profession.

"I'm sorry, but that's how it works""😂😂😂💜

How can I really express How much i am grateful, thank u a lot 🖤

You are so awesome! Pls do make a video regarding spinal cord lesions. Thanks much!

I'm so thankful for your existence! I mean it. I don't know what would I have done without your help.

"Turn me over and tickle me twisted" lmfao

You are the hero for all medical students💕 شكرا ع مجهودك 🌹

oh boy.. this is just the optic nerve.. wonder what the glossopharyngeal nerve is going to be like! An old neurobiologist told me one time that we have 12 cranial nerves and it takes a minimum of 12 years to learn them all. That statement is correct!

You explain it way better than my teacher does!! Thank you very much

I wish my lecturer was this informative and good. She just comes to the lecture and changes slides. A new lecturer arrived yesterday, he was decent but still not this good.

Love your amazing work.. I'm very thankful and grateful to find this channel. Thank u so much prof.. And his cool too.. ❤

Everything was clear but the lesions were somewhat difficult for me to understand. Otherwise good job . New subbie

I am speechless, you are just the best!

Really love your presentation. There are a few mistakes though. Quadrantic field defects are known as "quadrantanopia" and not 'quadrant - hemianopia'. Hemi means half.

Very beautifully & clearly explained...all doubts cleared

Personally I think you should've stuck to nasal and temporal. I appreciate your intent behind it but I think that students should get used to nasal and temporal ASAP, no matter how confusing they may be, because that's how it will be known anywhere else. Also, the left VF of the left eye may be even more confusing in future since it's 'left of left', 'right of left' etc.

Thanks man. You’re a true lives saver

You got patreon bro? 🙃

thanks 1000times is not enough..i amfrom BANGLADESH and May God bless u ...pls carry on.

plz make a video of tracks of spinal cord 😢😢😢

Man it's amazing how you cover up everything necessary for the each topic. You are doing a holy job thank you so much !!

Thank you put I think you have mistake in 6 and 5 lesion!!

thank you for making the reading interesting for me

You’re indeed the boss when it comes to teaching

These videos are really long, BUT THE DETAILS ARE LIFE SAVING

And the Best teacher award goes to... Thank you man 👊🏻👏

You juste saved my life here ...thank you man ! big-up

You deserve more than a like and a comment... great hardwork and thanks ,, hope you the best ..

No words........ 🙏I think i don't want to revise or study this again cause yr the master of medicine🔥