Dorsal midbrain syndrome, Parinaud syndrome

Collier's lid retraction sign, light near dissociation, upgaze paresis, convergence-retraction nystagmus, sunsetting eyes

[@Spectacles641]

Fantastic! Clearly one of the best teachers I have ever seen! Hope to see more videos. Thank you Sir.

[@omersharaf583]

He has extraordinary approach, he is different level,the GOAT of neuro, op

[@drssandm]

You are the best teacher of neuro-ophthalmology known to me. God bless you! Thank you for inspiring!!!

[@MrLoulou226]

What a legend! Thank you so much.

[@charlesforsythe5303]

Thank you Dr. Lee for these videos. You make the pathways very enjoyable to learn about. Can't wait for the next video(s). Thanks again.

[@drmofazzal8582]

I can hear you 24×7. Such a brilliant teacher

[@rachedzeghlache5555]

Such a terrific teacher. Not even in my neuro block anymore but I still watch his videos because he's awesome

[@margheritabarzilai703]

Sir your lessons are just amazing. Pub med/internet/books reaserch was driving me mad but when I found your videos everything got simple.Halleluja! Thanks!!!!

[@OurAdventureBook]

Saw a patient who was textbook classic for Parinaud's syndrome. Amazing! Thank you for so clearly explaining.

[@xDomglmao]

Wow, I have the feeling you're gonna make my neuro rotation a lot easier

[@cecilia1999]

The best explanation that i v ever heard. Thank u!

[@neuroxplorein]

If I need the best explanation of neuro-opthomology signs and pathways, I go to this channel. Honestly no need to supplement (except for examples in real patients)

[@mb5101]

Amazing! You are the best teacher!

[@humzaifat1]

Awesome explanation ! I did not find the reason in usual med ophthalmology books, for sunsetting sign in hydrocephalus, and correct explanation of vertical gaze center, which most book so far I have seen writes it to be within the superior colliculus, rather than thalamo-mesencephalic junction. Awesome sir, thank you

[@marahal9657]

what a legend ! thank you 1000 times from syria 🌹

[@skdutta6634]

Thanks sir for clearing the concepts🙏🏻

[@kakossniper]

Bloody brilliant

[@zeeahmad1343]

Stunning

[@heisenbergdalton332]

Amazing 💯

[@iraqiwarriors13]

فديته احسن شرح يشرح 🤩

[@berkaygazikara]

Thank you, for sparing your time to explain this pathology, it is really an interesting "syndrome". It can be seen in pineal gland masses in the pediatric age group. But any problem affecting the midbrain can present with Parinaud Syndrome.

[@brainman709]

Amazing!

[@dhakshimuhundhakumar4627]

Wow. So helpful - thank you!

[@safakursun]

Thank you very much!

[@adonkhachik7556]

Excellent video ! Thank you.

[@SJRP2022]

Thank you so much for these awesome lecture, it really helped me alot in undestanding this.

[@user-nn2lc8ei9x]

Legendary explanation 🙏🏻

[@waasayhassankhan5469]

Brilliant!! more power to you professor.

[@konakona6215]

dude is incredible. what a teacher

[@Hoenhoff]

Amazing, THANK YOU!

[@sisihancouple7057]

Crystal clear!!!^^ Thank you Dr!

[@fannyirinapimentelmarmol8613]

WOW, EXCELLENT!!!

[@snekjuce]

One of the dopest humans.

[@28austen]

excellent, fantastic teaching - thanks for posting

[@youcefelitim4155]

Amazing thank you

[@hadipourshanbeh1767]

Deeply appreciate

[@haneen9445]

Well explained ! Appreciate it

[@riiza1241]

You're great dr ... thank you

[@golnooshmahmoodi5913]

Thank you very much for your nice explanation. Hope to be an ophthalmologist near future!!

[@bayartuev]

Спасибо, лучшие лекции

[@monikafilipska1182]

Thank you very much!!! Great explanation

[@pixie89]

Thank you sir 🙏

[@meowmeowone8479]

Awesomeness!!!

[@drdebocherry]

Love your Videos! Quick & Dirty!

[@kanasinlaemlukworakul2301]

Thanks! That’s really help me a lot!

[@firasarshid7280]

thank you, super Explaination

[@mohammad.shokrolahi]

thank you

[@ikjotsingh4353]

Thank you

[@patelmruganks]

salute you , sir!!!!!!!!!!!!!!!!!!

[@charlesforsythe5303]

Question: since the rostral midbrain is being compressed, why is there overexcitation of CN-3 and causing convergence-retraction nystagmoid symptoms? I guess what I am asking is can someone please reexplain this. Thanks.

[@ashwinikini243]

There is loss of supranuclear normal inhibitory response.

[@demomann9126]

TBH, it's not a very good explanation of why convergence and retraction occurs with upgaze attempts. Why would the medial rectus pull, unopposed, when you try to look up?

[@MrRyanThaFitz]

Nice Video :)

[@tomcruise9317]

Lesion is there hpe can 3 rd nerve fire

[@shashanksingh8327]

Why some of the videos are private? How can i watch them? They are really awesome. Please help

[@SuperScandar]

what about firing of the inferior oblique muscle? does it show any clinical sign in the Parinaud syndrome?

[@wr44]

Can a unilateral lesion (eg in MS) also nip the trochlear fibres leading to contralateral superior oblique palsy - i.e contralateral hypertropia?

[@drakk2706]

So no 3rd nerve palsy as such?

[@danielrblend]

Had a pineal cyst removed earlier this year, was curious what role the mid brain plays in chronic photophobia, if any. In my context, photophobia to me is irritation by light which causes eye pain, headaches moving front to back, sometimes ear and head pressure, and nausea.

[@TheDoc4kids]

Not migraine?

[@danielrblend]

@@TheDoc4kids You could classify it as that, but its 24/7 unless I wear digital block glasses non stop.

[@karthikvinaymahesh5406]

In pineal gland tumors or cyst, there are abnormalities in upgaze and pupillary responses, especially inability of the pupils to constrict to bright light . this can explain the photophobia if your pupils are constricting enough to avoid bright light

[@antoniusarifin7193]

Dear dr.Lee, what the best treatment for this ? Is there any exercise? Im suffered from this parinaud syndrome , please your advice🙏

[@harkarandeepsingh9071]

Hello Sir. Thank you for all your amazing lectures . I am having a little difficulty understanding the vertical gaze pathway . Can you explain that.

[@vineshmanohar2060]

Harkarandeep Singh Even I din’t understand that! I googled it and I’m even more confused now!

[@classrealkimify]

Something is wrong with playing this video..

[@mahamad3091]

Is horizontal gaze affected ?

[@ashwinikini243]

Horizontal gaze center does not reside in the dorsal midbrain.

[@syahirashariffudin7142]

thank you sir .. i ve just seen 1 case of parinaud syndrome today and thinking where shud i learn it so that i can get clear picture of what parinaud syndrome is. and i ve found it here. thanks again..

[@appleapinado877]

Sooooooooooooooooooooooooooo.

[@zamiranajera5479]

Hay no nevert nevert

[@appleapinado877]

Uoo

[@stephaniecheng5631]

wow, finally some Chinese face, 希望您了解中国文化