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Introduction to Glaucoma Video

length: 21:17 minutes

This introductory video covers the basics such as open-angle and closed-angle gluacoma. In addition, treatment options, pressure-concepts, and exam findings are shown with full-motion video clips. Overall, I think you’ll find this lecture entertaining.

Screencaptures from this Video:

This video begins with a definition of glaucoma … unfortunately, there are many proposed mechanisms and we don’t truly understand this disease.

To understand glaucoma, you must understand how aqueous fluid is produced and drained from the eye.

One method of pressure measurement is with the applanation tonometer built into the slit-lamp microscope.

The applanation mires should touch – this lets you know that you’re flattening the proper amount of cornea.

The cup-to-disk area increases as less ganglion nerves are traveling through the optic-nerve.

Small cup, and bigger cup.

This Goldman perimeter lets us map out visual fields.

Pachymetry is the measurement of corneal thickness, and works through ultrasound.

Some people have thick “truck-tire” corneas that feel hard at any pressure.

Other people have thin “bicycle-tire” corneas that feel soft.

The chamber depth can estimated with a penlight.

Total internal reflection limits our view of the angle and the trabecular meshwork. A goniolens breaks the cornea-air interface, and allows direct visualization of these structures.

This gonio-video demonstrates the main structures and the trabecular meshwork can be seen as a faint line.

One surgical treatment for glaucoma is a tube-shunt drainage device.

With pseudoexfoliation syndrome, a basement-membrane material forms on the anterior lens capsule. As the iris rubs against this material, pigment is scraped off that clogs the TM.

With bad diabetic retinopathy or a central retinal vein occlusion, VEGF can float forward into the anterior chamber and lead to neovascularization of the iris and angle, creating a dangerous glaucoma.


[…] PDF version (print quality) Video lecture […]

Pingback by » Introduction to Glaucoma (Ophthobook.com) — December 22, 2007

[…] PDF version (print quality) Video lecture […]

Pingback by » Beginner’s guide to the Retina (Ophthobook.com) — December 22, 2007

it is very usuful way of learning by waching this video.

Comment by arif — August 9, 2008

i want video on different type of slit lamp technique ,needed for my exam.

Comment by iftikhar dr ophthalmology — February 4, 2009

Please tell me about the parts of the chamber when you take the gonioscope: Schwalbe line, trabecular meshwork, scleral spur,and the ciliary body . What is way differ bettween them to confirm the stage of close angle glocome

Comment by Huyen — February 18, 2009

Hello Dr, congratulations for this website, it’s the most comprehensive resource in ophthalmology. It took me shorter time to understand many subjects than at the medical school!!!

Comment by Madeleine Juanche — March 5, 2009

gr8 job doctor..
very simple and efficient illustrations..the videos is so helpful ans handy..
i wish u the best in u’r life :)

Comment by ahmed — March 6, 2009

love this video as i always like lectures with pictures demonstrating the things..student of MBBS .. i had to study the glaucoma from my boring and complicated notes but when i saw this video it became so clear to me that i just read my notes and i was understanding all the things so clearly….thank u so much…wish all the teachers explain things like u

Comment by aries — March 10, 2009

waw :) amazing video this what I need ..very useful
thanks a lot..

Comment by Optometrist/ Huda islam — April 24, 2009

oh..no.. :( why this video not work with me..
pleas can you send it to me at my emil..I really need it.

Comment by Optometrist/ Huda islam — April 24, 2009

ok..now its work!I do not know why yesterday didn’t open with me!!!

thank you..

Comment by Optometrist/ Huda islam — April 25, 2009

The videos are excellent, however the glaucoma one stops at 13 mins 32 secs for some reason. Great learning tool

Comment by David Sparksman — May 4, 2009

wow!!!mind-blowing video.. very helpful

Comment by Chirag — May 16, 2009

Hi, these videos are awesome. Thank you so much! For some reason the glaucoma video stops at 13 minutes 32 secs, as mentioned above…

Comment by Kristin — May 26, 2009


Comment by ann MSII — July 13, 2009

really nice nd highly informative……………

Comment by isha singla — August 22, 2009

Incredible Videos….should be incorporated into all med schools curriculums

Comment by Mike — September 27, 2009

this is so helpful and thanks so much for your contribution to our education. i am sure we all benefit from this tremendously. thank you again for doing this!

Comment by summer — October 5, 2009

Thank you doctor, i realy got the benefit…..thanks again

acan’t express my Greatfull towerd you

Comment by Mushabbab — November 3, 2009

That’s an interesting video. Thanks alot, I’m a doctor. I teach and educate student in mylitary acedamy of medicine. I will use your video to teach my student

Comment by bstrung — November 6, 2009

This is a very usefull lecture for students, residents and practicing doctors. Thank you very much for your time and dedication, you made it simple, understandable and practical!

Comment by Katie — November 9, 2009


Comment by Olivier — November 22, 2009

gr8 video!!!plz do add a note on d visual field changes in glaucoma..d rest of it.. jus tooo gud…

Comment by anne — December 7, 2009

its superb!!!!!! thx doc

Comment by zaheershah — December 23, 2009

its realy very good explanation thank you but i wish if there is such videos for all diseases

Comment by hana — January 3, 2010

what is blepheritis and what is the term for the inward growth of eye lashes

Comment by Richy — January 16, 2010

Glaucoma never made sense to me until today!

Comment by Syed Junaid — January 26, 2010

Hello, I really enjoyed watching your video about this topic and I would like to ask if you could send a copy of this to my email address since I would like to show this during my reporting on this topic.

It would really help me a lot to have such permission to have this video incorporated in my report. It is so comprehensive and I really like it a lot

Comment by Marie Rhidessa Coloyan — February 8, 2010


Thank you very much for such a wonderful video. Can you give me permission to incorporate this video in my library.

Comment by Srinivas — February 20, 2010

thanks for this good video….I understand many things easily
thank you very much

Comment by Rania — April 12, 2010

Outstanding :) , THANKS A LOT !

Comment by dr-HAM — April 30, 2010

Thanks a lot for this website!!! I’m an student of medicine from Spain, and I understand differnces between open and close glaucoma seen this wonderfull video.

It’s really comprehensive, and your english is really easy to understand.

Thx for your job.

Comment by Dr.Gus — May 23, 2010


Comment by NAJLA — June 21, 2010

This is great!!!! taught me more that lectures at medical school :D

Comment by AnnZ — June 30, 2010

Thank you so very much. This is exactly what I needed to understand. I appreciate you going over the rudiments and helping me to grasp the basics and later expand. Thank you is not even adequate for the light bulb that finally went off for me. your explanations and visuals are not only interesting but easy to retain. I can be taught!

Comment by elise — July 27, 2010

My favorite Ophthalmology e learning site on the internet. Comprehensive, subtle and yet brilliant! Thanks so much!

Comment by Raviteja Innamuri — September 27, 2010

I love this site :)
Im gonna recommend this site and your book to everyone !!
Thank you so much.

Comment by Abby — November 5, 2010

thanks a lot

Comment by amgadata — November 14, 2010

This is just amazingly perfect thank you and may God reward you with the best :))

Comment by Maria — December 14, 2010

I just saw this video once. but i can’t anymore. i have tried may be a hundred times refreshing one in the morning, afternoon and evening since 2 days but i cant see the video. then i figured out that the problem was with the website where you uploaded the video. (vimeo.com). Please i have a request if you can upload to youtube or any other video website before 29th of december because i have a presentation on glaucoma. and send me the link. thankyou a million times.

Comment by Najeeb — December 26, 2010

This is an excellent video. I can’t seem to sign up.

Comment by E. Morgan — January 4, 2011

brilliant video!! thanx for sharing! :)

Comment by sarah — March 26, 2011

my god…awesome work by the doctorrs….an overview of glacoma has been captured….a million thanks to the contributors r thier work….

Comment by aswin — April 11, 2011

Please help !! The video is not working. ,!!

Comment by Loza — April 22, 2011


Comment by JC — May 6, 2011

Simple, to the point, brief overview of a complex entity. Brilliant work!

Comment by AMGG — May 14, 2011

very helpful
keep it up
you did a great job.

Comment by MUFRACACA — June 9, 2011

Hi Tim-
Thanks for the wonderful videos and chapters!

You mentioned you had lasik? How myopic were you? I havent’ heard many ophthalmologists who get lasik on themselves.. i’m a -9.00 in both eyes- it seems my options are IOL or nothing?
would love to hear your opinion on this controversial topic!

Comment by rm — June 19, 2011

Very nice. Very educational. And yes, entertaining lecture too :)

Comment by Sui — July 19, 2011

Thanks alot

Comment by Abdul — October 4, 2011

Great job Dr.Timothy. Thanks a ton.
In the above lecture u mentioned that u had Lasik done. In case of Myopia the axial length is already more and in Lasik reshaping of Cornea is done by burning certain areas of it. I understand that due to certain pressure the axial length increases causing myopia. Does the chance of getting myopic power againg increases after Lasik? Please guide.

Comment by Anant — October 14, 2011

thnk u

Comment by aamir hussain — November 25, 2011

i am not able to assess the video,can u help sir

Comment by tarun — December 6, 2011

thanks a lot sir

Comment by t.k — December 17, 2011

Thank you so much for website but the video is not workin.please help me

Comment by masoumeh — December 24, 2011

Thank you for your wonderful idea, I hope I have a teacher like you, the topic is well explained.Thanks again

Comment by LIO — January 1, 2012

this is an excellent stuff. but the problem is that none of the videos is running. how can I get them or watch them live

Comment by abdullah khan — January 23, 2012

This is fantastic, i dont know how to thank you!

Comment by Wiggy — April 21, 2012

thanks Dr soo much this is a gr8 jop

Comment by mannosh — May 17, 2012

i like it very much.good job sir.

Comment by rahul navani — July 21, 2012

glaucoma video is awesome too!! lovely lecture! you’re an awesome lecturer sir! thankeew.. =D

Comment by medicalstudent — August 18, 2012

thank you very much with this video ! 2 months ago there was concluded that I have glucoma in 1 eye , only still can not understand why I can see 1 day only for 50 % procent through this eye and the next day is much better to 90% and nearly no black fields ! Any idea about this ?

Comment by hans — September 5, 2012

amazing thanks alot

Comment by sally — October 5, 2012

hello sir,im in luv with ur lectures.thanks a million for putting your time and effort to make these wonderfull, entertaining and very informative lectures.looking forward for many more lectures…..
god bless you for helping med students like me…

Comment by rose — November 12, 2012

i just love this cartoonic vision videos make us v.easi to understand ophthalmology…

Comment by mehvish — February 20, 2013

i just love this cartoonic vision videos make v.easi to understand ophthalmology…

Comment by mehvish — February 20, 2013

Thank you so much .. I may love Ophthalmology becaous of you :)

Comment by ِEman — March 12, 2013

[…] Glaucoma […]

Pingback by Do you always like to learn new things? | Rochester | Hilton | Ogden | Sweden NY — April 2, 2013

I can’t watch the video frim An iPad…. Can you help me?? Thx!!

Comment by Anyela — April 13, 2013

happy to learn dis way…nice

Comment by nice... — April 18, 2013

nice presentation.:)

Comment by dr isha — June 2, 2013

Thank you so much! Finally someone explains things in a simple way :)

Comment by N — July 19, 2013

Video not play on my mobile I have Micromax canvas 2 help plz

Comment by ankit basoya — September 29, 2013

very effective

Comment by Riddhisundar Samanta — November 8, 2013

Amazing! Thank you doctor

Comment by Hanan — February 14, 2014

thanx,for great video

Comment by samra — June 11, 2014

i cant thank you enough for making these videos. Im actually liking studying eye now.
Thanks alot doc!

Comment by Anser — January 13, 2015

please if you can email me this video. it seems to stop at the tonopen exam every time. love your work thanks a million

Comment by Tania — March 17, 2015

Thanks a lot! Excellent video, Easy to learn. Vevry-very useful.

Comment by Andrew — September 19, 2015

wow .. I loved your biriliant way of explanation through the combination of pics & videos plus your simple comprehensive words .. simply you are outstanding Dr .. thank you

Comment by Mohamed — April 16, 2016

Thank you so much for all your wonderful lectures! I am a medical student in Nepal, so you truly are helping students worldwide. Really appreciate the time, effort and energy you put into your lectures.

Comment by Shikha — April 20, 2016

a great and very useful video , thanks a lot .
keep going please !

Comment by Dr.Ali Maarouf — June 12, 2016

I’ve spent the last couple of hours on your wonderful site watching video after video after video and had to leave a small note to thank you Dr. Root and anyone else who’s a part of this project. It is so helpful for me, even as a 3rd year OD student. I cannot stress enough how valuable all of your hard work is and how much I’ve benefited from it so far. I wish you all the best and hope that you continue this project because words cannot express fully how much I appreciate all of this.

All the best to you Dr. Root. May you be well and in good health always.

Comment by Opto Student — July 11, 2016

Thank you so much for these amazing videos!!!

Comment by Sana — August 21, 2016

Great job!! Thanx alot for all this

Comment by Naresh — January 20, 2017

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