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.
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
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 @ 8:11 pm
gr8 job doctor..
very simple and efficient illustrations..the videos is so helpful ans handy..
i wish u the best in u’r life
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
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!
Thank you doctor, i realy got the benefit…..thanks again
acan’t express my Greatfull towerd you
Comment by Mushabbab — November 3, 2009 @ 10:58 pm
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
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 Syed Junaid — January 26, 2010 @ 4:12 pm
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 @ 1:41 pm
why this video not work with me..