Exploding Eye Lecture (Video)

Here is our latest lecture on eye trauma, where I discuss many causes of ocular trauma: heat injury, projectiles (airsoft, paintball, bb gun), chemical burns, laser, and explosive trauma. You can watch this lecture in high-resolution 720p by changing the settings to "HD" in the player below (or by watching the YouTube version in HD mode) or by downloading the 720p file below. This is a graphic presentation … so you might want to watch in full-screen mode for the full effect. Enjoy!

length: 28 minutes

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ExplodingEye.m4v (229 MB)
ExplodingEye720p.m4v (1000 MB)

SCREEN SHOTS FROM THIS VIDEO LECTURE:
(comments below)

The lecture begins with a description of the various heat-protection mechanisms of the eye. This includes the location within the skull, heat conduction of vitreous, and the overlying tear film.

Sparkler flames can cause significant burns secondary to the intense heat produced by burning magnesium.

Projectiles, specifically BB, airsoft, and paintball guns are covered. We examine the kinetic energy of flying pellets and perform "penetration" testing on pig eyes for a more graphic demonstration.

Acid and base injuries are compared … including an experiment dipping eyeballs into chemicals to show the difference between coagulation necrosis and gross liquefaction of tissue.

The power of light energy is discussed, including a simple fresnel lens experiment and surgical phototoxicity. A high-powered laser light is used on a pig eye.

Firecrackers and m80s are set off near the eye to demonstrate concussive blunt trauma. Many blunt "open globes" create expulsion at the limbus where they are easy to detect.

Globe ruptures can also occur at the insertion of the rectus muscles. This is particularly tricky to repair, as this involves cutting back the conjunctiva and exploring under the extraocular muscles.

21 Comments

Awsome lecture! Loved it and kinda gory at the end.
One thing though: I’m having some problems posting comments: after posting, I get an error and can’t tell if its posted or not.

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Comment by Tom — July 12, 2012

Hello Dr. Tim Root,

Thanks so very much for yet another explosive video! Very nice one indeed!

Pls kindly post video on BINOCULAR INDIRECT OPHTHALMOSCOPY. This technique NEEDS YOUR EXPERT BREAKDOWN ON VIDEO.

Thanks in advance sir!

Comment by Ozone — July 15, 2012

thanks!easy to understand!

Comment by preethi — July 15, 2012

i love u with deep respect sir.
I wish u could come to uganda and be my tutor.
I love u

Comment by othieno ivan — July 15, 2012

Just perfect! You always know, how to amaze your listeners :):) Your efforts are great!

Comment by Anton Vurdaft — July 15, 2012

wow

Comment by dd — July 15, 2012

Fantastic videos as always. Much appreciated. I may not love you as much as Othieno Ivan, but I certainly have great respect for you.

Comment by Bill — July 15, 2012

Excellent lecture & show Doc. Thanks for enlightening. Very informative and helpful.

Comment by Anant Vikram Lakhotia — July 16, 2012

Excellent lecture & show Doc. Thanks for enlightening. Very informative and helpful.
Anant

Comment by Anant Vikram Lakhotia — July 16, 2012

Excelent lecture!

Comment by Ms. pink — July 17, 2012

thanks，helpful

Comment by zhouyingming — July 21, 2012

Thank you Dok Timothy. From the Philippines

Comment by Daryl — July 25, 2012

Tnx Dok Timothy. From the Philippines

Comment by Daryl — July 25, 2012

I am teaching in India and love your lectures.I show them to my residents and we all enjoy together.A wonderful way to teach ophthalm ! you have taken so much efforts and it is definitely a unique project.Keep it up.

Comment by Prof Rekha Khandelwal — July 25, 2012