M-Eyeball How-To: DIY Model Eyeball for Medical Students


– Hi, my name is Jacob. I’m a medical student at
the University of Michigan Kellogg Eye Center. Today I’ll be showing
you how to build your own model eyeball that you can use to practice indirect ophthalmoscopy instantly. It’s a very simple model. It’s made out of a ping pong
ball, some tape, some marker. I use a modified coat hanger
to put it on to the… Like so. It’s very simple, it’s very cheap. It may not be pretty,
but it gets the job done. At this stage in your training as a medical student
going into ophthalmology, it’s very important that
you practice your dexterity and visual spacial orientation. That way when the time comes
to see your own patients and make your own diagnoses, you’ll be much more comfortable
with your physical exam. So let’s go ahead and get started. You will need a ping pong ball,
a box cutter or sharp knife, a nail, a marker, a lighter,
some tape, a wire coat hanger and a wire cutter/pliers. (classical music) Hopefully that wasn’t too bad. Just a few more things. When you want to practice
indirect ophthalmoscopy, tape a very small piece of
cardboard to your model eyeball. Now you have a base. You can put it on any tabletop
or countertop and practice. One thing I really like to do and you may have seen it in the video is I paint every quadrant
a different color. This allows me to better conceptualize how the lens inverts the image. By that I mean I look at
it with and without a lens and I notice how the positions change. One other thing you can do
is add 3D features to it. An optometrist here
recommended I add red string to the surface to simulate blood vessels. Although they’re clearly
not blood vessels, what it does is it offers me
different planes to focus on. I can focus on the eyeball,
I can focus on the string and I can focus on the adhesive. Three different planes. It’s very good practice. I would encourage you to do that for the back of the eye as well. Either way, get creative,
try different things and challenge yourself. Have a good time. Thank you. (classical music)

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