23: Body Oddities

Instead of a case this month I have a number of questions regarding odd medical observations.  Interstingly most have something to do with the eye.  If you have your own that you would like to share, please submit a “comment” below.

Question 1:  Using your ophthalmoscope you notice that not only is the exam amazingly easy, but that the retina is a beautiful patchwork of blues and greens with red arteries and a white optic disc.  What condition does your patient have?

Question 2:  How can you see the arterial ramifications of your own retina?

Question 3:  How can you use your hands alone to see clearly underwater, as if you had a mask?

 

Scroll down for case answer

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ANSWERS

Question 1: Your patient is your cat or dog.  Take a look.  Very cool 

Question 2: Place a pen light on your closed eyelid laterally and vibrate it.  You will see the movement of the shadow your arteries cast on the retina.  The rapid vibration is too fast for the normal accomodation  

Question 3: This one is technically very difficult.  Use your hands to make an air tight “visor” over your eyes then breath out bubbles of air into this visor to fill it.  With air in front of your eyes, you see like you had goggles or a mask on.

 

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