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BrainWaves #159 The pupil can be a great teacher

MedLink Neurology Podcast is delighted to feature selected episodes from BrainWaves, courtesy of James E Siegler MD, its originator and host. BrainWaves is an academic audio podcast whose mission is to educate medical providers through clinical cases and topical reviews in neurology, medicine, and the humanities, and episodes originally aired from 2016 to 2021.

Originally released: March 19, 2020

They say the eyes are the window to the soul. Well, maybe. They also happen to be the first organ we (perhaps, unknowingly) examine whenever we encounter a patient. This week on the program, we build on the prior episode about anisocoria (featuring Dr. Ali Hamedani, episode 74) and discuss the examination of the pupil, and all that these 3-5 millimeters of tissue can teach us.

Plus, some Dad jokes at the end...

Produced by James E Siegler. Music courtesy of Chris Haugen, Daniel Birch, and Lee Roosevere. Unless otherwise mentioned in the podcast, no competing financial interests exist in the content of this episode. Sound effects by Mike Koenig and Daniel Simion. BrainWaves' podcasts and online content are intended for medical education only and should not be used for clinical decision-making. Be sure to follow us on Twitter @BrainWavesaudio for the latest updates to the podcast.


Bouffard MA. The Pupil. Continuum (Minneap Minn) 2019;25(5):1194-214. PMID 31584534

Liu GT, Volpe NJ, Galetta SL. Neuro-Ophthalmology: Diagnosis and Management. 3rd ed. Elsevier, 2018.

We believe that the principles expressed or implied in the podcast remain valid, but certain details may be superseded by evolving knowledge since the episode’s original release date.

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