Ear infection

This is a video endoscopy comparing a normal ear to an ear with a middle ear infection (otitis media).  Courtesy of the Arizona Sinus Center https://www.arizonasinus.com.  Notice the normal ear first.  The ear canal is clear and the ear drum (tympanic membrane) is translucent.  The ear drum reveals a reflection of light (light reflex).  The space behind the ear drum (middle ear) is filled with air.  Notice the second ear which has a middle ear infection (acute otitis media).  The ear with otitis media reveals a bulging ear drum.  The middle ear cavity is no longer filled with air.  It contains a yellow-white substance (purulence or "pus") indicating infection.

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• #ear_anatomical_structure
• #otitis_symptom