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The Eustachian tube is a narrow tube which links the back of the nose to the middle ear. It is normally closed but opens when we swallow, yawn or chew. The Eustachian tube has three main functions: to protect the middle ear from pathogens; to ventilate the middle ear, which can help to keep the air pressure equal on either side of the eardrum, enabling the eardrum to work and vibrate properly.

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Optometrists/eye doctors in Austin, Cedar Park, Round Rock, Bee Cave, Cedar Hill, Mesquite, and Burleson, TX. Experienced eye care & the most advanced technology. General eye exams, eye disease treatment, contacts & LASIK.