Why does water squirt out of your eye if you blow your nose really hard?

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Why does water squirt out of your eye if you blow your nose really hard?
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It might not make you the most popular person at the party, but it's worth a shot?

But how can some people spurt unusual fluids from their eyes, and is it dangerous to their health?

"This drainage system is essentially the sewer for the eye's tears," said Dr. Michelle Andreoli, an ophthalmologist at Northwestern Medicine Regional Medical Group in Illinois and a clinical spokesperson for the American Academy of Ophthalmology."The tear duct's drain opens at a small bump, which is visible in the upper and lower eyelid at the inside corner near the nose.

Along the way, there are valves that typically stop air or liquid from backing up into the eye. But, with pressure, some people may be able to squeeze or squirt out fluids in the sac and duct. It may even make a high-pitched sound, according to case reports published in the Journal of Otolaryngology and Rhinology in 2020.

One of the more common ways to put pressure on the nasal cavity is to perform the Valsalva maneuver: Take a deep breath, close the mouth, pinch the nose and then blow out for about 10 to 15 seconds. Pressure from this maneuver will often"pop" the ears and put pressure on the nasal cavity. Some people report squirting milk or blowing smoke through this duct when performing this type of pressure-building maneuver.

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