Advertisement
question

Why does air come out of a tear duct when I blow my nose?

Anthony L. Komaroff, MD
Anthony L. Komaroff, MD
Internal Medicine
answer
Gentler nose blowing, rather than seeing a doctor, is the solution to this problem. Here's why.

Tears are made in the lacrimal duct. Tears flow across the eye to lubricate it and then drain through two holes called puncta. One puncta is on the upper lid and one is on the lower lid.

These puncta are attached to ducts that drain the fluid into a sac inside the nose. This lacrimal sac drains into the nose. Problems can come up when air and fluid go in the opposite direction. The small size of the openings and gravity usually prevent this.

It is sometimes possible to reverse the flow with enough pressure in the nose to force air and mucous back through the lacrimal sac and ducts and into the eye.

But this is not a good idea. It can force infected mucous into the lacrimal duct and eye, spreading infection. Stick with the gentle nose blowing.
Harvard Medical School What to do about Allergies

More About this Book

Harvard Medical School What to do about Allergies

Food allergies, hayfever, skin allergies, and reactions to pet dander: the symptoms of these allergies are different but the cause is the same: your immune system is over reacting to an ordinarily...

Continue Learning about Eye and Vision

Strategies to ease the cost of treatment for wet AMD
Strategies to ease the cost of treatment for wet AMD
The main treatment for wet age-related macular degeneration (wet AMD) is anti-VEGF therapy. VEGF is vascular endothelial growth factor, a protein asso...
Read More
Pink eye: understanding causes, symptoms, and treatment
Pink eye: understanding causes, symptoms, and treatment
Pink eye, also known as conjunctivitis, is a contagious infection often associated with kids. And while it is fairly common among children, adults can...
Read More
4 important things to understand about cataract surgery
4 important things to understand about cataract surgery
Cataracts is a condition in which protein clumps in the lenses of the eyes cause cloudy or fuzzy vision. More than half of us will have a cataract by ...
Read More
Eye care for your kids: a basic guide
Eye care for your kids: a basic guide
How often have you told your kids to crunch on carrots because they’re good for their eyes? Maybe you’ve scolded them for sitting too close to the TV,...
Read More

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.