Science Focus - the home of BBC Science Focus Magazine
Why do your eyes water when your nose is hit? © iStock

Why do your eyes water when your nose is hit?

Subscribe to BBC Science Focus Magazine and get 6 issues for just £9.99

Eye nose the answer! It's all about going with the lacrimal fluid flow...

Asked by: Joshua Smith


The nose is soft and sensitive, and the nasal passage is connected to the eyes via the tear ducts. Normally this allows the lacrimal fluid (tears) to drain through the nose. But when the fluid build-up in the nose is sufficient, the flow can block the normal draining path, so that the tears that are produced have nowhere to go.

Can you die from a nosebleed? © ISTOCK


Subscribe to BBC Focus magazine for fascinating new Q&As every month and follow @sciencefocusQA on Twitter for your daily dose of fun science facts.


luis villazon
Luis VillazonQ&A expert

Luis trained as a zoologist, but now works as a science and technology educator. In his spare time he builds 3D-printed robots, in the hope that he will be spared when the revolution inevitably comes.


Sponsored content