The Tiny Drains In Your Eyelids

You have four invisible drains located on the inner corners of your eyelids. These tiny openings act as suction pumps that pull excess tears into your nasal cavity to keep your eyes clear.

These small holes are called lacrimal puncta, and they work constantly without you noticing. Instead of just letting tears spill over your cheeks, they siphon excess fluid directly into your nose. This is precisely why your nose runs whenever you start to cry. It is a biological plumbing system designed to keep your vision crisp and your face tidy.