When you think about bodily fluids, you may not immediately think of them coming out your eyeballs. But the state of all the stuff creeping out of your eyes can be a marker for several things—a few of which require medical attention. That's not to say that eye discharge is always unusual. The eye makes mucus (or rheum) throughout the day and night to help flush out waste, and it can collect while you're sleeping. (Here are 10 things your eyes say about you.)
"Having a little bit in the inner corner of your eyes when you wake up is normal," says Matthew Gardiner, MD, director of the emergency room and of ophthalmology emergency services at the Massachusetts Eye and Ear Infirmary. "But if during the day it's reaccumulating or it's welling up, then something is wrong."
Here's what you can learn from the gook under your lids.
This article was originally published by our partners at Prevention.