What produces eye gunk when we sleep?

Have you ever woken up in the morning with the corners of your eyes filled with crud? Sleepy sand? Eye goblins? Dozy dust? Bed boogers? Why do our eyes make this stuff, anyway? And why does it build up when we’re asleep? We asked Yale eye doctor Soshian Sarrafpour to help us get to the bottom of this issue.

, and we’ll find someone who can answer it in the 

Have you ever woken up in the morning with the corners of your eyes filled with crud? Sleepy sand? Eye goblins? Dozy dust? Bed boogers? Why do our eyes make this stuff, anyway? And why does it build up when we’re asleep? We asked Yale eye doctor Soshian Sarrafpour to help us get to the bottom of this issue.
Got a question that you can’t keep a lid on? Send it to us at BrainsOn.org/contact, and we’ll find someone who can answer it in the blink of an eye.  

KAREN BLEIER/AFP/Getty Images

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What produces eye gunk when we sleep?

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