We just learned about the Eyelash.
Another part of the eye is Rheum.
This is what some people call sleep, sleepy seeds, sleepy bunds, sleepy sand, eye goop, sleep dust or sleepy dirt.
Sometimes when you wake up in the morning there is some hard crusty thing by the inside corner of your eye.
It is hard almost like a piece of sand, and you can wipe it away.
This is called rheum, and it is just the oils that come from your glands building up and drying by your eye.
These oils are coming out all day long, but when you blink they get spread out on your eye or they dry up.
When you sleep you aren't blinking so it dries up and gets crusty.
In the old days people made up a person called the Sandman that comes around and sprinkles sand on the eyes of kids to bring them good dreams.
When you wake up in the morning, that's the leftover sand from the sandman.
(from: wikipedia - sandman)
Kid Facts - Blast from the past: Cupid's Bow
