Como se dice lagaña
It's "rheum", but most people won't know that word. I've always heard it called "sleep".
When someone gets up in the morning, he washes his face to get the sleep out of his eyes.
I also found this:
bleary ['blɪərɪ] adjective (comp blearier, superl bleariest)
1 (from tears) nubloso,-a
2 (from tiredness) legañoso,-a