Notes and References. 1  U.S. Senate: Reference Home > Glossary > Christmas tree bill. 2  Lardner, George (1966) The Day Congress Played Santa: A Look at the Christmas Tree Bill, Washington Post, 25 December, p. A1, A10. 3  Shribman, David (1983) It Began as a Rather Ordinary Piece of Legislation, New York Times, 9 November, p. A22.
When the individual is awake, blinking of the eyelid causes rheum to be washed away with tears via the nasolacrimal duct. The absence of this action during sleep, however, results in a small amount of dry rheum accumulating in corners of the eye, most notably in children.
According to Dr. Alan Kozarsky on WebMD, pink eye causes thick mucus in the eye after sleep, a burning sensation in the eye, and possibly blurred vision due to the excess mucus on the surface of the eye. 3 There are various types of eye inflammation that cause a thick discharge to appear in the eye and become crusty. Viral conjunctivitis.