Where Does the Gum in the Eyes Come from?

In the daytime, tears and mucus produced by .the eyes protect the eyeballs, and the surplus tears and mucus go into the nasal cavity through the lacrimal duct. When people sleep, less tears are produced, but the same amount of mucus is produced as in the day time. When the mucus mixes with dirt, it becomes sticky and truck. Because there are not enough tears and the mucus can not flow into the la duct in time, it is stored at the comer of the eye. This is the gum of the eyes. Usually people do not have a lot of gum. If a person has an eye or the eyes are too @, he or she may have a lot of gum.