Tag Lily Koo Lin

Epiphora

Key Concepts Epiphora, or chronic overflow of tears, is caused by overproduction, outflow obstruction, or failure of the tear pump. Chronic ocular surface irritation is a common source of tear overproduction. The lacrimal pump is mediated by contraction of the…

Eyelids and the Corneal Surface

Key Concepts The eyelids function to cover, cleanse, and lubricate the eye. The eyelid skin is the thinnest in the body and allows for unrestricted movement. The tarsal plates provide structural stability to the eyelids. The orbicularis oculi is important…