what causes epiphora
Epiphora, or excessive tearing, is defined as the overflow of tears from one or both eyes. Epiphora can occur continuously (be present all the time), or it can occur intermittently (be present only sometimes). Epiphora is subdivided into two main categories: overproduction of tears or inadequate drainage of tears. In this article, we will be discussing inadequate drainage as a cause of epiphora. Anatomy.