Tear Duct Infection (Dacryocystitis)
What Is It?
Dacryocystitis is an infection in the tear drainage system. Tears drain from each eye through small canals, a tear sac (lacrimal sac) and a tear duct (nasolacrimal duct).
Tears are made by a small organ above the eye under the upper lid. At the inner corner of each upper and lower eyelid is an opening to a small tube (drainage canal). The drainage canals carry away tears that have rinsed the front surface of the eye away so fresh tears can come in.