The term functional nasolacrimal duct obstruction (FNLDO; watering with patent drainage) is misleading as it implies occluded drainage and solely nasolacrimal duct pathology. 'Normal' tear ...

Although epiphora can be due to either excessive tear production or abnormal drainage through the nasolacrimal system, in rabbits the most common cause of epiphora is a blocked nasolacrimal duct.

One issue that many cat parents might come across is the dreaded blocked tear duct. If your cat has a blocked tear duct, you ...

Congenital nasolacrimal duct obstruction (CNLDO) is a common condition in infants and young children, characterized by a blockage in the tear duct that can lead to excessive tearing and recurrent ...

Nasolacrimal duct stenosis due to inflammatory edema further impedes outflow and, thereby, exacerbates flow symptoms. The imbalance of tear production and clearance is often compounded by minor ...

Medically reviewed by Christine L. Larsen, MD Eye crust forms when mucus, oils, and debris accumulate, often during sleep.