The tear glands lacrimal glands , located above each eyeball, continuously supply tear fluid that's wiped across the surface of your eye each time you blink your eyes. Excess fluid drains through the tear ducts into the nose. When you have a blocked tear duct, your tears can't drain normally, leaving you with a watery, irritated eye. The condition is caused by a partial or complete obstruction in the tear drainage system.
If a tear duct becomes blocked, tears build up and irritate the eyes. This irritation causes painful swelling, makes the eyes appear continuously watery, and increases the risk of infection. When the tear ducts are functioning correctly, tears roll down from the lacrimal glands — which sit above the outer side of each eye — and across the surface of the eye. They then drain through holes in the eyelids puncta into canals, which transport them to a sac lacrimal sac on the side of the nose.
Search thousands of topics on CostHelper How much does cost? A blocked tear duct stops the tears that lubricate the eye from draining into the nose and can cause watery eyes. The condition is common in newborn babies who often improve without treatment, but it also can happen in adults due to aging, eye infection, injury or another health problem. Typical costs:. Treatment for a blocked tear duct typically is covered by insurance.
Tear ducts, also known as "nasolacrimal ducts," make it possible for tears to drain through the maxillary bone and into the back of the nose. Tear ducts are an important component of eye health, and are also prone to blockage: something that requires medical attention. Tear ducts are part of the nasolacrimal system , which is responsible for draining tears from the surface of the eye. The process begins in the lacrimal glands, which are located in the outer upper corner eye socket on each side of the eye.