Tears are produced in the tear gland and play a vital role in maintaining the health of the eye by lubricating the eyes.
Tears normally drain into small holes located in the inside corner of the upper and lower eyelids. The tears then collect in the tear sac. The tear sac lies under the skin between the corner of the eye and the nose.
Next, the tears flow through a small tube, called the nasolacrimal duct, into the nose.
The tears are pumped through this drainage system by the opening and closing of the eye.
A blockage in any part of this system can prevent tear drainage and lead to excess tears running out of the eye and down the cheek.
In some patients, excess tearing is caused by one or more of the following:
Your treatment depends on what's causing the blocked tear duct. You may need more than one approach to correct the problem, the doctor will discuss your options at the conclusion of your comprehensive eye exam.