Definition:

The Lacrimal Sac is a small, pear-shaped pouch that collects tears from the surface of the eye. It is located in the lacrimal fossa, which is a depression in the inner wall of the orbit.

Structure and Location:

The Lacrimal Sac is situated between the inner corner of the eye, known as the medial canthus, and the nasal cavity. It is a part of the lacrimal apparatus, which includes structures that produce, distribute, and drain tears.

Function:

The primary function of the Lacrimal Sac is to store excess tears and facilitate their drainage into the nasolacrimal duct. Tears are continuously produced to keep the eye lubricated, and any excess moisture is absorbed by the Lacrimal Sac.

Drainage:

Tears from the Lacrimal Sac are drained through the nasolacrimal duct. This duct connects the Lacrimal Sac to the nasal cavity, allowing tears to be redirected away from the eye. When a person cries or experiences excessive tearing, the Lacrimal Sac may become overwhelmed and cause tears to overflow onto the face.

Pathologies:

Various conditions can affect the Lacrimal Sac, such as infections, inflammation, or blockages in the nasolacrimal duct. These can lead to symptoms like excessive tearing, pain, swelling, or persistent eye discharge. Treatment may involve medications, surgical interventions, or tear duct probing to restore proper tear drainage and alleviate symptoms.