Chalazion

Alternative names:

meibomian gland lipogranuloma

Definition:

A lump on the eyelid caused by a blockage of a small gland that produces part of the tear layer.

Causes, incidence, and risk factors:

A chalazion develops within the structure of the eyelid. It is caused by obstruction of the Meibomian (sebaceous) gland duct. It begins with inflammation and tenderness and later forms a cyst-like swelling. Most chalazia disappear after a few months. After initial healing, a recurrence is possible with a large cyst.