Chalazion

The term chalazion (pronounced Kuh-LAY-zee-un) comes from a Greek world meaning small lump.

A chalazion is an enlargement of an oil-producing gland in the eyelid called meibomian gland. It forms when the gland opening becomes clogged with oil secretions. It is not caused by an infection from bacteria, and it is not cancerous.

What is the difference between a chalazion and stye?

A chalazion is sometimes confused with a stye, which appears as a lump on the eyelid. A stye is a red, sore lump near the edge of the eyelid caused by an infection eyelash follicle. Chalazia tend to develop farther from the edge of the eyelid than styes.

How is a chalazion treated?

About 25% of chalazia have no symptoms, and will disappear without any treatment. Sometimes, however, a chalazion may become red, swollen and tender. A larger chalazion may also cause blurred vision by distorting the shape of the eye. Occasionally, a chalazion can cause the entire eyelid to swell suddenly.

Symptoms are treated with one or more of the following methods:

A chalazion usually responds well to treatment, although some people are prone to recurrences. If a chalazion recurs in the same place, your ophthalmologist may suggest a biopsy to rule out more serious problems.