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 the 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 infected 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:
Warm compresses: Warm compresses help to clear the clogged gland. Soak a clean washcloth in hot water and apply the cloth to the lid for 10-15 minutes, three or four times a day until the chalazion is gone. You should repeatedly soak the cloth in hot water to maintain adequate heat. When the clogged gland opens, you may notice increased discharge from the eye. This should improve.