The only cause of chalazion is a cyst formed when the ducts of the lid gland become blocked and the secretions produced by the lid gland do not drain. Chalazia can occur at all ages and is also known as a chalazion cyst. Chalazia progresses slowly and is not painful or uncomfortable in a non-inflammatory state, so many people discover it by touching their eyelids unintentionally or only after the chalazia rises above the eyelid skin. Chalazia can be found as a round, hard mass under the skin of the eyelid, ranging from the size of a grain of rice to the size of a soybean, with no pressure pain. Chalazia is usually not associated with pain, but in a few cases it is associated with pain because the cyst is combined with a bacterial infection. Small chalazia are benign masses and can absorb on their own after treatment with hot compresses and topical hormonal creams. Larger chalazia or chalazia that are not significantly absorbed with conservative treatment can be surgically removed, either through a lid conjunctival incision or through a skin incision, depending on the location and size of the chalazia. For a transdermal incision, the incision must be parallel to the lid margin, and for a transconjunctival incision, the incision must be perpendicular to the lid margin. After incision, a spatula is used to remove the cystic secretions, usually in the form of bean curd or jelly, and the envelope needs to be removed to prevent recurrence. It is important to note that recurrent “chalazia” in the elderly should be excised and sent for pathology to rule out adenocarcinoma of the lid. The cause of chalazion is a cyst formed by an obstructed lid duct and chronic granulomatous inflammation accompanying the cyst.