A chalazion is a swollen, pain-free lump on the eyelid. It gradually forms when the meibomian gland, a sebaceous (oil) gland, ...

Chalazion surgery removes a small red bump that develops on the eyelid. The bump, chalazion, occurs when oil glands in the eyelid become blocked. Though a chalazion usually heals with medical care ...

Chalazion: Chalazion is one of the most common causes of eyelid bumps that develops due to a blockage in the oil glands. It is a firm, painless bump that forms farther from the lash line.