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

Your healthcare provider may recommend chalazion surgery when a bump (cyst) caused by a blocked oil gland in your eyelid (chalazion) doesn’t improve with medical care. You may also need surgery ...

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.