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

When the meibomian glands (the oil glands of the eyelids) become blocked due to infection or inflammation, tears evaporate too quickly leading to watery eyes and irritation. Either one or both of ...

LipiFlow treatment for meibomian gland dysfunction More than 25 years of ... lubricating the surface of the eyes. When these glands become blocked, production of the necessary oils to protect the ...