Medically reviewed by David Strosberg, MD Chalazion surgery removes a small red bump that develops on the eyelid. The bump, ...

This article will explain the differences and similarities between a chalazion and a sty, what causes a chalazion to develop, ...

A chalazion is a small bump that appears on the upper or lower eyelid. A chalazion is similar to a stye but is usually smaller and less painful.