A chalazion and a hordeolum are both bumps on the eyelid. A hordeolum, also called a stye, is caused by bacterial infection, while a chalazion results from an obstructed gland. Knowing whether you ...

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 ...