What Is an Eyelid Bump or Lump?
An eyelid bump or lump is usually either a chalazion or a stye. A chalazion is a swollen, typically painless lump that forms when a meibomian oil gland becomes blocked, leading to buildup of oil and fluid. A stye (hordeolum) is a painful, red bump at the edge of the eyelid caused by a bacterial infection of an oil gland or eyelash follicle. Both conditions can cause swelling and irritation and may interfere with vision if large.
read more about eyelid bump or lump ...