While rare, they can sometimes form on the lower eyelid. Chalazia can affect ... (the outer surface of the eye). A chalazion ...

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.

An eyelid bump is often a stye, a pimple-like bump that can be uncomfortable or unsightly but goes away on its own. Other causes include milia (milium), chalazion, or, in rare cases, skin cancer.