What could cause an abscess in the eye?

Abscess: An abscess is a collection of bacteria or fungus often surrounded by a membrane or capsule. An abscess can occur in the eye as part of a fungal infection or bacteria. Immunocompromised patients (ie, have diabetes, hiv, etc) are more susceptible to severe eye infections. It can also occur on the eyelid skin or in skin glands around the eye: can be caused by clogged skin gland from skin bacterial.