What Causes A Stye? What Is A Stye?
A stye, or hordeolum, is a bacterial infection with abscess formation (or simply, a collection of pus, like a pimple) in the glands of the eyelid. The meibomian glands are structures in the eyelid that create oils for lubricating the surface of the eye, enhancing comfort.
There are two different forms of styes:
External Hordeolum: Typically looks like a pimple that has “come to a head,” meaning it has a white top and is ready to pop (But please don't!)
Internal Hordeolum: Affects deeper inside the oil glands and will be red and inflamed without the white top.