A stye is a bacterial infection of one of the hair follicles of the eyelashes or one the small glands near the inner corner of the eye.
A stye occurs when bacteria infect one of the hair follicles of the eyelashes or one of the glands near the inner corner of the eye. Ninety five percent of the time, the infection is caused by Staphylococcus aureus bacteria.
Ninety five percent of the time, a stye is caused by the bacteria Staphylococcus aureus. Other bacteria may be involved less often. Risk factors that increase a person's chance of developing a stye include the following: