Eye Sty

A sty is an acute infection of the oil glands of the eyelids that results in a firm, red lump on the eyelid. Sometimes it gets filled with pus.

Sties are caused by dirt, makeup, or other debris that block and infect the oil gland with bacteria.

Common symptoms of sties include pain, swelling, tenderness, burning sensation, itching, difficulty blinking, increased sensitivity to light, and mucus discharge from the affected eye.