Most eye infections are caused by bacteria or a virus. Conjunctivitis, or pink eye, and a painful lump on the eyelid called a stye are two common eye infections.
When someone has pink eye, the outer layer of the eye as well as inside the eyelid become irritated and inflamed. Pink eye caused by an infection is common in children and is very contagious. Symptoms of pink eye include redness, itching, swelling, burning and discharge. Bacterial pinkeye is treated with antibiotic eye drops or ointment.
A stye is a red lump on the eyelid that can occur when bacteria from the skin gets into the hair follicle of an eyelash. Styes will usually go away on their own. Warm compresses can help them heal faster.