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Understanding Red Eye: Treating the Infection

Eye infections are most often caused by viruses or bacteria. Sometimes they are caused by an infection in another part of your body. Many eye infections can spread from person to person (are contagious).

Boy rubbing eye.


Viral infections can happen in one or both eyes. They can affect your eyes when you have a cold, flu, or other virus. In most cases there is a teary, watery discharge. Your eyes may burn or itch. Your eyelids may be puffy and sore.

Treating viral infections:

  • Most viral infections go away on their own in 1 to 3 weeks.

  • Artificial tears and warm cloths can ease your symptoms.

  • Your healthcare provider may also prescribe eye drops.

  • To keep the infection from spreading, don’t touch your eyes. 

  • Don’t share bedding or towels.


Bacterial infections often occur in one eye. A thick, smelly discharge is common. Bacterial infections can be long-term (chronic). Some can cause serious damage to your eye. Often they are caused by bacteria in other parts of your eye or body. See your provider as soon as you notice any symptoms.

Treating bacterial infections:

  • Your provider will prescribe antibiotic eyedrops or ointment to kill the bacteria.

  • Use warm compresses to keep the eyelids clean.

  • To keep the bacteria from spreading, use a separate towel or tissue for each eye.

  • Don’t touch or rub your eyes.

  • Don`t share bedding or towels.


Very contagious

Eye infections can be very contagious. They spread quickly through daycare centers and classrooms. You may be asked to keep your child home as long as he or she has any discharge. Wash your hands and your child’s hands often. This can help stop infection and the spread of infection.



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