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Home > Services > Eye Care > Eye Conditions & Treatments > Orbital Cellulitis

Orbital Cellulitis


Orbital cellulitis is a serious infection of the bone cavity in which the eyeball sits. This cavity is called the orbit. It is surrounded by sinuses. The sinuses are the hollow areas of the skull around the nose.

Orbital cellulitis affects not only the eye, but also the eyelids, eyebrows, and cheeks. It causes the eyeball to have a swollen appearance. If the infection is not treated, it can lead to blindness.


Orbital cellulitis is caused by certain bacteria.

Risk Factors

Factors that increase your risk of getting orbital cellulitis include:

  • Age: Children are at high risk of severe infections that could result in blindness
  • Infections that spread from areas surrounding the eye, such as the sinuses, mouth and teeth and face
  • Infections that spread from the bloodstream
  • Injury or surgery in the area
  • Stye on the eyelid
  • Bug bite or sting to the eyelid


Symptoms of orbital cellulitis include:

  • Bulging eye
  • Painful eye movements
  • Tender or warm tissues around the eye
  • Swollen eyelids
  • Difficulty seeing when the eyelid is swollen
  • Fever
  • Headache
  • Runny nose
  • Double vision
  • Blurry vision


Doctors can often recognize orbital cellulitis by examining your eyes, teeth, and mouth. Your medical and family history will be taken.

Your bodily fluids may be tested. This can be done with:

  • Blood tests
  • Testing samples from the lining of your eye, nose and throat

Images may be taken of your bodily structures. This can be done with:

  • Computed tomography (CT) scan or MRI
  • X-ray of your sinuses and orbit


Orbital cellulitis can worsen quickly. It often requires hospitalization. Treatment for orbital cellulitis includes:

  • Antibiotics are given to treat the infection. They will be started right away, even before results from the laboratory have come back. Antibiotics are generally given by mouth for three weeks. If the infection is serious, antibiotics may be given through an IV for at least several days.
  • Diuretics or eye drops are given to help decrease pressure within the eyeball.
  • Oral corticosteroids to reduce inflammation, swelling and pain
  • Surgery may be performed to drain a pus collection from an infected sinus or orbit.

If you are diagnosed with orbital cellulitis, follow your doctor's instructions.


Treating sinus or dental infections right away may prevent them from spreading to the eyes. In addition, children should be protected with the Hib B vaccine, which will prevent most of the Haemophilus influenzae type B infections.

Do you have orbital cellulitis? 

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Content was created using EBSCO’s Health Library. Edits to original content made by Rector and Visitors of the University of Virginia. This information is not a substitute for professional medical advice.


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