Your doctor will gather several types of information to reach a diagnosis. Some of this will be a simple history of any recent surgery or dental work, facial or skin wounds, and respiratory or sinus infections. Your doctor will also do a basic eye examination.
In addition, determining the type of infection will most likely require some sort of lab work. If your doctor suspects pre-suptal cellulitis, he or she may wish to test samples from the nose or even the eye itself. However, if orbital cellulitis is suspected, a blood test is likely.
In some cases, your doctor may also wish to obtain a CT or other scan of the area. These images will help your doctor determine the extent of any infection in the orbit.
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