The sclera is the protective outer layer of the eye, which is also the white part of the eye. It’s connected to muscles that help the eye move. About 83 percent of the eye surface is the sclera.
Scleritis is a disorder in which the sclera becomes severely inflamed and red. It can be very painful. Scleritis is believed to be the result of the body’s immune system overreacting. The type of scleritis you have depends on the location of the inflammation. Most people feel severe pain with the condition, but there are exceptions.
Scleritis is often linked with an autoimmune disease. Sometimes there is no known cause. Scleritis may be linked to:
Each type of scleritis has similar symptoms, and they can worsen if the condition isn’t treated. Severe eye pain that responds poorly to painkillers is the main symptom of scleritis. Eye movements are likely to make the pain worse. The pain may spread throughout the entire face, particularly on the side of the affected eye.
Other symptoms may include:
The symptoms of posterior scleritis are not as evident because it does not cause the severe pain as other types. Symptoms include:
Some people experience little to no pain from scleritis. This may be because they have:
Your doctor will review a detailed medical history and perform an examination and laboratory evaluations to diagnose scleritis.
Your doctor may ask questions about your history of systemic conditions, such as whether you’ve had RA, Wegener’s granulomatosis, or IBD. They may also ask if you’ve had a history of trauma or surgery to the eye.
The following tests can help your doctor make a diagnosis:
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