Rheumatoid arthritis causes chronic inflammation. This usually occurs in the joint, but it can also cause extreme dryness of the eyes which can, in turn, damage the cornea. In rare cases, the condition can lead to scleritis, where the white part of the eye becomes inflamed and painful. Severe dry eyes often lead to blurred vision. Scleritis associated with rheumatoid arthritis can also cause blurred vision and sensitivity to light.

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