The chickenpox virus causes shingles. It causes a very painful, blistered rash to develop on the skin. In some cases, this rash can develop on the face and around the eyes, leading to swelling within the eye. People with shingles around their eyes often experience blurred vision and sensitivity to light. The condition requires prompt treatment with antiviral drugs. Otherwise, the eye may become permanently scarred. Shingles in the eye can also cause glaucoma, which damages the optic nerve.

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