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A black eye is bruising caused by bleeding in the tiny blood vessels in the skin surrounding the eye. Most injuries that cause a black eye aren't serious. But a black eye could be a symptom of a more serious injury, such as an internal injury to the eye or a fracture of the thin bones around the eye. You may have a skull fracture if you have double vision, bruising around both eyes or bleeding from the nose.
To take care of a black eye:
Seek medical help if you: