Black eye
The so-called black eye is caused by bleeding beneath the skin around the eye. Sometimes a black eye indicates a more extensive injury, even a skull fracture, particularly if the area around both eyes is bruised or if there has been head trauma. Although most black-eye injuries aren't serious, bleeding within the eye, called a hyphema, is serious and can reduce vision and damage the cornea. In some cases, glaucoma also can result.
Take these steps to take care of a black eye:
Using gentle pressure, apply ice or a cold pack to the area around the eye for 10 to 15 minutes. Take care not to press on the eye itself. Apply cold as soon as possible after the injury to reduce swelling.
Be sure there's no blood in the white and colored parts of the eye.
Seek medical care immediately if you experience vision problems (double vision, blurring), severe pain, or bleeding in the eye or from the nose.