Black Eye
Medical Author: John P. Cunha, DO, FACOEP
Medical Editor: David Perlstein, MD, FAAP
Black eye introduction
A black eye often results from
injury to the face or the head, and is caused
when blood and other fluids collect in the space around the eye. Swelling and
dark discoloration result in a "black eye" – sometimes called a "shiner."
Most black eyes are relatively minor injuries. Many heal on their own in a
few days, but they may signify a more serious injury.
Despite the name, "black eye," the eye itself is not
usually injured. The tissues around the eye may be significantly discolored and
swollen without any injury to the eye itself, like a
bruise (ecchymosis) around the eye.
The skin around the eye is very loose, with mostly fat underneath it and fluid
accumulates easily in this area. The skin around the eye is one of the first
places to swell when the facial area is injured. Depending on the location and
type of injury, one or both eyes may be affected. Injuries to the eye brow and
forehead area often result in black eyes because gravity pulls the blood and
inflammatory fluid into the soft tissues under and around the eyes.
As a black eye heals, the swelling around the eye decreases, and the bruise
gradually fades away. The bruising will usually start out a very dark purple,
and as it fades, it may change to light purple, then greenish, then yellow
before disappearing.
What causes a black eye?
The most common cause of a black eye is a blow to the eye, nose, or forehead.
Depending on where the blow lands, one or both eyes may be affected.
A blow to the nose often causes both eyes to swell
because the swelling from the nasal injury causes fluid to collect in the loose tissues of the eyelids.
Other causes of black eye include:
Other causes of swelling around the eye include (these conditions do not make the skin turn black and blue around the eye):
Next: What are the signs and symptoms of a black eye? »