A contusion is a bruise. A bruise around the eye is called a periorbital contusion. This is also known as a black eye. A black eye is often caused by a blow to the eye area. It's an injury to the skin around the eye, not to the eye itself.
Symptoms of a black eye include bruising, swelling, and pain. Your child's eyelid may not open easily because of swelling.
Cool compresses or cold packs help reduce swelling. Bruising may take a while to heal. In some cases, the cause of the black eye can injure the eye, too. If the eye has also been injured, your child may need to wear an eye shield for a week or more.