The most common factor that cause black eye is injury, exactly face injury. Eye injury causes black eyes indeed, however, face injury is the common reason. The most crucial step in black-eye treatment is immediate and consistent exposure to cold, that is, apply cold compresses for five to ten minutes, three times a day and it is good to recover normal blood circle. Well, vitamin K is good for you to heal black eye. Studies have consistently shown the positive effects that vitamin K has on the healing process, especially bruises. So it is really true that vitamin K help black eyes. But how to supply vitamiin K? The answers are fresh fruits, such as oranges and strawbarries.