A black eye, in the context of a bruise around the eye, is not natural. It's the result of trauma causing bleeding in the tiny blood vessels surrounding the eye. While most black eyes aren't serious, they indicate an injury. However, the term "black eye" can be ambiguous.
Understanding the Ambiguity of "Black Eye"
The question "Is a black eye natural?" requires clarification. There are two key interpretations:
1. Black Eye as a Bruise:
As defined by medical sources, a black eye is a bruise caused by bleeding beneath the skin around the eye. This is a result of an injury, such as a blow to the face. Therefore, a black eye resulting from trauma is not natural. Mayo Clinic and Medical News Today offer guidance on treating black eyes resulting from injury.
- Cause: Trauma, injury
- Natural Occurrence?: No
2. Black Eye as an Eye Color:
Some sources discuss "black eyes" as an exceptionally dark brown eye color. True black eyes don't exist. Even eyes appearing black are incredibly dark brown due to heavy pigmentation. Quora confirms this, stating that true black eyes are not found in nature.
- Cause: High melanin concentration in the iris
- Natural Occurrence?: Yes (as exceptionally dark brown)
In Summary
The answer depends on the interpretation of "black eye." A black eye resulting from injury is unnatural, caused by trauma. Conversely, extremely dark brown eyes, often visually perceived as black, are a natural variation in eye color.