The iris is the part of the eye that is colored.
The iris is a thin, circular structure responsible for controlling the diameter and size of the pupil and, therefore, the amount of light reaching the retina. The color of the iris varies widely, primarily due to the amount and distribution of melanin within it.
Here's a breakdown:
- Iris: This is the key part, responsible for eye color. It's located at the front of the eye.
- Melanin: This pigment determines the color of the iris. More melanin typically results in brown eyes, while less melanin leads to blue or green eyes.
- Pupil: The black circle in the center of the eye is the pupil, an opening that allows light to enter. The iris surrounds the pupil.
- Genetics: Eye color is a heritable trait, meaning it is passed down from parents to their children through genes.
The color of the iris is a fascinating example of genetics and light interaction, making each individual's eye color unique.
