An iris is the structure of an eye that regulates the amount of light passing to the visual receptors of the eye.
What do you mean by Visual receptors of the eye?
The visual receptors of the eye may be defined as those photoreceptors that are responsible for providing vision respective to light or dark. Examples are rod and cone cells.
Iris plays a functional role in the regulation of light that enters your eyes. It also helps in the formation of an image in front of the lens. The light that enters your eye takes place through the pupil.
Therefore, an iris is the structure of an eye that regulates the amount of light passing to the visual receptors of the eye.
To learn more about Iris, refer to the link:
https://brainly.com/question/16423508
#SPJ2
