What are the different parts of the iris?

The iris is the colored, ring-shaped portion of the eye that surrounds the pupil. It is made up of several distinct parts. The stroma, which is the outermost layer of the iris, gives it the characteristic color, ranging from shades of blue, green, brown, or gray. The collarette is a thin ring of tissue located near the pupil, separating it from the rest of the iris. The pupillary zone is the central part of the iris that surrounds the pupil and plays a crucial role in controlling the amount of light that enters the eye. Finally, the iris root is the innermost part that attaches the iris to the ciliary body, a structure responsible for producing the fluid in the eye. Overall, these different parts of the iris work together to regulate the size of the pupil and provide the eye with its unique color.

This mind map was published on 16 November 2023 and has been viewed 91 times.