Aqueous humor fills the space between the cornea and which structure of the eye?

The aqueous humor is a clear fluid that occupies the anterior and posterior chambers of the eye, forming a crucial part of the eye's internal structure. It is produced by the ciliary body and fills the space between the cornea (the outer transparent layer of the eye) and the iris, which is the colored part of the eye.

The function of the aqueous humor is to provide nutrients to the avascular structures of the eye, maintain intraocular pressure, and aid in the removal of metabolic wastes. The iris serves as a barrier that separates the anterior chamber (between the cornea and the iris) from the posterior chamber (between the iris and the lens). This anatomical relationship is essential for normal eye function and pressure regulation.

By understanding the specific locations and functions of these structures, it becomes clear why the iris is the correct answer in this context.