What structure primarily regulates the outflow of aqueous humor?

The trabecular meshwork is the primary structure responsible for regulating the outflow of aqueous humor from the anterior chamber of the eye. This meshwork is located at the angle where the cornea meets the iris and plays a critical role in draining the aqueous humor produced by the ciliary body.

As aqueous humor flows from the posterior chamber through the pupil into the anterior chamber, it encounters the trabecular meshwork. The meshwork itself consists of a complex network of connective tissue, which has pores that allow the aqueous humor to pass through. The effectiveness of this structure in facilitating proper outflow is essential for maintaining intraocular pressure within a healthy range. If aqueous humor outflow is compromised, it can lead to elevated intraocular pressure and conditions such as glaucoma.

The ciliary body, while important for the production of aqueous humor, does not directly regulate its outflow. The cornea and lens are also crucial components of the eye but are not involved in the regulation of aqueous humor flow. Their roles primarily pertain to focusing light and maintaining the eye's shape and refractive properties. Therefore, the trabecular meshwork's function in aqueous outflow regulation is vital for overall ocular health and pressure balance.