Aqueous Humor Production and Flow

Most of the aqueous humor, produced by the ciliary body, exits the eye at the angle formed by the junction of the iris and cornea. It exits primarily via the trabecular meshwork and the Schlemm canal (pink arrows). A smaller amount drains through the ciliary body face entering the uveoscleral pathway (black arrows). In early adulthood, the ratio of drainage is approximately equal in both pathways. With aging, drainage occurs predominantly through the trabecular meshwork and Schlemm canal.