What is the term for the clear, transparent fluid that fills the anterior chamber?

The clear, transparent fluid that fills the anterior chamber of the eye is known as aqueous humor. This fluid plays a critical role in maintaining intraocular pressure, providing nutrients to the avascular structures of the eye, such as the lens and cornea, and helping to remove metabolic waste.

Aqueous humor is produced by the ciliary body found behind the iris and is continuously drained through the trabecular meshwork and into the Schlemm's canal. This circulation helps ensure that the pressure within the eye remains stable, which is essential for maintaining the shape of the eye and proper functioning of the visual system.

In contrast, vitreous humor is a gel-like substance that fills the eye's posterior chamber, interstitial fluid is the fluid between cells in tissues, and synovial fluid lubricates joints. These substances serve different anatomical and physiological functions, making them distinct from aqueous humor in the context of the eye.