What is the function of aqueous humor?

The function of aqueous humor is primarily to nourish the lens and cornea. Aqueous humor is a clear fluid produced by the ciliary body, which lies behind the iris. It fills the anterior and posterior chambers of the eye and plays a critical role in maintaining intraocular pressure, providing essential nutrients, and removing metabolic waste. The lens and cornea, being avascular (lacking blood supply), rely on the aqueous humor for their nutritional requirements, which is vital for their health and transparency.

While aqueous humor does contribute to intraocular pressure, it is not its primary role. Other functions, such as providing structural support or preventing infection, are secondary and are achieved through other mechanisms and structures in the eye. The cornea and lens receive nourishment and hydration from this fluid, which is crucial for maintaining clarity and proper function.