What is the primary function of aqueous humor in the eye?

The primary function of aqueous humor in the eye is to maintain intraocular pressure. This clear fluid is produced by the ciliary body and fills the anterior and posterior chambers of the eye. By exerting pressure against the eye walls, the aqueous humor helps to maintain the shape of the eyeball, allowing it to properly refract light and maintain optimal vision.

Intraocular pressure is crucial, as it ensures that the eye maintains its structural integrity and functionality. If the pressure is too high or too low, it can lead to ocular conditions such as glaucoma or can affect overall vision.

While lubrication of the eyelids, absorption of light for vision, and protection from foreign bodies are important functions in the context of eye health, they do not directly pertain to the specific role of aqueous humor. The lubrication of the eyelids is primarily managed by tear film, light absorption is facilitated by the retina, and protection is achieved through the eyelids and lashes, rather than the aqueous humor itself.