The aqueous humor is the fluid that fills the anterior portion of the eye between the lens and the cornea. This fluid is constantly regenerated and drains out through the scleral venous sinus. If the scleral venous sinus is blocked, aqueous humor can accumulate, putting pressure on the structures of the eye. Which structure of the vascular layer is responsible for producing the aqueous humor?

• A. Iris.
• B. Choroid.
• C. Ciliary Body.
• D. Ciliary Process.

Answer: (D)

Verified step by step guidance

1. Understand the anatomy of the eye: The eye is composed of several layers, including the fibrous layer, vascular layer, and inner layer. The vascular layer, also known as the uvea, includes the iris, ciliary body, and choroid.
2. Identify the function of the ciliary body: The ciliary body is part of the vascular layer and plays a crucial role in the production of aqueous humor. It contains the ciliary processes, which are responsible for secreting the aqueous humor.
3. Clarify the role of aqueous humor: Aqueous humor is a clear fluid that fills the anterior chamber of the eye, providing nutrients to the lens and cornea and maintaining intraocular pressure.
4. Recognize the importance of drainage: The aqueous humor is continuously produced and must drain properly through the scleral venous sinus to prevent pressure buildup. Blockage of this drainage can lead to increased intraocular pressure, potentially causing glaucoma.
5. Conclude with the correct structure: The ciliary processes, part of the ciliary body, are responsible for producing the aqueous humor. This highlights the importance of the ciliary body in maintaining the health and function of the eye.