Where is the second point of attachment for the zonular fibers?

The second point of attachment for the zonular fibers is indeed found at the ciliary processes. Zonular fibers, also known as zonules or zonular ligaments, connect the ciliary body to the lens capsule, playing a critical role in maintaining the position of the lens and assisting in focusing by altering the tension on the lens.

At the ciliary processes, these fibers extend from the soft tissue of the ciliary body to the lens capsule, allowing for the lens to change shape during the process of accommodation as the eye focuses on objects at varying distances. This mechanism is essential for clear vision across different ranges. The attachment at the ciliary processes ensures the lens remains in place while allowing necessary flexibility for focusing.

Other locations mentioned, such as the corneal margin, uvea, and lens capsule itself, do not serve as points of attachment for zonular fibers. Rather, the lens capsule is the surface that the zonular fibers are connected to, while the corneal margin and uvea refer to areas related to the structure of the eye but do not play a role in the attachment of these specific fibers.