Yes, to a limited extent.
The lens changes its shape by becoming more convex (thicker in the middle) when focusing on near objects. This shape change is controlled by ciliary muscles in the eye that pull on the lens to make it rounder, allowing for proper focusing on close-up objects.
Increased water pressure can change the shape of your eye. If this happens, it is always an indicator to get your eyes checked professionally.
convex
convex shaped or biconvex
NO
The lens in a cows eye is flexible and clear. The flexible lens is able to change shape which allows it to better focus on objects.
It is the lens
The question is not worded clearly, but one possibility is a set of muscles which change the shape of the lens so that you can focus on objects both near and far. As we age new layers of cells are continually being added to the lens, resulting in thickening and stiffening, so the muscles that change its shape become less and less effective.
its a muscle
The ability to change the shape of the lens to bend light is called accommodation. This process allows the eye to focus on objects at different distances by adjusting the curvature of the lens.
The sheep's eye is concave, the surface of the shape of the lens are circular.
The ciliary muscles