<P> The lens is flexible and its curvature is controlled by ciliary muscles through the zonules . By changing the curvature of the lens , one can focus the eye on objects at different distances from it . This process is called accommodation . At short focal distance the ciliary muscle contracts , zonule fibers loosen , and the lens thickens , resulting in a rounder shape and thus high refractive power . Changing focus to an object at a greater distance requires the relaxation of the lens and thus increasing the focal distance . </P>
<P> The lens is flexible and its curvature is controlled by ciliary muscles through the zonules . By changing the curvature of the lens , one can focus the eye on objects at different distances from it . This process is called accommodation . At short focal distance the ciliary muscle contracts , zonule fibers loosen , and the lens thickens , resulting in a rounder shape and thus high refractive power . Changing focus to an object at a greater distance requires the relaxation of the lens and thus increasing the focal distance . </P>
how does the lens of the eye change shape
how does the lens of the eye change shape
accommodation
accommodation