The behavior of changing the eye''s focusing state to maintain a clear image as the distance to the viewed object varies is called the "Accommodative Response."
When a person stares into the distance, the ciliary muscle relaxes, the zonular fibers tense, and the lens flattens — the lens is in a relaxed state. Conversely, when looking at a near object, the ciliary muscle contracts, the zonular fibers relax, and the lens becomes thicker — the lens is in a tensed state, indicating that the eye is performing accommodation.
Accommodation refers to the eye''s ability to adjust focus to see clearly at different distances, achieved by changing the curvature and shape of the crystalline lens.
