Question

What is accomodation ? How is it achoved in human eye ?

Answer 1

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Accommodation: In medicine, the ability of the eye to change its focus from distant to near objects (and vice versa). This process is achieved by the lens changing its shape. Accommodation is the adjustment of the optics of the eye to keep an object in focus on the retina as its distance from the eye varies.

Answer 2

Answer:

Accommodation: In medicine, the ability of the eye to change its focus from distant to near objects . This process is achieved by the lens changing its shape. Accommodation is the adjustment of the optics of the eye to keep an object in focus on the retina as its distance from the eye varies. Accommodation for near objects occurs from relaxation of the zonule. During far vision, the ciliary bodies relax, the zonule stretch, and the lens flattens. During near accommodation, the ciliary bodies contract (i.e., shorten), which relaxes the zonule and rounds the lens (i.e., thickens it). Accommodation is the ability of the eye to change the focal length of the lens by changing the curvature of the eye lens. Accommodation allows the eye to automatically adjust focus from seeing things at a distance and "tune" it to seeing nearer objects.