<prompt> The pa of the Lens which undergoes a change in shape during accommodation is?Anterior central paPosterior central paAnterior peripheral paPosterior peripheral pa  <response>: Mechanism of AccommodationEye at rest Ciliary ring is large and keeps the zonules tense Contraction of ciliary muscle Ciliary ring shoened and releases zonular tension on lens capsule - allows the elastic capsule to act unrestrained to deform the lens substance - lens anterior peripheral pa alters its shape to become more convex or conoidal Refer: AH Khurana, Comprehensive Textbook of Ophthalmology,5thedition, pg no: 41 