How does the parts of the eye move so we can see things close up or far away?

Question

whats this called?

Answer 1

The portion of the eye that changes focusing distance is called the lens. Muscles around it contract and relax to change its curvature.  

Answer 2

we can see objects at varying distances because of elongation and contraction of lens . this happens because of stretching and relaxing of ciliary bodies, a type of muscle, around the lens