Question

what is accommodation what gives the eye the power of accommodation

Answer 1

Accommodation is the ability of the eye lens to change its focal length accordingly to see the objects.
This power is granted by the ciliary muscles which compress or relax thereby changing the curvature and focal length of the eye lens

Answer 2

Here is your answer:

the ability of the eye lens to adjust its focal length to view the objects clearly and distinctly is called as the power of accommodation