Question

what is the power of accommodation

Answer 1

Accommodation is the process by which the vertebrate eye changes optical power to maintain a clear image or focus on an object as its distance varies. ... Mammals, birds and reptiles vary the optical power by changing the form of the elastic lens using the ciliary body (in humans up to 15 dioptres).

Accommodation (eye) - 

Answer 2

power of accommodation refers to the ability of the eye lens to adjust its focal length so as to make a person view objects at the near point as well as at the far point