Question

How do we see the nearby objects and distant objects equally distinctly ?

Answer 1

our eye lens has ability to increase and decrease the focal point of the lens

Answer 2

Heya,

We see the nearby objects distant object equally distinctly bcz of the working of the Ciliary Muscles.
If an object is at infinity, parallel beam of light enters the eye and in this condition eye is least strained and said to be relaxed and in this time the Ciliary Muscles are in a relaxed position and we r able to focus on far object.
If an object is at least distance of distinct vision, eye is under maximum strain and visual angle is maximum and in this condition the Ciliary Muscles are strained and it helps to focus on the near by or closer objects.

The ability of the eye to see object from infinity upto 25 cm is called "power of accomodation" or the ability of the eye lens to adjust its focal length is called power of accomodation.

Hope this helps.....:)