Name the part of our eyes which helps us to focus near and distant objects in quick succession.

What is the:

(a) far point of a normal human eye?

(b) near point of a normal human eye?

What is the range of vision of a normal human eye?

Define the term "power of accommodation" of human eye.

Give the scientific names of the following parts of the eye:

(a) carries signals from an eye to the brain.

(b) muscles which change the shape of the eye-lens.

(c) a hole in the middle of the iris.

(d) a clear window at the front of the eye.

(e) changes shape to focus a picture on the retina.