How are we able to see nearby and also the distant objects clearly?

How are we able to see a moving picture?

A certain person can see clearly objects lying between 20 cm and 250 cm from his eye. What spectacles are required to enable him to see distant objects clearly ? When he is wearing these spectacles, what is his least distance of distinct vision ?

The far point of a person having myopia is 200 cm in front of the eye. Find the focal length and power of lens required to enable him see the distant objects clearly.

The for point of a myopic person is 80 cm in front of the eye. What is the power of the lens required to enable him to see very distant objects clearly? In what way does the corrective lens help the above person? Does the lens magnify very distant object? Explain.

Anil’s uncle cannot see nearby objects clearly, but he can see distant objects clearly. How is it corrected ?

Anil’s uncle cannot see nearby objects clearly, but he can see distant objects clearly. What is the eye defect he is suffering from ?

We cannot see the details of a distant object because:

The far point of a myopic person is 150 cm in front of the eye. Calculate the focal length and power of a lens required to enable him to see distant objects clearly.