Question

The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to correct the problem?

Answer 1

The far point of this myopic person is 80 cm. This means that this person can see the distant object (which is kept at infinity) clearly if the image of this object is formed at his far point (80 cm). Therefore, in this case,

The concave lens of power -1.25 D is required to correct the problem.​