The near point of a hypermetropic eye is $1\mathrm{m}$. What is the nature and power of the lens required to correct this defect? (Assume that the near point of the normal eye is $25 \mathrm{cm}$).

Which defect of the eye is shown in the figure given below?

In the given diagram which defect of the human eye is being corrected using a concave lens?

A student sitting on the last bench of a regular classroom is able to see the written work on a blackboard but unable to read from his textbook. Identify the type of defect of vision he is suffering from. What kind of lens should he wear to correct the defect?

Observe the given figure. Name the eye defect indicated in the figure and also mention the lens used to correct this defect.