Name the defect of vision in a person whose far point is less than infinity. What type of lens is used to correct it?

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?

Make a diagram to show how hypermetropia. is corrected. The near point of a hypermetropic eye is 1 m. What is the power of the lens required to correct this defect? Assume that the near point of the normal eye is 25 cm.

A person needs a lens of power -5.5 dioptres for correcting his distant vision. For correcting his near vision he needs a lens of power +1.5 dioptre. What is the focal length of the lens required for correcting distant vision?

A person needs a lens of power -5.5 dioptres for correcting his distant vision. For correcting his near vision he needs a lens of power +1.5 dioptre. What is the focal length of the lens required for correcting near vision?

A person with a myopic eye is not able to see objects beyond 1.25 m from it. What is the nature, the focal length and power of the lens used to correct the' defect?

A person cannot see objects nearer than 1.5 m from his eyes while a person with normal vision can see objects upto 25 cm from his eyes. What is the nature and power of the, lens required to correct this defect?

A far sighted person has his near point 50 cm. Find the power of lens he should use to see at 25 cm clearly.