Assuming the diameter of eyeball is 5 cm, what is the power of the eye lens, if the near point for normal vision is 25 cm?
The near point of a hypermetropic eye is 1 m. What is the power of the lens required to correct this defect? (Assuming that the near point of a normal eye is 25 cm)
If the near point of a far-sighted eye is 1 m, what is the power of the lens required to correct this defect? (Assuming that the near point of a normal eye is 25 cm)