A myopic person has been using spectacles of power -1.0D for distant vision. During old age he also needs to use separate reading glass of power +2.0 dioptres. Explain what may have happened.

A person wear spectacles of power-2.3 D Name the defect of vision he is suffering from.Draw the ray diagram for: Its correction after using a suitable lens.

A person needs a lens of power -5.5 d for correcting his distant vision. For correcting his near vision he needs a lens of power +1.5 D. What is the focal length of lens required for correcting(i) distant and (ii) near vision?

If aperson uses spectacles of Power +1.0 dioptre, what is the nearest distance of distinct vision for him ? Given that near point of the person is 75 cm from the eye.

A myopic adult has a far point at 0.1m. His power of accomodation is 4 dioptres What is his near point without glasses? (Take the image distance from the lens of the eye to the retina to be 2 cm).

A person can not see clearly objects beyond a distance of 1.2 m.Name the defect of vision he is suffering from.What would be the power of correcting lens used to restore proper vision?

A myopic adult has a far point at 0.1m. His power of accomodation is 4 dioptres What is his near point with glasses? (Take the image distance from the lens of the eye to the retina to be 2 cm).