A person can see objects clearly, when they are farther than`12.5`m away. Is he nearsighted or farsighted?

A person can see objects clearly, when they are farther than 12.5 m away What type of lens and what type of power will allow the person to see distant objects clearly ?

A certain nearsighted person cannot see objects clearly,when they are more than 78 cm from either eye. The person's near pint is 23 cm.How is this affected,when viewing through the corrective lenses?Assume that the lenses in spectales are 3 cm in front of the eye.

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 person can see clearly only up to 3 m.What type of defect a person have ? Prescribe a lens for his spectacles, so that he can see clearly up to 12 m.

A certain person can see clearly objects at a distnaces btween 20 cm and 250 cm from his eye. What spectacles are required to enable him to see distant objects clearly?