A person can comfortably read a book but finds it difficult to read the number on a bus parked 5 m away from him. Name the type of defect of vision he is suffering from. Which type of lens should be used in his spectacles to correct his vision?

When a person reads a book he keeps it near to it’s near point of distinct vision, so the person is not suffering from myopia or near sightedness and as the person can’t read a number at a distance of 5m far, so the person definitely has Hypermetropia which is also called far sightedness because he is not able to see far objects and to correct this type of defect convex lens is needed or converging lens is needed because the image is formed behind the retina.