In order to see objects by the eye the image of the object should form on the retina, exactly on the retina. When a person is suffering from Myopia or near sightedness, the near point of distinct vision gets increases and an object placed at a distance less than this new near point has its image formed in front of retina
If a person can’t see the object clearly beyond 2m then he should use concave or diverging lens in order to correct his defect.