' Short-sightedness and Long-sightedness Short-SightednessLong-Sightedness(i) The inability of the eye lens to focus images of distant objects on the retina; so the images fall in front of the retina.The inability of the eye lens to focus near object images on the retina; so the images fall beyond the retina.(ii) It is corrected by using glasses of concave lens.It is corrected by using glasses of convex lens.