Question

whts is short sightness and long sightness ? how is it corrected

Answer 1

Long-sightedness (hyperopia) Some people have eyes that are too short, which means the light focuses behind the retina at the back of the eye (they are long-sighted). ... Long-sightedness can be corrected by glasses or contact lenses.

Answer 2

a person who is suffering from short sightedness can see near objects but can't see distant object called myopia and it is corrected by concave lens.....

a person who is suffering from long sightedness can see distant object but can't see nearby object called hypermetropia. it is corrected by convex lens