What is hyperopia/hypermetropia/long sight and how can it be corrected?
A person with hypermetropia/hyperopia or long sight can see clearly objects far away from them, but not close to them. This is caused by the shape of the eye - the eyeball is slightly too short. It is corrected by spectacles or contact lenses with lenses which are 'plus' or convex in shape. If you are long sighted your prescription will have a plus lens power eg +2.50D.