• Hypermetropia or hyperopia makes the eye see distant objects clearly but not the objects close. This happens when the focal length of the eye lens becomes too long and the eyeball becomes short. • This can be corrected with the help of convex-shaped spectacles or lens. • Hypermetropia is a defect of vision that causes the impossibility for rays of light to be focused on the retina but behind it. The main cause for this defect is the insufficient eye length. A lot of people suffer from hypermetropia without even knowing it because the eye automatically compensate for this defect. Related Concepts: Cause of defect of hypermetropia:- i) Due to the eyeball being too short means the distance between the eye lens and retina decreases. ii) Due to the increase in the thinness of the eye lens its focal length increases. Correction of defect of hypermetropia: To correct the hypermetropia we use the convex lens in spectacles because the convex lens is converging in nature and this converging power of the convex lens converge all the rays coming from a nearby object due to which the image of the object will form at the retina.