When vision is normal, light is focused on the retina, creating a clear image. In people who have this defect, the eyeball is smaller than normal, so light rays are focused behind the retina.
People with hyperopia see objects that are far away better than those that are close.
In hyperopia it often happens that the cornea is flatter resulting in the distance between the cornea and the retina being smaller, as well as the lens of the eye may have less refractive power than normal.
Hyperopia can be due to genetic as well as environmental factors.