Hyperopia, also known as long-sightedness, occurs when the eyeball is too short, or the refraction of the eye is too low. Thus, the focal point is behind the retina rather than on it.
The closer an object is to the eye, the more blurred one sees it.
Individuals who suffer from severe long-sightedness do not see objects clearly, which are close or far away. A person with hyperopia has a positive dioptre count (for example, +4.0 dioptres).