Farsightedness (Hyperopia)
The light beams only connect on the retina in eyes with hyperopia.
Therefore, the focal point is localized behind the retina.
Generally, distant objects are seen clearly, but close ones are seen cloudy.
One of the main causes of hyperopia is a short eyeball
Individuals with mild hyperopia can see both close and distant objects clearly at young ages up to + 2 diopter. At advanced ages, the elasticity and flexibility of the lens decreases and it can no longer accommodate. In addition, the ciliary muscle loses its ability to contract to move lens ligaments. Patients with hyperopia at advanced ages can not see close and distant objects clearly. Patients with advanced hyperopia (above +2 diopter) can not see close and distant objects clearly even at young ages.
Hyperopia has three types:
1.Hyperopia related with length:
In this type of hyperopia, the eyeball is shorter than normal. Therefore, the focal point is localized behind the retina.
2.Hyperopia related with curvature:
In this type of hyperopia, light beams are refracted because of the curvature of the cornea or lens. This also causes the focal point to be localized behind the retina.
3.Hyperopia related with refraction:
The cause of hyperopia related with refraction is reduction in the refraction power of the lens related with aging.