Short-sightedness is when objects in the distance are seen blurred. It is also referred to as “myopia”.
An eye is short-sighted if it is built too long in relation to the refractive power or if the optical system is too refractive. (or both combined). As a result, the incoming light rays are not imaged on but in front of the retina.
In the healthy eye, the light beam falls perfectly on the retina.
In myopia, the eye is too long, which means that the light does not fall optimally on the retina.
Glasses or contact lenses refract the light so that it falls on the retina. You see sharply again!
We correct this deviation with the help of prescription glasses or contact lenses. In this case, lenses with a negative dioptre are used so that the focal point is not in front but rather on the retina.
The origin of a myopia can often be traced back to genetic inheritance. However, it can also be a side effect of diseases, for example, a pathology of the cornea or a cataract.
