One of the main function of the eye is that of refracting the light rays so that they focus on the retina: the eye optical system must be very powerful to focus the parallel light rays in such a little space. In all those situations where light rays are not focused on the retina, there is a vision problem, that is, a refractive error.
In other words, refractive errors are optical eye defects in which the light rays coming from infinity do not focus on the retina, but in the front (myopia), on the behind (hyperopia, presbyopia), or partly on the retina and partly on the front or behind it (simple astigmatism), or in the front and partly on the behind of the retina (mixed astigmatism).
Laser has revolutionized refractive surgery because it allows quickly and non- invasively to correct and eliminate vision problems and disorders.
Vista Vision clinics, thanks to continuous and considerable investments, are equipped with latest-generation (FEMTOLASIK) and revolutionary (SMILE) laser techniques, advanced diagnostic instrumentation, and the best eye specialists in refractive surgery, to correct vision problems such as myopia, hyperopia, presbyopia and astigmatism.