With its 20 years of experience, Lasik in kraff eye institute for example is still today the reference technique in myopia surgery and the one to which the majority of candidates for myopia surgery turn.

While it was initially a technique intended to operate on high myopia, thus taking over from the indications of PKR, it fairly quickly “nibbled” the indications of PKR by positioning itself as the main technique for myopia operations.

Due to the simplicity of its postoperative course, it is also the first-line technique for surgeons, although there is a “French exception” in this area since surface techniques, whether PKR or its derivatives, is still widely used in France, for example.

If there is no lower limit to myopia that can benefit from Lasik, there is an upper limit because the indications for Lasik are very rare beyond 8 or 9 diopters of myopia. In addition, for a given candidate, the possibility or not of resorting to Lasik to surgically correct myopia depends on a certain number of parameters analyzed during the preoperative assessment.

The most favorable situation is that of a thick and relatively arched cornea. Indeed, the corneal thinning induced by surgery is proportional to myopia being corrected, and high myopia will be more easily operable if the cornea is thick enough at the start. In addition, myopia surgery also induces a central flattening which is also not without limit, at the risk of altering the quality of vision. A curved cornea will thus be more favorable than a flat cornea if the myopia is significant. It is still necessary, however, that it is not too arched, which could put it in the category of corneas at risk, hence the importance of the other parameters analyzed during the initial assessment.

Other factors are taken into account, in particular, the pupillary diameter in nocturnal conditions, to adapt the treatment zone to this pupillary diameter while keeping in mind that the widening of the treatment zone also increases its depth and increases corneal thinning.

We have software that can simulate the treatment to anticipate the cornea’s thickness after the operation.

When the thinning to be expected is excessive, in low and medium myopia, we can fall back on surface techniques, warning the patient of the painful nature of the early postoperative consequences and the delay of a few days necessary to recover useful vision.

When it comes to high myopia, the technique of phakic implants may be the only alternative to Lasik in a young patient using refractive lens exchange surgery near me.