With the help of the LASEK procedure can be avoided interface-related problems that may arise from application of the micro keratome. In the traditional LASIK the cornea is cut with a precision knife (a microkeratome) in the first step of treatment. The resulting Hornhautflap is then folded away. This is followed by the laser with the excimer laser. This cut eliminates the LASEK.

Only the top layer of the cornea is removed using a solution of alcohol and then modelled the cornea with excimer laser. What is the cause of the short-sightedness and long sightedness who suffers a vision must wear either glasses or contact lenses. Why actually? The eye is an extremely complex organ and at the same time one of the most important human sense organs. How well and how sharp we see in particular depends from how the light that enters the eye, is broken. Next to the lens the cornea contributes more with how the light is broken.

In a normalsichtigem eye beams converge exactly to a point on the retina. The retina is also called the retina. The recorded signals are then routed to the optic nerve and processed in the brain. Myopia is characterised by the light rays that fall into the eye, unite in a point in front of the retina. The eye is too long in relation to the refractive power of the eye. Affected but out of focus see close to sharp, but from a certain distance. The technical term for short-sightedness is myopia. When the farsightedness (hyperopia), it is exactly the other way around: people see in the distance sharp, but objects at a short distance can be seen just out of focus. The reason is that light rays that meet the eye, unite behind the retina in a point. The eyeball is too short in terms of the refractive power of the eye.

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