Laser that emits very concentrated light in the ultraviolet (UV) region of the spectrum.
Excimer lasers are used, for example, in:
Ophthalmology — to vaporize part of the surface layer of the cornea and thus reshape the cornea to correct refractive errors from myopia(nearsightedness), hyperopia (farsightedness), and astigmatism.
An excimer laser uses a noble-gas halide. Excimer is a chemical term that refers to a substance formed by the joining of two atoms or two molecules of the same chemical composition in an excited state; it is an excited dimer.
The process through which visual impairments (myopia, hypermetric, and astigmatic) are corrected with completely computerized Excimer Laser devices that reshape the eye’s the transparent layer, cornea, can be briefly called “visual correction with Laser”.
When applied on the cornea tissue on the front region of the eye, Excimer laser causes breaking of the carbon bonds that hold the tissue in the cornea together, and thus makes the tissue evaporate and vanish. In Excimer laser, when the completely adjusted laser is directed to the requested points on the cornea, a certain part of the cornea can be planed. Thus, refractivity of the cornea changes and reaches the demanded value.
Treatment of refraction errors via Excimer laser method has been used for more than 25 years throughout the world, and for 22 years in Turkey. In the meantime, both laser devices and application methods significantly changed. With each new development, getting better and demanded results, providing excellent comfort for the patient, and reducing complications became possible. While it was initially applied with PRK method, Excimer laser has reached to Femto-Lasik procedure today.
Who can have Excimer Laser Treatment?
In a normal eye with no refraction issue, image of an object forms on the retina where the image is fully perceived.
*Myopic people: In myopic people’s eyes, the cornea surface is excessively concave or the length of the eye is more than the usual. These paints view far objects blurry since the image forms in front of the retina.
* Hypermetropic people: These are the patients whose corneas are smoother than the usual, and length of the eye is shorter than the normal. Thus, the image forms behind the retina. For hypermetric eyes, difficulties in seeing far objects are more severe than difficulties in seeing nearer objects.
*Astigmatism: When the surface of the eye is curved like an egg, th