Laser vision correction has revolutionized eye surgery. Myopia, astigmatism, and hyperopia can all be treated effectively with the non-thermally damaging and precisely controllable ArF excimer laser beam. This technique has already helped millions of people since the early 1990s to enjoy life without glasses or contact lenses. Coherent is the leading supplier of light sources for this rapidly-expanding industry.
By being the first to engineer extremely reliable, high-repetition-rate excimer lasers specifically for this application, we have become the supplier of choice for many industry leaders in vision correction. Being successful in this industry depends not only on laser performance, but also on the quality of the system. Because laser vision correction is not a medical necessity, it is considered cosmetic surgery and as such it is closely supervised by the FDA and other regulatory agencies around the world. These regulatory bodies require the highest standards in product quality and safety.
All Coherent systems meet or exceed these standards and we continue to maintain and improve our comprehensive ISO 9001:2000 quality-management system.
Today, Coherent is the leading supplier of excimer lasers for refractive error correction systems. At least 35% of all refractive surgeries (more than 1 million procedures annually) are performed with our lasers. We continue to be the industry leader as we supply the next step in refractive surgery technology: customized vision correction.
The diagrams show the principle of cornea reshaping for myopic and hyperopic vision correction and laser application. The accuracy of the ArF excimer laser ablation is essential for the predictability and safety of laser vision correction. Only this laser source enables the precise reshaping in the necessary sub µm range.
Images courtesy of VSDAR, Munich
Correction of refractive errors (shortsightedness and farsightedness as well as astigmatism) with an excimer laser is a safe and effective procedure which can restore the natural vision of the patients.