What is laser eye surgery?

After the mid-90s most people with myopia, astigmatism and hypertrophy were finally able to correct their vision defects thanks to an innovative and painless surgical procedure: LASIK, which stands for "Laser-Assisted In Situ Keratomileusis" or "keratomileusis with excimer laser", is the only surgical technique to date suitable for this kind of operation and vision improvement treatment.

The laser eye surgery improves a patient's sight, leading to highly satisfactory outcomes, and finally eliminating the need for glasses and contact lenses. Nonetheless, before undertaking this kind of surgery, even though absolutely painless and virtually risk free, the doctor should explain the risks and benefits associated with the technique.


The eyes are in fact a very sophisticated organ of the human body that serve to gather light and to focus, thus giving us sight. The goal of refractive surgery is to refocus the images on the retina by means of a widely used approach to restructure the cornea, which is the most external and superficial part of the eye through which light enters and puts objects into focus.

This operation is done through the excimer laser, i.e. a device that emits high-intensity ultraviolet radiation to remove tissue in quantities of a few thousandths of a millimetre per stroke, instantly vaporising and changing the cornea profile evenly and precisely.