Wavefront & Aberration Analyzers

Laser-Assisted In-Situ Keratomileusis (LASIK) eye surgery has become a common surgical procedure in the last years [9]. During a LASIK procedure the shape of the cornea is altered using an excimer or picoseconds laser source with the idea of reducing or removing a person’s need for glasses or contact lenses. LASIK surgery systems with a built-in wavefront analysis system allow for extremely precise and individualized procedures. Typically, a so-called Shack- Hartmann wavefront sensor [10] in combination with a CCD camera is used to measure and correct higher-order ocular wavefront aberrations. In order to reduce interference speckle noise of the recorded CCD image, a broadband SLED light source in the wavelength range 750 to 850 nm is used [2]. (SLED)