Wavefront & Aberration Analyzers

L aser-Assisted In-Situ Keratomileusis (LASIK) eye surgery has become a common surgical procedure in the last years [1]. 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 [2] 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.