Corneal surgery device and method

A laser apparatus includes an eye tracking system for biasing the alignment of the position of a laser beam with respect to the cornea of an eye which comprises indicator means providing visible indications of movement of the eye, sensor means for detecting the visible indications, and laser beam positioning means coupled to the sensor means for biasing the alignment of the laser beam. The apparatus preferably further includes a guide beam generation system for generating a visible guide beam coaxial with laser pulses, and a wavelength converter for converting the fundamental wavelengths of original incident laser pulses in to corresponding second harmonic wavelengths. Methods of tracking the movement of an eye, generating a guide beam, and converting the wavelength of a laser, are also disclosed.