Patent ID: 6988801
Filing Date: 2006-01-24
Classification: A61B

Abstract:
1. A device for measuring aberrations of an eye, comprising: a first light source adapted to reflect light off the eye's retina so as to produce a wavefront, the wavefront propagating along an optical path; a lens disposed along the optical path for receiving the light from the wavefront; a reflective surface disposed to reflect the light from the wavefront that is received by the lens back through the lens, so as to produce an image of the wavefront; and wherein a wavefront sensor may be adapted to receive the light from the wavefront that is reflected back through the lens so as to provide a measure of the aberrations of the eye; wherein the device further comprises a second light source disposed to illuminate the eye; the first light source provides light primarily at a first wavelength; and the second light source provides light primarily at a second wavelength different from the first wavelength; and wherein the reflective surface comprises a dichroic filter; light from the first light source is reflected by the reflective surface; and light from the second light source is transmitted through the reflective surface.