초록 ▼

Vision in an eye is corrected using an energy source for generating a beam of optical radiation and focusing optics disposed in the path of the beam for directing the beam through the eye, where the beam is reflected back from the retina of the eye as a wavefront of radiation to be measured. An opti

Vision in an eye is corrected using an energy source for generating a beam of optical radiation and focusing optics disposed in the path of the beam for directing the beam through the eye, where the beam is reflected back from the retina of the eye as a wavefront of radiation to be measured. An optical correction based on an optical path difference between the measured wavefront and a desired plane wave, and refractive indices of the media through which the wavefront passes is provided to a laser delivery system with a laser beam sufficient for ablating corneal material from the cornea of the eye. The laser beam is directed at selected locations on the cornea for ablating the corneal material in response to the optical correction to cause the measured wavefront to approximate the desired plane wave, and thus provide an optical correction.

대표청구항 ▼

[ That which is claimed is:] [1.]1. A system comprising:an energy source for generating a beam of optical radiation;focusing optics disposed in the path of said beam for directing said beam through a focusing optical system having a rear portion thereof functioning as a diffuse reflector, wherein sa

[ That which is claimed is:] [1.]1. A system comprising:an energy source for generating a beam of optical radiation;focusing optics disposed in the path of said beam for directing said beam through a focusing optical system having a rear portion thereof functioning as a diffuse reflector, wherein said beam is diffusely reflected back from said rear portion as a wavefront of radiation that passes through said focusing optical system to impinge on said optics, said optics projecting said wavefront in direct correspondence with said wavefront impinging on said optics, said focusing optics comprisinga first lens maintained in a first fixed position in the path of said beam and said wavefront;a second lens maintained in a second fixed position in the path of said beam and said wavefront; andan arrangement of optical elements disposed between said first lens and said second lensin the path of said beam and said wavefront, said arrangement of optical elements being adjustable for changing the optical path length between said first lens and said second lens; anda wavefront analyzer disposed in the path of said wavefront projecting from said optics for calculating distortions of the wavefront as an estimate of aberrations of said focusing optical system.