System for forming and modifying lenses and lenses formed thereby
OwnerJosef F. Billeinventor
Life of this patent
Estimating the term…
Abstract
A lens for placement in a human eye, such as intraocular lens, has at least some of its optical properties formed with a laser. The laser forms modified loci in the lens when the modified loci have a different refractive index than the refractive index of the material before modification. Different patterns of modified loci can provide selected dioptic power, toric adjustment, and/or aspheric adjustment provided. Preferably both the anterior and posterior surfaces of the lens are planar for ease of placement in the human eye.
Claims14
1-64. (canceled)
A system for modifying an optical property of a polymeric disc sized for use in a human eye and having opposed surfaces, the system comprising:
- a) a laser for emitting a pulsed beam;
- b) a modulator for controlling the pulse rate of the beam;
- c) a focusing lens for focusing the beam into a first region in the disc;
- d) a scanner for distributing the focused beam into a plurality of contiguous loci in the first region, the focused beam causing the nonlinear absorption of photons in the contiguous loci resulting in a change to the refractive index of each locus and forming a portion of a contiguous patterned microstructure within the layer, wherein the contiguous patterned microstructure modifies the optical property of the disc;
- e) means for repositioning the disc relative to the focusing lens so as to focus the beam into a second region in the disc.
77-110. (canceled)
Dependencies are inferred from the claim text.