Claims
- 1. A method of reconstructing height data from axial distance data, said method comprising:
measuring a corneal surface; determining a best-fit ellipsoid to said measured corneal surface; and performing height reconstruction with reference to a single point using an ellipse arc-step method.
- 2. The method of reconstructing height data from axial distance data according to claim 1, wherein:
said single point is a visual center of said corneal surface.
- 3. The method of reconstructing height data from axial distance data according to claim 1, wherein said best-fit ellipsoid comprises:
a fit along a visual axis of said corneal surface.
- 4. The method of reconstructing height data from axial distance data according to claim 1, wherein said best-fit ellipsoid comprises:
a fit along an optical (geometric) axis of said corneal surface.
- 5. The method of reconstructing height data from axial distance data according to claim 1, wherein said best-fit ellipsoid comprises:
a fit along a pupillary axis of said corneal surface.
- 6. The method of reconstructing height data from axial distance data according to claim 1, wherein said ellipse arc-step method comprises:
height reconstruction in a three-dimensional domain.
- 7. The method of reconstructing height data from axial distance data according to claim 1, wherein said ellipse arc-step method comprises:
height reconstruction in a two-dimensional domain.
- 8. Apparatus for reconstructing height data from axial distance data, comprising:
means for measuring a corneal surface; means for determining a best-fit ellipsoid to said measured corneal surface; and means for performing height reconstruction with reference to a single point using an ellipse arc-step method.
- 9. The apparatus for reconstructing height data from axial distance data according to claim 8, wherein:
said single point is a visual center of said corneal surface.
- 10. The apparatus for reconstructing height data from axial distance data according to claim 8, wherein said means for determining a best-fit ellipsoid comprises:
means for providing a fit along a visual axis of said corneal surface.
- 11. The apparatus for reconstructing height data from axial distance data according to claim 8, wherein said means for determining a best-fit ellipsoid comprises:
means for providing a fit along an optical (geometric) axis of said corneal surface.
- 12. The apparatus for reconstructing height data from axial distance data according to claim 8, wherein said means for determining a best-fit ellipsoid comprises:
means for providing a fit along a pupillary axis of said corneal surface.
- 13. The apparatus for reconstructing height data from axial distance data according to claim 8, wherein said ellipse arc-step method comprises:
means for providing height reconstruction in a three-dimensional domain.
- 14. The apparatus for reconstructing height data from axial distance data according to claim 8, wherein said ellipse arc-step method comprises:
means for providing height reconstruction in a two-dimensional domain.
Parent Case Info
[0001] This Application is based on and claims priority from U.S. Provisional Application No. 60/308,133 filed on Jul. 30, 2001, the entirety of which is expressly incorporated herein by reference.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60308133 |
Jul 2001 |
US |