Title:
WAVEFRONT CHARACTERIZATION
Document Type and Number:
WIPO Patent Application WO2003002025
Kind Code:
A3
Abstract:
Apparatus 11 for determining if a cornea whether in vitro or in vivo has been modified either surgically or otherwise. The method includes the steps of: passing a beam of collimated light 13 a either coherent or incoherent through the cornea to produce a distorted wavefront determining the characteristics of the distorted wavefront and analyzing the distorted wavefront for characteristics that identify the presence of a modification. The analysis of the distorted wavefront can be for the presence of higher order aberrations, or Gausian characteristics which are indicative of modifications. More particularly, the method includes the steps of providing an optical system that has a pupil plane and an image plane at a detector positioning the cornea in the pupil plane passing a collimated beam of light through the cornea to produce at least two images in the image plane determining the characteristics of the distorted wavefront and analyzing the distorted wavefront for characteristics that identify the presence of a modification.
Inventors:
OTTEN L JOHN III
ERRY GAVIN R G
ERRY GAVIN R G
Application Number:
PCT/US2002/019910
Publication Date:
June 19, 2003
Filing Date:
June 24, 2002
Export Citation:
Assignee:
KESTREL CORP (US)
International Classes:
A61B3/103; A61B3/107; G01J9/00; (IPC1-7): A61B3/00
Foreign References:
| US6095651A | 2000-08-01 |
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