Patent ID: 7431457

Claim:
A treatment system for use on an eye having an iris with an iris pattern between a pupil and an outer iris boundary, the system comprising: an eye measurement system having a first imaging assembly configured to acquire a first image of the eye, the eye in the first image having a first pupil size; an eye treatment system having a second imaging assembly configured to acquire a second image of the eye, the eye in the second image having a second pupil size; a computer processor in communication with the first imaging assembly and the second imaging assembly so as to receive the first image of the eye and the second image of the eye, the computer processor configured to register a desired refractive treatment generated using the eye measurement system for application to the eye using the eye treatment system by calculating a translation between the first image of the eye and the second image of the eye, and by calculating a torsional rotation between the first image of the eye and the second image of the eye with reference to the iris pattern of the eye, the computer processor configured to accommodate change in size of the pupil between the first size and the second size by scaling the iris pattern.