Patent ID: 7052490
Filing Date: 2006-05-30
Classification: A61B,A61F

Abstract:
1. A correction data determining method of determining refractive correction data for a corneal refractive surgery apparatus with a laser beam causing ablation of corneal tissue of a patient's eye, comprising: a process in which an ophthalmic examination of the patient's eye including a refractive power inspection is performed, and data on prescription provided to the patient's eye is obtained; a process in which a first contact lens for providing the patient's eye with refractive power of a first correction pattern having a first far vision and near vision zone pattern, which corresponding to the obtained data on prescription is prepared, the first correction pattern of the first contact lens being created in association with correction patterns available with the corneal refractive surgery apparatus; a process in which the first contact lens is put on the patient's eye for a trial use and a result of the trial use is checked to determine whether the result is good or bad; and a process in which, if the trial use of the first contact lens bears a good result, a corneal refractive correction pattern for the patient's eye is determined based on the first correction pattern of the first contact lens, and if the trial use of the first contact lens bears a bad result, a second contact lens for providing the patient's eye with refractive power of a second correction pattern having a second far vision and near vision zone pattern, which is different from the first correction pattern, is put on the patient's eye for a trial use, the second correction pattern of the second contact lens being created in association with the correction patterns available with the corneal refractive surgery apparatus, whereby the corneal refractive correction pattern for the patient's eye is determined based on a correction pattern of a contact lens of which a trial use bears a good result.