公开(公告)号：US20190307554A1

公开(公告)日：2019-10-10

申请号：US16375784

申请日：2019-04-04

Applicant: OPTIMEDICA CORPORATION

Inventor： Georg Schuele ,  Alexander Vankov ,  Jenny Wang ,  David A. Dewey ,  Tianheng Wang ,  Michael Wiltberger ,  Mihai State ,  Phillip Gooding

IPC: A61F2/16 ,  B29D11/02

Abstract: A method of altering a refractive property of a crosslinked acrylic polymer material by irradiating the material with a high energy pulsed laser beam to change its refractive index. The method is used to alter the refractive property, and hence the optical power, of an implantable intraocular lens after implantation in the patient's eye. In some examples, the wavelength of the laser beam is in the far red and near IR range and the light is absorbed by the crosslinked acrylic polymer via two-photon absorption at high laser pulse energy. The method also includes designing laser beam scan patterns that compensate for effects of multiphone absorption such as a shift in the depth of the laser pulse absorption location, and compensate for effects caused by high laser pulse energy such as thermal lensing. The method can be used to form a Fresnel lens in the optical zone.