公开(公告)号：US20220062049A1

公开(公告)日：2022-03-03

申请号：US17446018

申请日：2021-08-26

Applicant: AMO Development, LLC

Inventor： Hong Fu ,  Mohammad Saidur Rahaman ,  Alireza Malek Tabrizi ,  Zenon Witowski ,  Griffith Altmann

IPC: A61F9/008

Abstract: A method for forming deep corneal lamellar incision parallel to the posterior corneal surface when the eye is docked to the patient interface. A lower-energy detecting beam generated by the same pulsed laser that generates the higher-energy treatment laser beam is utilized to measure the posterior corneal surface profile. The detecting beam is scanned in the eye according to a first 3-dimensional scan pattern, while intensity of the back-reflected light is measured by a light intensity detector. The first scan pattern may be a spiral pattern in the X-Y plane coupled with a Z direction oscillation function. Peaks of the light intensity signal are detected, and corresponding spatial positions of the focus point are obtained; a known offset distance is added to the depth value to obtain the posterior corneal surface profile. Based thereon, the treatment laser beam is scanned in the eye to form the deep corneal lamellar incision.

公开(公告)号：US20210275017A1

公开(公告)日：2021-09-09

申请号：US17057105

申请日：2019-11-11

Applicant: AMO Development, LLC

Inventor： Zenon Witowski ,  Mohammad Saidur Rahaman ,  Daryl Wong

IPC: A61B3/14 ,  A61B3/00 ,  A61F9/008

Abstract: An imaging system for an ophthalmic laser system includes a prism cone made of a transparent optical material and disposed downstream of the focusing objective lens of the ophthalmic laser system, the prism cone having an upper surface, a lower surface parallel to the upper surface, a tapered side surface between the upper and lower surfaces, and a beveled surface formed at an upper edge of the prism cone and intersecting the upper surface and the side surface, and a camera disposed adjacent to the prism cone and facing the beveled surface. The camera is disposed to directly receive light that enters the lower surface of the prism cone and exits the beveled surface without having been reflected by any surface.

公开(公告)号：US10792188B2

公开(公告)日：2020-10-06

申请号：US15782791

申请日：2017-10-12

Applicant: AMO DEVELOPMENT, LLC

Inventor： Alireza Malek Tabrizi ,  Hong Fu ,  James E. Hill ,  Zenon Witowski

IPC: A61F9/008

Abstract: An ophthalmic surgical laser system includes: a laser that produces a pulsed laser beam having a pulse energy and pulse repetition rate; a high frequency fast scanner; an XY-scan device; a Z-scan device; and a controller. The controller controls the high frequency scanner to produce a scan line having a scan width; controls the XY-scan device and the Z-scan device to carry out of first sweep of the scan line in a first sweep direction and to carry out a second sweep of the scan line in a second sweep direction that is not parallel to the first sweep direction thereby defining an overlap region. At least one of the pulse energy, repetition rate, XY-scan speed, and the scan width is varied so as to accelerate the cutting speed and reduce the exposure of ophthalmic tissue in the overlap region to multiple exposures of laser pulses configured to modify ophthalmic tissue.