公开(公告)号：US12138201B2

公开(公告)日：2024-11-12

申请号：US17651242

申请日：2022-02-15

Applicant: AMO Development, LLC

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

IPC: A61F9/008 ,  A61B18/20 ,  A61B18/00

Abstract: Embodiments generally relate to ophthalmic laser procedures and, more particularly, to systems and methods for lenticular laser incision. In an embodiment, an ophthalmic surgical laser system comprises a laser delivery system for delivering a pulsed laser beam to a target in a subject's eye, an XY-scan device to deflect the pulsed laser beam, a Z-scan device to modify a depth of a focus of the pulsed laser beam, and a controller configured to form a top lenticular incision and a bottom lenticular incision of a lens in a corneal stroma.

公开(公告)号：US12121476B2

公开(公告)日：2024-10-22

申请号：US17658229

申请日：2022-04-06

Applicant: AMO Development, LLC

Inventor： Wenzhi Gao ,  Hong Fu

IPC: A61F9/008

CPC classification number: A61F9/008 ,  A61F9/00827 ,  A61F2009/0087 ,  A61F2009/00872 ,  A61F2009/00897

Abstract: An ophthalmic laser system and related method for forming a lenticular incision in a corneal lenticule extraction procedure. The lenticular incision is formed by multiple sweeps of a laser scan line along meridians of longitude of the lenticular incision, where the end point of each sweep is connected to the start point of the next sweep by a smooth turning trajectory. The trajectory includes a first circular arc tangentially connected to the first sweep at its end point, a second circular arc tangentially connected to the next sweep at its start point, and a straight line segment tangentially connected to both circular arcs. The smooth trajectory is determined with the given limits of velocity, acceleration and jerk of the XY scanning motors, without using high frequency filters to smooth the trajectory, thereby avoiding unknown changes to the original trajectory and achieving high precision lenticule shapes.

公开(公告)号：US11963907B2

公开(公告)日：2024-04-23

申请号：US17448175

申请日：2021-09-20

Applicant: AMO Development, LLC

Inventor： Mohammad Saidur Rahaman ,  Hong Fu

IPC: A61F9/008 ,  G01J1/42 ,  G02B26/08 ,  G02B27/10 ,  A61B18/20

CPC classification number: A61F9/008 ,  G01J1/4257 ,  G02B26/0875 ,  G02B27/108 ,  A61B2018/20553

Abstract: In a laser beam delivery system for an ophthalmic laser system, a single multi-use beam sampler is employed to form three sampled laser beams, including two for redundant laser energy monitoring and one for laser focal point depth measurement. The beam sampler is a transparent plate with preferably parallel front and back surfaces. The front surface reflects a fraction of the incoming beam to form the first sampled beam toward an energy monitoring detector. The back surface reflects another fraction of the beam to form a second sampled beam exiting backwardly from the front surface toward another energy monitoring detector. An objective lens focuses the transmitted beam onto a target, and collects back reflected or scattered light from the target to form a return beam. The back surface of the beam sampler reflects a fraction of the return beam to form the third sampled beam toward a third detector.

公开(公告)号：US20230320898A1

公开(公告)日：2023-10-12

申请号：US17658229

申请日：2022-04-06

Applicant: AMO Development, LLC

Inventor： Wenzhi Gao ,  Hong Fu

IPC: A61F9/008

CPC classification number: A61F9/008 ,  A61F9/00827 ,  A61F2009/00897 ,  A61F2009/00872 ,  A61F2009/0087

Abstract: An ophthalmic laser system and related method for forming a lenticular incision in a corneal lenticule extraction procedure. The lenticular incision is formed by multiple sweeps of a laser scan line along meridians of longitude of the lenticular incision, where the end point of each sweep is connected to the start point of the next sweep by a smooth turning trajectory. The trajectory includes a first circular arc tangentially connected to the first sweep at its end point, a second circular arc tangentially connected to the next sweep at its start point, and a straight line segment tangentially connected to both circular arcs. The smooth trajectory is determined with the given limits of velocity, acceleration and jerk of the XY scanning motors, without using high frequency filters to smooth the trajectory, thereby avoiding unknown changes to the original trajectory and achieving high precision lenticule shapes.

公开(公告)号：US20230277377A1

公开(公告)日：2023-09-07

申请号：US17653127

申请日：2022-03-01

Applicant: AMO Development, LLC

Inventor： Hong Fu

IPC: A61F9/008 ,  A61F9/013

CPC classification number: A61F9/00827 ,  A61F9/013 ,  A61F2009/0088

Abstract: A ophthalmic laser-assisted corneal lenticule extraction procedure that uses wavefront measurements to guide the formation of the corneal lenticule. The wavefront map measured from a free eye using a wavefront aberrometer is registered to the cornea of a docked eye based on comparisons of iris images and corneal markings. The docked-eye cornea-registered wavefront map is then corrected to be consistent with the Munnerlyn formula for the spherical power, and adjusted for any physician adjustments and/or myopia error due to a flat add in the lenticule, using Zernike polynomials. The corrected and adjusted wavefront map is then used to calculate the profiles of the bottom and top lenticule incisions in the applanated cornea, where higher-order components in the wavefront map are distributed to the bottom lenticule incision alone and lower-order components in the wavefront map are distributed to both the bottom and the top lenticule incision.

公开(公告)号：US11737921B2

公开(公告)日：2023-08-29

申请号：US17451762

申请日：2021-10-21

Applicant: AMO DEVELOPMENT, LLC

Inventor： Anthony W. Dennison ,  Michael A. Campos ,  Hong Fu

IPC: A61F9/008

CPC classification number: A61F9/0084 ,  A61F9/00825 ,  A61F2009/0087 ,  A61F2009/00851 ,  A61F2009/00863 ,  A61F2009/00887

Abstract: Some embodiments disclosed here provide for a method fragmenting a cataractous lens of a patient's eye using an ultra-short pulsed laser. The method can include determining, within a lens of a patient's eye, a high NA zone where a cone angle of a laser beam with a high numerical aperture is not shadowed by the iris, and a low NA zone radially closer to the iris where the cone angle of the laser beam with a low numerical aperture is not shadowed by the iris. Laser lens fragmentation is accomplished by delivering the laser beam with the high numerical aperture to the high NA zone, and the laser beam with the low numerical aperture to the low NA zone. This can result in a more effective fragmentation of a nucleus of the lens without exposing the retina to radiation above safety standards.

公开(公告)号：US20230175838A1

公开(公告)日：2023-06-08

申请号：US18157729

申请日：2023-01-20

Applicant: AMO DEVELOPMENT, LLC

Inventor： Zheng Sun ,  Daniel Bray ,  Zenon Witowski ,  Timothy Slotterback ,  Hong Fu

IPC: G01B11/24

CPC classification number: G01B11/2408

Abstract: A measurement apparatus for measuring a laser focus spot size, which includes a two-dimensional image detector and an imaging system which forms a magnified image of a focus spot located an object plane onto the image detector. The imaging system includes at least an objective lens. A sealed liquid container is secured over a part of the objective lens such as the optical surface of the objective lens is immersed in the liquid (e.g. water) within the container. The liquid container has a window through which the laser beam enters. An image processing method is also disclosed which processes the image obtained by the image detector to obtain the focus spot size while implementing an algorithm that corrects for the effect of ambient vibration.

公开(公告)号：US11259964B2

公开(公告)日：2022-03-01

申请号：US16530945

申请日：2019-08-02

Applicant: AMO Development, LLC

Inventor： Hong Fu

IPC: A61F9/008

Abstract: Embodiments of this invention generally relate to ophthalmic laser procedures and, more particularly, to systems and methods for lenticular laser incision. In an embodiment, an ophthalmic surgical laser system comprises a laser delivery system for delivering a pulsed laser beam to a target in a subject's eye, an XY-scan device to deflect the pulsed laser beam, a Z-scan device to modify a depth of a focus of the pulsed laser beam, and a controller configured to form a top lenticular incision and a bottom lenticular incision of a lens in the subject's eye.

公开(公告)号：US20210128358A1

公开(公告)日：2021-05-06

申请号：US17095722

申请日：2020-11-11

Applicant: AMO DEVELOPMENT, LLC

Inventor： Hong Fu ,  Alireza Malek Tabrizi ,  Nima Khatibzadeh

IPC: A61F9/008

Abstract: An ophthalmic surgical laser system and method for forming a lenticule in a subject's eye using “fast-scan-slow-sweep” scanning scheme. A high frequency scanner forms a fast scan line, which is placed by the XY and Z scanners at a location tangential to a parallel of latitude of the surface of the lenticule. The XY and Z scanners then move the scan line in a slow sweep trajectory along a meridian of longitude of the surface of the lenticule in one sweep. Multiple sweeps are performed along different meridians to form the entire lenticule surface, and a prism is used to change the orientation of the scan line of the high frequency scanner between successive sweeps. In each sweep, the sweeping speed along the meridian is variable, being the slowest at the edge of the lenticule and the fastest near the apex.

公开(公告)号：US20210022917A1

公开(公告)日：2021-01-28

申请号：US17067541

申请日：2020-10-09

Applicant: AMO DEVELOPMENT, LLC

Inventor： Roger W. Accurso ,  Jose L. Garcia ,  Daryl Wong ,  Hong Fu ,  Harvey Liu ,  Leonard R. Borrmann

IPC: A61F9/009

Abstract: A single-piece patient interface device (PI) for coupling an patient's eye to an ophthalmic surgical laser system, which includes a rigid shell, a flexible suction ring joined to a lower edge of the shell, an applanation lens, and a flexible annular diaphragm which joins the applanation lens to the shell near the lower edge of the shell. The flexible diaphragm allows the applanation lens to move relative to the shell, including to shift in longitudinal and lateral directions of the shell and to tilt. In operation, the surgeon first secures the PI to the patient's eye by hand, and then couples the laser system to the PI by lowering the laser delivery head into the PI shell. During the lowering process, the laser delivery head presses the applanation lens down relative to the PI to applanate the cornea of the eye.