FULL DEPTH LASER OPHTHALMIC SURGICAL SYSTEM, METHODS OF CALIBRATING THE SURGICAL SYSTEM AND TREATMENT METHODS USING THE SAME

    公开(公告)号:US20200261269A1

    公开(公告)日:2020-08-20

    申请号:US16868481

    申请日:2020-05-06

    Abstract: A full depth ophthalmic surgical system includes a femtosecond laser source and an optical coherence tomographer. The system is capable of performing surgical procedures along the entire length of the eye from the cornea to the retina. The optical system of the ophthalmic surgical system is optimized to focus the laser beam and imaging light in the vitreous humor of the eye. In some embodiments, the illumination light source and the scanning mirrors are imaged by the system's objective lens and the patient interface lens to locations near the pupil, to increase the volume of the vitreous humor reachable by the illumination light and laser beam. For procedures performed posterior to the lens, a method for calibrating the full depth ophthalmic surgical system is also provided. The system can be used to perform treatment in the vitreous humor, including treating floaters and liquification of the vitreous humor.

    Systems and methods for femtosecond laser photorefractive keratectomy

    公开(公告)号:US10716705B2

    公开(公告)日:2020-07-21

    申请号:US14968618

    申请日:2015-12-14

    Inventor: Hong Fu

    Abstract: Embodiments of this invention generally relate to ophthalmic laser procedures and, more particularly, to systems and methods for photorefractive keratectomy. In an embodiment, an ophthalmic surgical laser system comprises a laser source generating a pulsed laser beam and a laser delivery system delivering the pulsed laser beam to a cornea of an eye. A patient interface couples to and constrains the eye relative to the laser delivery system. A controller controls the laser delivery system to perform an anterior surface volume dissection on the cornea.

    Systems and methods for lenticular laser incision

    公开(公告)号:US10709611B2

    公开(公告)日:2020-07-14

    申请号:US16109654

    申请日:2018-08-22

    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, where each of the top and bottom lenticular incision includes a center spherical portion and an edge transition portion that is not located on the same spherical surface as the spherical portion but has a steeper shape.

    System and method of iris-pupil contrast enhancement

    公开(公告)号:US10695223B2

    公开(公告)日:2020-06-30

    申请号:US15236187

    申请日:2016-08-12

    Abstract: System and method of photoaltering a region of an eye using an enhanced contrast between the iris and the pupil of the imaged eye. The system includes a laser assembly outputting a pulsed laser beam, a user interface displaying one of a first digital image of the eye and a second digital image of the eye, and a controller coupled to the laser assembly and the user interface. The first digital image has a first contrast between the pupil and the iris, and the second digital image has a second contrast between the pupil and the iris. The controller selectively increases the first contrast between the pupil and the iris to the second contrast between the pupil and the iris and directs the pulsed laser beam to the region of the eye based on one of the first and second digital images.

    Water-immersed high precision laser focus spot size measurement apparatus

    公开(公告)号:US10690486B2

    公开(公告)日:2020-06-23

    申请号:US16027137

    申请日:2018-07-03

    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.

    System and method of iris-pupil contrast enhancement

    公开(公告)号:US10687980B2

    公开(公告)日:2020-06-23

    申请号:US15236220

    申请日:2016-08-12

    Abstract: System and method of photoaltering a region of an eye using an enhanced contrast between the iris and the pupil of the imaged eye. The system includes a laser assembly outputting a pulsed laser beam, a user interface displaying one of a first digital image of the eye and a second digital image of the eye, and a controller coupled to the laser assembly and the user interface. The first digital image has a first contrast between the pupil and the iris, and the second digital image has a second contrast between the pupil and the iris. The controller selectively increases the first contrast between the pupil and the iris to the second contrast between the pupil and the iris and directs the pulsed laser beam to the region of the eye based on one of the first and second digital images.

    Additive manufacturing inside the human eye

    公开(公告)号:US10675147B2

    公开(公告)日:2020-06-09

    申请号:US15890153

    申请日:2018-02-06

    Abstract: Additive manufacturing techniques are used to form an artificial intra-ocular lens (IOL) directly inside the human eye. Small openings are formed in the cornea and lens capsule of the eye, and the crystalline lens is broken up and removed through the openings; then, a material is injected into the lens capsule through the openings, and the focal spot of a pulse laser beam is scanned in a defined pattern in the lens capsule, to transform the material in the vicinity of the laser focal spot to form the IOL in a layer-by-layer manner. In one embodiment, stereolithography techniques are used where a pulse UV laser source is used to photosolidify a photopolymer resin. The liquefied resin is injected into the eye through the openings, after which only part of the resin, having the shape of the desired IOL, is selectively cured with the UV laser beam, via progressive layer formation.

    WATER-IMMERSED HIGH PRECISION LASER FOCUS SPOT SIZE MEASUREMENT APPARATUS

    公开(公告)号:US20200011659A1

    公开(公告)日:2020-01-09

    申请号:US16027137

    申请日:2018-07-03

    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.

    FEMTOSECOND LASER SYSTEM AND METHODS FOR PHOTOREFRACTIVE KERATECTOMY

    公开(公告)号:US20190125584A1

    公开(公告)日:2019-05-02

    申请号:US15795124

    申请日:2017-10-26

    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, or just a bottom lenticular incision.

    Treatment validation systems and methods

    公开(公告)号:US10098785B2

    公开(公告)日:2018-10-16

    申请号:US15294070

    申请日:2016-10-14

    Abstract: Treatment validation techniques include generating a modified treatment target from an original treatment target using a modification process, and comparing induced aberrations provided by the original and modified treatment targets, so as to verify the modified treatment target or the modification process. In some cases, a modification process may include a deconvolution process, a low pass filter process, a scaling process, or an adjustment process. The induced aberrations may include high order aberrations, such as spherical aberration.

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