SELECTION OF A PREFERRED INTRAOCULAR LENS BASED ON RAY TRACING

    公开(公告)号:AU2021396599A9

    公开(公告)日:2024-10-03

    申请号:AU2021396599

    申请日:2021-10-14

    Applicant: ALCON INC

    Abstract: A system and method for selecting a preferred intraocular lens, for implantation into an eye, includes a controller having a processor and a tangible, non-transitory memory on which instructions are recorded. The controller is in communication with a diagnostic module adapted to store pre-operative anatomic data of the eye as an eye model. The controller is configured to determine respective imputed post-operative variables for each of a plurality of intraocular lenses, via a projection module. A respective pseudophakic eye model is generated for each of the plurality of intraocular lenses by incorporating the respective imputed post-operative variables into the eye model. A ray tracing module is executed in the respective pseudophakic eye model to determine at least one respective metric for the plurality of intraocular lenses. The preferred intraocular lens is selected based on a comparison of the respective metric.

    Method and system for measuring optical parameters

    公开(公告)号:AU2020402660A1

    公开(公告)日:2022-05-19

    申请号:AU2020402660

    申请日:2020-12-07

    Applicant: ALCON INC

    Abstract: A method (400) of verifying ophthalmic measurements includes obtaining (402), via an ophthalmic measurement device (102), a first measurement of at least one ophthalmic parameter over a first measurement area (202). The first measurement area corresponds to an unassisted visible area of a patient's eye (104). A second measurement of the at least one ophthalmic parameter over a second measurement area (302) is obtained (406) via the measurement device (102). The second measurement area (302) corresponds to an assisted visible area of the patient's eye (104). The first measurement is compared (408) to the second measurement. It is determined (410) if the second measurement diverges from the first measurement. Responsive to a determination that the second measurement diverges from the first measurement, an alert that the second measurement is inaccurate is generated (414). Responsive to a determination that the second measurement does not diverge from the first measurement, the second measurement is accepted as accurate (412).

    Powered case for electro-active medical device battery management

    公开(公告)号:AU2016373538B2

    公开(公告)日:2021-12-02

    申请号:AU2016373538

    申请日:2016-12-12

    Applicant: ALCON INC

    Abstract: A powered case is provided that includes a case, configured to hold an electroactive medical device with an integrated battery; an energizing system, configured to provide electric energy; and an energy transfer system, configured to receive energy from the energizing system; and to transfer the received energy to the integrated battery of the electroactive medical device. Further, a medical device system is provided that can include an electroactive medical device, including an integrated battery; and a powered case, including a case, configured to hold the electroactive medical device with the integrated battery; an energizing system, configured to provide electric energy; and an energy transfer system, configured to receive energy from the energizing system; and to transfer the received energy to the integrated battery of the electroactive medical device.

    ADAPTIVE WAVEFRONT MODULATION SYSTEM AND METHOD FOR REFRACTIVE LASER SURGERY

    公开(公告)号:CA2414625C

    公开(公告)日:2009-09-01

    申请号:CA2414625

    申请日:2002-12-17

    Applicant: ALCON INC

    Abstract: A method for optimizing a prescription for laser-ablation corneal treatment includes the steps of receiving a measured correction prescription for a current patient having a classification element associated therewith, the prescription having been measured using wavefront determination. A database of treatment outcomes on a plurality of previously treated patients is accessed, each treated patient outcome having associated therewith at least one classification element and comprising a preoperative wavefront- determined correction prescription and a postoperative visual profile. From the treatme nt outcomes in the database is calculated an average difference between the preoperative prescription and the postoperative profile for at least some of the previously treated patients having a classification element in common with the current patient. Finally the curre nt patient correction prescription is adjusted commensurate with the calculated average difference to form an optimized prescription.

    OPTIMIZACION DE LA CORECCION POR ABLACION DE UN SISTEMA OPTICO.

    公开(公告)号:ES2277079T3

    公开(公告)日:2007-07-01

    申请号:ES03729593

    申请日:2003-01-08

    Applicant: ALCON INC

    Abstract: Sistema para convertir datos de frente de onda medidos en un perfil de ablación para corregir defectos visuales que comprende: un procesador (62); y una base de datos que comprende unos datos acumulados (61) en ojos tratados previamente; software (63) residente en el procesador; caracterizado porque dicho software está adaptado para: modelar los datos de frente de onda medidos como un polinomio que comprende una pluralidad de coeficientes, correlacionar los datos de frente de onda medidos con los datos acumulados (61), correlacionando cada coeficiente con por lo menos un coeficiente de los datos acumulados, comprendiendo los datos acumulados (61) polinomios, cada uno comprendiendo una pluralidad de coeficientes, y aplicar un ajuste a los datos de frente de onda medidos basándose en la etapa de correlación para formar datos de frente de onda ajustados para introducirlos en un algoritmo de corrección de datos de frente de onda para calcular a partir de los mismos un perfil de ablación corneal.

    27.
    发明专利
    未知

    公开(公告)号:AT333128T

    公开(公告)日:2006-08-15

    申请号:AT02027973

    申请日:2002-12-13

    Applicant: ALCON INC

    Abstract: A method for optimizing a prescription for laser-ablation corneal treatment includes the steps of receiving a measured correction prescription for a current patient having a classification element associated therewith, the prescription having been measured using wavefront determination. A database of treatment outcomes on a plurality of previously treated patients is accessed, each treated patient outcome having associated therewith at least one classification element and comprising a preoperative wavefront-determined correction prescription and a postoperative visual profile. From the treatment outcomes in the database is calculated an average difference between the preoperative prescription and the postoperative profile for at least some of the previously treated patients having a classification element in common with the current patient. Finally the current patient correction prescription is adjusted commensurate with the calculated average difference to form an optimized prescription.

    Apparatus and method for objective measurements of optical systems using wavefront analysis

    公开(公告)号:AU783649B2

    公开(公告)日:2005-11-17

    申请号:AU2985501

    申请日:2001-03-23

    Applicant: ALCON INC

    Abstract: An apparatus for determining aberrations of an eye includes a patient head rest allowing for positioning adjustment. The patient head rest is operable with an optical table having a base. The base includes a probe beam generating apparatus, probe beam directing optics which itself comprises a beam splitter; a mirror; and a lens. The probe beam directing optics is capable of directing a probe beam toward an eye of a patient positioned on the patient head rest. Video image components are provided and comprise a light source, a mirror; and a video camera. The video image components are capable of generating an image of an eye of a patient positioned on the patient head rest. Eye fixation components generate a target that the eye of a patient positioned on the patient head rest can view. The eye fixation components comprise a fixation target, a light source, a lens, and a mirror. Wavefront directing and analyzing components measure a wavefront emanating from the eye of a patient positioned on the patient head rest and determine aberrations of the eye that range from at least about + or - 1 diopters to at least about + or - 6 diopters. The wavefront directing and analyzing components include a lens; a mirror, a microlens array, a camera, and a data processor.

    29.
    发明专利
    未知

    公开(公告)号:DE60104236D1

    公开(公告)日:2004-08-19

    申请号:DE60104236

    申请日:2001-04-05

    Applicant: ALCON INC

    Abstract: An apparatus for determining aberrations of an eye includes a patient head rest allowing for positioning adjustment. The patient head rest is operable with an optical table having a base. The base includes a probe beam generating apparatus, probe beam directing optics which itself comprises a beam splitter; a mirror; and a lens. The probe beam directing optics is capable of directing a probe beam toward an eye of a patient positioned on the patient head rest. Video image components are provided and comprise a light source, a mirror; and a video camera. The video image components are capable of generating an image of an eye of a patient positioned on the patient head rest. Eye fixation components generate a target that the eye of a patient positioned on the patient head rest can view. The eye fixation components comprise a fixation target, a light source, a lens, and a mirror. Wavefront directing and analyzing components measure a wavefront emanating from the eye of a patient positioned on the patient head rest and determine aberrations of the eye that range from at least about + or - 1 diopters to at least about + or - 6 diopters. The wavefront directing and analyzing components include a lens; a mirror, a microlens array, a camera, and a data processor.

    Optimization of ablation correction of an optical system and associated methods

    公开(公告)号:AU770888B2

    公开(公告)日:2004-03-04

    申请号:AU5004801

    申请日:2001-03-22

    Applicant: ALCON INC

    Abstract: An optical correction system for correcting visual defects of an eye includes a wavefront analyzer responsive to a wavefront emanating from an eye for determining an optical path difference between a reference wave and the wavefront. A converter provides an optical correction based on the path difference and on a radially dependent ablation efficiency. The efficiency correction uses a compensating polynomial of the form A+Brho+Crho2+Drho3+ . . . +Xrhon, where rho is a normalized radius measured from a central portion of the cornea, reaching a value of 1 at an outer edge of the optical correction zone. A laser beam is directed to the cornea that has power sufficient for ablating corneal material. The optical correction is achieved by the removal of a selected amount of the corneal material to create a desired corneal shape change based on the optical correction.

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