METHOD FOR INDUCING A CONTROLLED VARIATION OF ACCOMMODATION IN AN EYE OF A SUBJECT

    公开(公告)号:CA3144897A1

    公开(公告)日:2021-01-14

    申请号:CA3144897

    申请日:2020-07-02

    Applicant: ESSILOR INT

    Abstract: The invention relates to a method for inducing a controlled variation of accommodation in an eye of a subject, using an optical system arranged in front of at least one eye of the subject and comprising the following steps: a) displaying an environmental scene (1), b) displaying, in this environmental scene (1) displayed in step a), a target (2) visible by the subject through said optical system, said target (2) being displayed in such a way that it is perceived by the subject as moving away from said subject or moving towards said subject within said environmental scene, c) having the subject observe said moving target (2) displayed in step b).

    METHOD FOR DETERMINING A VALUE OF A GLOBAL SENSITIVITY PARAMETER OF A SUBJECT, METHODS USING THIS VALUE AND SYSTEM FOR DETERMINING SAID VALUE

    公开(公告)号:CA3107059A1

    公开(公告)日:2020-01-23

    申请号:CA3107059

    申请日:2019-07-19

    Applicant: ESSILOR INT

    Abstract: The invention relates to a method for determining a value of a global sensitivity parameter (Sgsph, Sgcyl, Sgaxis, Sgasr, Sg J0, SgJ45, Soverall) of a subject, said global sensitivity parameter being relative to the sensitivity of said subject to a variation of at least a dioptric optical feature of at least an ophthalmic lens placed in front of at least one eye of said subject, comprising the following steps: a) determining (100) a single value of at least a first sensitivity parameter of said subject, relative to the sensitivity of the subject to a variation of a first dioptric optical feature of at least a first ophthalmic lens, b) determining (110) a single value of at least a second sensitivity parameter of said subject, relative to the sensitivity of the subject to a variation of a second dioptric optical feature of at least a second ophthalmic lens, each of the first and second sensitivity parameters being respectively related to the smallest variation of said first and second dioptric optical feature that may be perceived by the subject, c) using computing means to determine (120) said value of the global sensitivity parameter taking into account a combination of said single values of the first and second sensitivity parameters. It also related to methods using this value and a system for performing this method.

    METHOD FOR ALTERING THE VISUAL PERFORMANCE OF A SUBJECT, METHOD FOR MEASURING THE SPHERICAL REFRACTION CORRECTION NEED OF A SUBJECT AND OPTICAL SYSTEM FOR IMPLEMENTING THESE METHODS

    公开(公告)号:CA3090051A1

    公开(公告)日:2019-08-29

    申请号:CA3090051

    申请日:2019-02-22

    Applicant: ESSILOR INT

    Abstract: The invention relates to a method for altering the visual performance of a subject using an optical system arranged in front of at least one eye of the subject, and comprising: b) determining an optotype; c) displaying the optotype to the subject in such a way that it is visible by the subject through said optical system; d) assessing the visual performance of the subject viewing the optotype through the optical system; and e) adding a positive or negative altering value of spherical optical power to the optical system. According to the invention, the method comprises, before step b): a) choosing a target value of visual performance; and and in that, at step b), said optotype has a size which is determined depending on said target value of visual performance; - at step e), said altering value of spherical optical power is determined depending on said target value of visual performance.

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