Carl Zeiss Vision International Gmbh

Carl Zeiss Vision Ireland Ltd.

Alexander Leube

Timo Kratzer

Siegfried Wahl

Axel Kaltenbacher

Arne Ohlendorf

Nikolai Suchkov

Eric Nehrbass

Yannick Sauer

Katharina Rifai

Eberhart Zrenner

Christian Leibig

Simon Staudenmaier

Peter Essig

Katharina Breher

Manuela Weinreich

Christina Schwarz

Torsten Strasser

Dennis Thom

David Sinnott

Arne Ohlendorff

Methods and devices for measuring the vision of a person are provided The method includes determining a distance between a measurement device and the person. The distance is determined by communicating between a first wireless communication interface of the measurement device and a second wireless communication interface of a portable device on the person. Then, the vision measurement is performed based on the distance.

Method and device for measuring the vision of a person

A method, a device, and a computer program for determining a refractive error of at least one eye of a user are disclosed, as well as a method for producing a spectacles lens for the user. The method includes: displaying at least one symbol on a screen, wherein at least one parameter of the symbol displayed on the screen is changed; detecting eye movement metrics of the eye of the user according to the symbol displayed on the screen; establishing a point in time at which a recognition threshold of the user is revealed for the symbol displayed on the screen from the eye movement metrics of the eye of the user; and determining a value for the refractive error of the eye of the user from the at least one parameter established at the point in time.

Determining a refractive error of an eye

A computer-implemented method, a computer program, and a device for determining a visual performance of an eye of a person are disclosed. The method includes displaying to at least one eye of a person a visual stimulus configured to elicit at least one type of eye movement in the at least one eye of the person with at least one screen; tracking the at least one type of eye movements in the at least one eye of the person with at least one eye tracker; determining the visual performance of the at least one eye of the person by using at least one first piece of information about the at least one visual stimulus and at least one second piece of information about an occurrence of the at least one type of eye movements in the at least one eye of the person with at least one processing unit.

Method and device for determining a visual performance

A method, a computer program, and a device for determining at least one astigmatic effect of at least one eye of a person are disclosed, as well as a related method for producing at least one spectacle lens for the at least one eye of the person. The method for determining the astigmatic effect includes:

Method and device for determining at least one astigmatic effect of at least one eye

A method, a device, and a computer program product for determining a refractive error of an eye of a user are disclosed, as well as a method for producing a spectacle lens. The method for determining includes: displaying an image with a spatial modulation to the user; optionally, recording a reaction of the user to a variation of the spatial modulation over time; detecting a point in time at which a perception threshold of the user is reached; and determining the refractive error of the user from the spatial modulation, wherein the image contains a source image with several picture elements, wherein values for an image parameter are assigned to the picture elements, and wherein the spatial modulation is generated such that the values of the image parameter determine the values of a modulation parameter of the spatial modulation in the image.

Method and device for determining a refractive error

Apparatuses and methods for determining a refractive error of an eye are disclosed. A series of images of light coming from an eye are captured with varying optical powers, and the refractive error is then calculated based directly on the series of images used as approximate point spread functions. The calculation includes determining a modulation transfer area as a function of meridian angle and optical power in an angle range from 0° to 180° based on the series of images, and to calculate the refractive error based on the modulation transfer area as a function of angle and optical power.

Apparatus and method for determining the refractive error of an eye

A method, a computer program product, and a system for determining an optical parameter of an optical lens as well as a related method for producing the optical lens by adjusting the optical parameter are disclosed. The method includes: capturing an image picturing the optical lens by using a camera; and determining an optical parameter of the optical lens by processing the image, wherein the camera generates a signal related to a position of a focus, and the optical parameter of the optical lens is determined by using the signal related to the position of focus. The method and the system allow determining the optical parameter of the optical lens in a direct fashion by applying the signal related to the position of the focus as generated by the camera as a measured value for the optical parameter of the optical lens.

Method and system for determining at least one optical parameter of an optical lens

Apparatuses or methods for determining a refractive error of an eye are disclosed. An intensity of light coming from an eye is measured, using a detector device, through at least two or at least three different apertures of the aperture device. The refractive error is then calculated based on the measured intensities.

A device, a method, and a computer program for producing two point light sources of the same wavelength on a pupil plane of an eye of a user are disclosed, as well as a device, a method, and a computer program for determining a neural transfer function of the visual pathway of the user. The device for determining the neural transfer function includes a coherent light source for generating a light beam; an optical device for separating the light beam into sub-light beams, superpositioning the respective sub-light beams, and adjusting contrast and spatial phase in an interference pattern; and a beam path for guiding the superposed sub-light beams such that two point light sources of the same wavelength are produced. The devices are compact and robust, allow a variable presentation of different interference patterns, and can thus be easily operated in a commercial product in a clinical setting.

Device, method and computer program for producing two point light sources of the same wavelength on a pupil plane of an eye and for determining a neural transfer function of a visual pathway

Methods and apparatuses for joint determination of accommodation and vergence of at least one eye of a user are disclosed. The joint determination includes determining an accommodation of the eye of the user and ascertaining values for checking myopia of the eye by presenting a sign at a first distance in front of the eye to stimulate the accommodation of the eye; capturing an eye movement; ascertaining a refraction of the eye with the accommodation of the eye at the first distance; and joint determination of accommodation and vergence of the eye by ascertaining a change in the refraction of the eye with the accommodation of the eye at the first distance in relation to the accommodation of the eye at a second distance; and ascertaining the vergence of the eye from the eye movement of the eye with the accommodation of the eye at the first distance.

Joint determination of accommodation and vergence

A method, a device, and a computer program for determining at least one optical parameter of a spectacle lens, and a method for manufacturing the spectacle lens using the at least one optical parameter are disclosed. The optical parameter denotes a value for a property of the spectacle lens which is adjusted during manufacture of the spectacle lens to achieve an intended correction of ametropia of at least one eye of a user of the spectacle lens. The method includes: a) capturing at least one image of a user wearing the spectacle lens; and b) determining at least one optical parameter of the spectacle lens by image processing the at least one image, wherein the at least one image contains an eye portion including at least one eye and/or a face portion adjacent to at least one eye of a user of the spectacle lens.

Determination of at least one optical parameter of a spectacle lens

A method for optimizing an optical aid by way of automatic measurement of the subjective visual performance, a method for producing a correspondingly optimized optical aid, an apparatus for producing optical aids, a computer program having a program code for carrying out the optimization method, which program can be run on a processor, and a non-transitory storage medium comprising the computer program stored thereon are disclosed. The method for optimizing the optical aid includes the automatic determination of subjective visual acuity using machine learning.

Method for optimizing an optical aid by way of automatic subjective visual performance measurement

A device and computer program for determining the spherocylindrical refraction of an eye are disclosed. A component having adjustable optics is provided, the refractive power of which can be adjusted via a refractive power adjustment device. The spherocylindrical refraction is then determined from the adjustment of the refractive power adjustment device at different orientations of a typical direction of the optics or a typical direction of eye test characters.

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Aalen, Germany

Alexander Leube