Abstract: 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: a) displaying an image with a spatial modulation to the user; b) optionally, recording a reaction of the user to a variation of the spatial modulation over time; c) detecting a point in time at which a perception threshold of the user is reached; and d) 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.

Abstract: A method and a device allow to determine the contrast sensitivity threshold of the eyes of a user in an automatic manner without requiring an experienced examiner or active attention of the user. The method includes: a) providing a dataset of track data including data of eye movements, wherein the eye movements are stimulated to elicit an optokinetic nystagmus in the eyes of the user and wherein the track data are related to a particular contrast and spatial frequency of the stimulus; b) estimating at least one velocity component of the eye movement; c) comparing the velocity component with a velocity threshold; d) comparing a fraction of the track data which exceed the velocity threshold with a fractional threshold for the dataset, which is classified as eliciting the optokinetic nystagmus at the particular contrast of the stimulus; and e) determining the contrast sensitivity threshold of the eyes of the user.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A method and a device allow to determine the contrast sensitivity threshold of the eyes of a user in an automatic manner without requiring an experienced examiner or active attention of the user. The method includes: a) providing a dataset of track data including data of eye movements, wherein the eye movements are stimulated to elicit an optokinetic nystagmus in the eyes of the user and wherein the track data are related to a particular contrast and spatial frequency of the stimulus; b) estimating at least one velocity component of the eye movement; c) comparing the velocity component with a velocity threshold; d) comparing a fraction of the track data which exceed the velocity threshold with a fractional threshold for the dataset, which is classified as eliciting the optokinetic nystagmus at the particular contrast of the stimulus; and e) determining the contrast sensitivity threshold of the eyes of the user.

Abstract: A method and an apparatus for capturing a visual field of a person having a scotoma, in particular a central scotoma, are disclosed. The method includes continuously capturing the eye alignment of the person with a capturing unit, sampling the visual field of the person point-by-point to determine points suitable and not suitable for sight in the visual field of the person, finding the scotoma as a region with a multiplicity of points not suitable for sight, calculating an outer boundary line of the scotoma, calculating an outer enveloping curve, which surrounds the outer boundary line of the scotoma at a predetermined distance, and displaying the outer enveloping curve on a display unit. The enveloping curve is perceivable by the person on the display unit as a frame of the scotoma.

Abstract: 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 manufacturing a spectacle lens for the user. The method entails: displaying a periodic pattern on a screen, wherein a parameter of the periodic pattern includes at least one spatial frequency, wherein the parameter of the periodic pattern is varied; detecting a reaction of the user indicating that the user is able to perceive the periodic pattern; determining a point in time at which the user perceives the periodic pattern; and determining a value for the refractive error of the eye or eyes of the user from the periodic pattern at that point in time, wherein the value for the refractive error is determined from the at least one spatial frequency, determined at the point in time, of the periodic pattern.

Abstract: 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.

Abstract: 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.

Abstract: A method, an apparatus, and a computer program for determining a refractive error of an eye of a user are provided. The method for determining the refractive error of the eye of the user, wherein the eye of the user has a choroid, includes: ascertaining at least one value for a layer thickness of the choroid of the eye of the user over at least one region of the choroid; and determining a value for the change in the refractive error of the eye only from at least two values for the layer thickness of the choroid which were each ascertained at different times for the at least one region of the choroid, wherein the at least one region is selected from a nasal perifoveal region or a nasal parafoveal region.

Abstract: 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.

Abstract: A spectacle lens has an object-side front surface and an eye-side rear surface and is made of a base material that includes an ultraviolet (UV) absorber, which functions as a band-stop filter for UV light. In a first variant, the band-stop filter has an upper cut-off wavelength between 325 nm and 360 with a transmittance of 2% for light which is incident on the front surface, transmitted through the spectacle lens, and emerges from the rear surface for each angle of incidence between 0° and 15°. Additionally or alternatively, in a second variant, the spectacle lens has an antireflective coating with a reflectance below 5% for UV light in a wavelength range between 280 nm and a threshold wavelength, which lies between 325 nm and 350 nm, and a reflectance of 5% at the threshold wavelength for each angle of incidence between 30° and 45°.

Abstract: A method, an apparatus, and a computer program for determining a refractive error of an eye of a user are provided. The method for determining the refractive error of the eye of the user, wherein the eye of the user has a choroid, includes: ascertaining at least one value for a layer thickness of the choroid of the eye of the user over at least one region of the choroid; and determining a value for the change in the refractive error of the eye only from at least two values for the layer thickness of the choroid which were each ascertained at different times for the at least one region of the choroid, wherein the at least one region is selected from a nasal perifoveal region or a nasal parafoveal region.

Abstract: 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.

Abstract: A component for a mobile computer device, such as a smartphone, can be secured to the housing of the mobile computer device. The component can deflect the light of a built-in light source of the mobile computer device with an optical element and optionally filter the same, or can provide its own light source to improve the option of measuring eccentric photorefraction using the mobile computer device.

Abstract: A component for a mobile computer device, such as a smartphone, can be secured to the housing of the mobile computer device. The component can deflect the light of a built-in light source of the mobile computer device with an optical element and optionally filter the same, or can provide its own light source to improve the option of measuring eccentric photorefraction using the mobile computer device.

Abstract: A component for a mobile computer device, such as a smartphone, can be secured to the housing of the mobile computer device. The component can deflect the light of a built-in light source of the mobile computer device with an optical element and optionally filter the same, or can provide its own light source to improve the option of measuring eccentric photorefraction using the mobile computer device.

Abstract: A method and an apparatus for capturing a visual field of a person having a scotoma, in particular a central scotoma, are disclosed. The method includes continuously capturing the eye alignment of the person with a capturing unit, sampling the visual field of the person point-by-point to determine points suitable and not suitable for sight in the visual field of the person, finding the scotoma as a region with a multiplicity of points not suitable for sight, calculating an outer boundary line of the scotoma, calculating an outer enveloping curve, which surrounds the outer boundary line of the scotoma at a predetermined distance, and displaying the outer enveloping curve on a display unit. The enveloping curve is perceivable by the person on the display unit as a frame of the scotoma.

Abstract: An apparatus for assisting in establishing a correction for correcting heterotropia or heterophoria is disclosed. The apparatus tests a prescription for correcting the heterotropia or heterophoria before the prescription is actually realized. The apparatus includes a simulation device with an input interface, a generator unit, and a viewing device. The input interface receives diagnostic data, classification data, and magnitude data concerning the heterotropia or heterophoria, and prescription data indicating a suitable prism. The generator unit generates a right simulation image for the right eye and a left simulation image for the left eye, wherein the right and left simulation images each represent the same object or scene looked at by the respective viewing angles of the eyes. The viewing device has separate displays or display sections for displaying the simulation image to the right eye and the left eye of the patient.