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公开(公告)号：US12127789B2
公开(公告)日：2024-10-29
申请号：US18202725
申请日：2023-05-26
发明人： Yan Wang , Xuan Chen , Zuoping Tan , Riwei Wang
CPC分类号： A61B3/107 , A61B3/0025 , A61B3/145
摘要： The present disclosure relates to a subtle cornea deformation identification method and device based on a pixel-level corneal biomechanical parameter, including the following steps: step 1, sampling and analyzing a dynamic video of corneal stress deformation in a historical database, and calculating pixel-level data; and step 2, configuring an ensemble classifier based on a sampling result and detecting a local change in corneal biomechanics, thus identifying a subtle cornea deformation. The present disclosure has high measurement accuracy and is capable of detecting a local subtle biomechanical change.
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公开(公告)号：US12053239B2
公开(公告)日：2024-08-06
申请号：US17055455
申请日：2018-06-07
CPC分类号： A61B3/0285 , A61B3/032 , A61B3/02 , A61B3/09 , A61B3/10
摘要： A device, method and booth for automatic determination of the subjective ocular refraction of a patient. The device, which is preferably set up in a booth, has an automatic refractor, a central unit, a data input unit, an instruction-generating system controlled by the central unit and configured to generate instructions to the patient at least during an eye test, an interface system provided between the patient and the central unit and configured to detect, and to transmit directly to the central unit, indications generated in the form of gestures by the patient at least during an eye test, the central unit being configured to automatically perform at least one eye test, by controlling the automatic refractor and by receiving indications generated by the patient by way of the interface system, and to automatically determine, from these indications received, the subjective ocular refraction of the patient and/or a prescription for spectacles.
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公开(公告)号：US12048483B2
公开(公告)日：2024-07-30
申请号：US17471310
申请日：2021-09-10
发明人： Masafumi Yano
摘要： A method for manufacturing an optical device, includes obtaining a plurality of test images in each of which spectral intensities of a first color component, a second color component and a third color component are separately changeable, changing the spectral intensity of the first color component in at least a first test image, changing the spectral intensity of the second color component in at least a second test image, obtaining a spectral intensity Rs of the first color component and a spectral intensity Gs of the second color component satisfying a particular test condition when a subject is looking at the first and second test images, and manufacturing the optical device including an optical element configured to adjust spectral intensities of the first color component and the second color component, in light transmitted through the optical element, based on the spectral intensities Rs and Gs.
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公开(公告)号：US11925412B2
公开(公告)日：2024-03-12
申请号：US17333350
申请日：2021-05-28
发明人： Maria Chiara Monti
CPC分类号： A61B3/0091 , A61B3/0033 , A61B3/0041 , A61B3/113 , G02B27/0093 , G02B27/0101 , G02B27/0172 , G02B2027/0123
摘要： A head-mountable display (HMD) system includes at least one detector to detect a gaze direction of an eye of a user wearing the HMD, receiving circuitry to receive a user input from the user indicating a type of eye condition for the eye of the user associated with at least partial vision loss for a region of vision, a display unit to display one or more images to the user, and a processor to generate the one or more images for display to the user by the display unit in dependence upon the type of eye condition and an output of the at least one detector indicative of the detected gaze direction of the eye.
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公开(公告)号：US11918287B2
公开(公告)日：2024-03-05
申请号：US17863715
申请日：2022-07-13
申请人： NovaSight Ltd.
发明人： Oren Yehezkel , Dan Oz , Ran Yam
CPC分类号： A61B3/028 , A61B3/0041 , A61B3/113 , A61B3/145
摘要： Disclosed are methods and devices useful in the field of image processing and display Disclosed are also methods and devices useful in the field of ophthalmology and, in some particular embodiments, useful for the non-invasive treatment and/or prevention of refractive errors.
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公开(公告)号：US11857260B2
公开(公告)日：2024-01-02
申请号：US16649437
申请日：2018-09-19
发明人： Eliezer Glik , Sam Kavusi , Ryan Kramer , Todd Whitehurst
CPC分类号： A61B3/14 , A61B3/113 , A61B3/12 , G02F1/1334
摘要： Introduced here are retinal cameras having optical stops whose size and/or position can be modified to increase the size of the space in which an eye can move while being imaged. In some embodiments, an optical stop is mechanically moved to recover retinal image quality as the subject shifts their eye. In some embodiments, an optical stop is digitally created using a pixelated liquid crystal display (LCD) layer having multiple pixels that are individually controllably. In some embodiments, multiple non-pixelated LCD layers are connected to one another to form a variable transmission stack, and each LCD layer within the variable transmission stack may be offset from the other LCD layers. In such embodiments, the optical stop can be moved by changing which LCD layer is active at a given point in time.
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公开(公告)号：US11857254B2
公开(公告)日：2024-01-02
申请号：US17044029
申请日：2019-03-28
发明人： Rémy Allard , Daphné Silvestre
CPC分类号： A61B3/0025 , A61B3/0041 , A61B3/022 , A61B3/032 , A61B3/066 , G16H30/40 , G16H50/30
摘要： The invention relates to a method for characterizing a visual system of a subject using measures of the sensitivity to contrast, the visual system comprising visual signal processing elements each having an impact on the sensitivity to contrast, wherein a visual test where visual patterns having different spatiotemporal frequencies and with varying luminance levels and with varying levels of visual degradation of the visual patterns are shown to a subject to measure the sensitivity to contrast of said subject, is performed, wherein a predetermined response model of a visual system is preestablished on the basis of a determination of the visual signal processing element that predominantly limits the sensitivity to contrast for each value of luminance and spatiotemporal frequency, said predetermined response model relating the visual signal processing elements predominantly limiting the sensitivity to contrast to the luminances and to the spatiotemporal frequencies, wherein at least one of the visual signal processing elements is selected in order to be investigated, wherein at least one visual test is performed on the visual system of the subject, said visual test being optimized according to said at least one selected visual signal processing element, during the optimized visual test, the variations of the luminance levels and of spatiotemporal frequencies being limited within a range of luminance and a range of spatiotemporal frequency where the predetermined response model locates the visual signal processing element as predominant in limiting the sensitivity to contrast.
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公开(公告)号：US20230404389A1
公开(公告)日：2023-12-21
申请号：US18251302
申请日：2021-10-21
申请人： TOPCON CORPORATION
发明人： Satoshi NAKAMURA
CPC分类号： A61B3/10 , A61B3/0083 , A61B3/0075 , A61B3/02
摘要： The present invention comprises: an ophthalmological device 200 that is provided with a measurement unit 230; a measurement information processing unit 221 that converts measurement information, which has been obtained by the measurement unit 230, into image information and non-image information other than the image information; an ophthalmological device display unit 250 of the ophthalmological device 200 that displays the image information; a terminal device 400 that is arranged remotely from the ophthalmological device 200 and that is provided with a terminal display unit 340; a display unit imaging device 400 that is attached to the ophthalmological device 200 and that captures the entirety of the image which is displayed on the ophthalmological device display unit 250; an image transmission unit 480 that transmits, to the terminal device 300, the image which has been captured by the display unit imaging device 400; a measurement information transmission unit 222 of the ophthalmological device 200 that transmits the measurement information to the terminal device 300; and an information integration unit 321 that integrates the image information which has been transmitted from the image transmission unit 480 and the measurement information other than the image information so as to display these pieces of information on the terminal display unit 340.
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公开(公告)号：US20230316596A1
公开(公告)日：2023-10-05
申请号：US18124617
申请日：2023-03-22
CPC分类号： G06T11/001 , G06T7/90 , A61B3/022 , G06T2200/24 , G06T2207/10024 , A61B2503/12
摘要： This invention provides a system and empirical study method to quantify perceived visual contrast, particularly at supra-threshold levels in conjunction with medium to high spatial frequency stimuli, such as text and text-like design elements. And further, to use the collected study data to instruct the implementation of systems and methods to calculate a perceived lightness contrast for a given stimulus and set of colors, and to do so in a perceptually uniform manner across the visual range of available colors on a self-illuminated display or device.
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公开(公告)号：US20230301600A1
公开(公告)日：2023-09-28
申请号：US18065249
申请日：2022-12-13
CPC分类号： A61B5/7267 , A61B3/02
摘要： A computer implemented method for determining a level of certainty of a patient’s response to a stimulus perception of a subjective medical test, the method including detecting at least one physiological signal from the patient while the patient is providing a response to the stimulus perception, determining the level of certainty of a patient’s response to the stimulus perception from the at least one physiological signal, the at least one physiological signal being an input data to a machine learning model trained based on a set of training data, the set of training data comprising at least one physiological signal associated to a level of certainty of a patient’s response, the determined level of certainty being the output of the trained machine learning model.
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