1. Articles from jay wei

    1-24 of 30 1 2 »
    1. Methods and apparatus for retina blood vessel assessment with OCT angiography

      Methods and apparatus for retina blood vessel assessment with OCT angiography

      A method of processing a 3D OCT dataset is present. A method according to some embodiments of the present invention includes obtaining an OCT data from the 3D OCT dataset; obtaining an OCTA data from the 3D OCT dataset; performing segmentation for at least one boundary on the OCT data; processing the OCTA data in a region of interest to create at least one image representation by assigning a value to each pixel of each of the image representation; and displaying at least one image representation.

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    2. Methods and apparatus for reducing artifacts in OCT angiography using machine learning techniques

      Methods and apparatus for reducing artifacts in OCT angiography using machine learning techniques

      In some embodiments of the present invention, a method of reducing artifacts includes obtaining OCT/OCTA data from an OCT/OCTA imager; preprocessing OCTA/OCT volume data; extracting features from the preprocessed OCTA/OCT volume data; classifying the OCTA/OCT volume data to provide a probability determination data; determining a percentage data from the probability data determination; and reducing artifacts in response to the percentage data.

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    3. Motion correction and normalization of features in optical coherence tomography

      Motion correction and normalization of features in optical coherence tomography

      An optical coherence tomography system is provided. The system includes an OCT imager; a two-dimensional transverse scanner coupled to the OCT imager, the two-dimensional transverse scanner receiving light from the light source and coupling reflected light from a sample into the OCT imager; a computer coupled to receive 3D OCT data from the OCT imager, the computer further processes the 3D OCT data; wherein the processing the 3D OCT data includes: correcting motion artifacts in baseline mode; generating reference data in baseline mode; performing segmentation to identify volumes of interest; extracting feature information, the feature information including reflectivity, texture, or ...

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      Mentions: Optovue Jay Wei
    4. Method and apparatus for enhanced eye measurements

      Method and apparatus for enhanced eye measurements

      An imaging method according to some embodiments of the present invention includes obtaining working distance information from an optical coherence tomography system, the working distance being the working distance to the sample; obtaining information from one or more ocular systems; combining the information from said optical coherence tomography information and said ocular system; and displaying said combined information.

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      Mentions: Optovue Jay Wei
    5. Enhanced biometry using optical coherence tomography

      Enhanced biometry using optical coherence tomography

      An imaging method is disclosed. An imaging method according to some embodiments can include obtaining a plurality of measurements of an eye for at least one location by scanning optical radiation across the eye; determining a preferred measurement axis from the plurality of measurements; and processing the plurality of measurements to obtain information of the eye.

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    6. Enhanced Biometry Using Optical Coherence Tomography

      Enhanced Biometry Using Optical Coherence Tomography

      An imaging method is disclosed. An imaging method according to some embodiments can include obtaining a plurality of measurements of an eye for at least one location by scanning optical radiation across the eye; determining a preferred measurement axis from the plurality of measurements; and processing the plurality of measurements to obtain information of the eye.

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    7. Method And Apparatus For Enhanced Eye Measurement

      Method And Apparatus For Enhanced Eye Measurement

      An imaging method according to some embodiments of the present invention includes obtaining working distance information from an optical coherence tomography system, the working distance being the working distance to the sample; obtaining information from one or more ocular systems; combining the information from said optical coherence tomography information and said ocular system; and displaying said combined information.

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      Mentions: Optovue Jay Wei
    8. Motion Correction And Normalization Of Features In Optical Coherence Tomography

      Motion Correction And Normalization Of Features In Optical Coherence Tomography

      An optical coherence tomography system is provided. The system includes an OCT imager; a two-dimensional transverse scanner coupled to the OCT imager, the two-dimensional transverse scanner receiving light from the light source and coupling reflected light from a sample into the OCT imager; a computer coupled to receive 3D OCT data from the OCT imager, the computer further processes the 3D OCT data; wherein the processing the 3D OCT data includes: correcting motion artifacts in baseline mode; generating reference data in baseline mode; performing segmentation to identify volumes of interest; extracting feature information, the feature information including reflectivity, texture, or ...

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      Mentions: Optovue Jay Wei
    9. Computer-Aided Diagnosis Of Retinal Pathologies Using Frontal En-Face Views Of Optical Coherence Tomography

      Computer-Aided Diagnosis Of Retinal Pathologies Using Frontal En-Face Views Of Optical Coherence Tomography

      A system and methods of computer-aided diagnosis for ophthalmology are described that includes acquiring OCT data, determining an RPE fit from the OCT data, and displaying en face images based on the RPE fit. (FR)L'invention concerne un système et des procédés de diagnostic assisté par ordinateur pour l'ophtalmologie, notamment un procédé comportant les étapes consistant à acquérir des données de TCO, déterminer un ajustement d'épithélium pigmentaire rétinien (RPE) à partir des données de TCO et afficher des images en face basées sur l'ajustement RPE.

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    10. Method of eye registration for optical coherence tomography

      Method of eye registration for optical coherence tomography

      A method is disclosed for use in eye registrations and examinations, some embodiments of the method including acquiring scan pattern scans; forming images from the scans; registering the images; generating a feature map from the scan pattern scans; identifying features on the feature map; and recording positional information of features.

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      Mentions: Optovue Jay Wei
    11. Scanning And Processing Using Optical Coherence Tomography

      Scanning And Processing Using Optical Coherence Tomography

      In accordance with some embodiments, a method of eye examination includes acquiring OCT data with a scan pattern centered on an eye cornea that includes n radial scans repeated r times, c circular scans repeated r times, and n* raster scans where the scan pattern is repeated m times, where each scan includes a A-scans, and where n is an integer that is 0 or greater, r is an integer that is 1 or greater, c is an integer that is 0 or greater, n* is an integer that is 0 or greater, m is an integer that is 1 ...

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    12. Method of eye examination by optical coherence tomography

      Method of eye examination by optical coherence tomography
      A method of performing an OCT image scan is presented. Other images are taken and a template is formed to correct the OCT images, for example, for eye motion, blood vessel placement, and center offset. In some embodiments, video images are taken simultaneously with the OCT images and utilized to correct the OCT images. In some embodiments, a template OCT image is formed prior to acquisition of the OCT images and the template OCT image is utilized as a template from which to correct all of the OCT images.
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    13. Optical apparatus and methods for performing eye examinations

      An eye examination system is presented that obtains several parameters of the eye. A system according to some embodiments of the present invention include a keratometry system, a low coherence reflectometry system, and a low coherence interferometry system co-coupled to the eye. In some embodiments, the low coherence interferometry system can provide interferometric tomography data. A processor can be coupled to receive data from the keratometry system, the low coherence reflectometry system, and the low coherence interferometry system and calculate at least one parameter of the eye from that data.
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    14. Method Of Eye Registration For Optical Coherence Tomography (Wo 2009/128912)

      Method Of Eye Registration For Optical Coherence Tomography (Wo 2009/128912)
      A method is disclosed for use in eye registrations and examinations, some embodiments of the method including acquiring scan pattern scans; forming images from the scans; registering the images; generating a feature map from the scan pattern scans; identifying features on the feature map; and recording positional information of features.
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      Mentions: Optovue Jay Wei
    15. Fourier-domain optical coherence tomography imager

      A Fourier-domain optical coherence tomography (OCT) imager is presented. An OCT imager according to the present invention can have an auto-alignment process. The auto-alignment process automatically adjusts at least one optical component of a spectrometer of the imager so that the spectrometer is aligned during an imaging session. In addition to the auto-alignment process, OCT spectra are normalized for background spectra and for noise characteristics in order to provide a more accurate and clear OCT image.
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      Mentions: Optovue Jay Wei
    16. High efficiency low coherence interferometry

      In accordance with the present invention, embodiments of interferometers are presented that improves both the polarization dependency problem and helps prevents light from being reflected back into the light source, among other things. Interferometer embodiments can include an isolator coupled to a light source and polarization dependent optics coupled with the isolator to provide light to a reference arm and a sample arm, wherein reflected light provided to optical detectors is such that a polarization independent optical signal can be formed in an optical signal processor coupled to the optical detectors, and the isolator blocks reflected light from the reference ...
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      Mentions: Optovue Jay Wei
    17. Optical apparatus and method for comprehensive eye diagnosis

      An eye examination instrument is presented that can perform multiple eye tests. The instrument includes an illumination optical path and an imaging optical path, wherein a focus element in the illumination optical path is mechanically coupled to a focus element in the imaging optical path. In some embodiments, the eye examination instrument can perform a visual eye test, a fundus imaging test, and an optical coherence tomography test.
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      Mentions: Optovue Jay Wei Nidek
    18. Tracking assisted optical procedure

      One embodiment of the present invention is an optical coherence tomography ("OCT") application apparatus that performs an OCT application on an object. The OCT application apparatus includes: (a) an OCT scanning apparatus which outputs a scanning beam of OCT scanning radiation; and (b) an active tracking system that generates and scans a tracking beam of tracking radiation in a predetermined pattern over a region; wherein the active tracking system includes an analysis system that: (i) when the object is at a calibration position, scans the tracking beam about an irregular reference tracking feature in the region, and detects a calibration ...
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    19. Tracking assisted optical coherence tomography

      One embodiment of the present invention is an optical coherence tomography ("OCT") application apparatus that performs an OCT application on an object. The OCT application apparatus includes: (a) an OCT scanning apparatus which outputs a scanning beam of OCT scanning radiation; and (b) an active tracking system that generates and projects a tracking beam of tracking radiation onto a region including a reference tracking feature; wherein the active tracking system further includes an analysis system that analyzes tracking radiation reflected from the region to detect movement of the object and to generate tracking signals, and applies the tracking signals (i ...
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    20. Optical delay line

      One embodiment of the present invention is an optical delay line that comprises a plurality of optical elements in optical communication with each other, wherein: (a) at least one of the plurality of optical elements is capable of spatially dispersing a spectrum of an optical signal to provide a spatially dispersed optical signal; (b) at least one of the plurality of optical elements is adjustable to affect one or more of a phase delay and a group delay of an optical signal; and (c) at least one of the plurality of optical elements compensates for polarization introduced into the optical ...
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    21. Retinal tracking assisted optical coherence tomography

      One embodiment of the present invention is an optical coherence tomography ("OCT") application apparatus that performs an OCT application on an object. The OCT application apparatus includes: (a) an OCT scanning apparatus which outputs a beam of OCT scanning radiation; (b) an active tracking system that generates and projects a beam of tracking radiation onto a region including a reference tracking feature, which active tracking system includes a tracking optical system that is disposed to intercept the beam of tracking radiation and the beam of OCT scanning radiation; and (c) wherein the active tracking system analyzes tracking radiation reflected from ...
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    22. Method and apparatus for diagnosing and monitoring eye disease

      Embodiments of the present invention provide method and apparatus for diagnosing and monitoring eye disease such as, for example, glaucoma. In particular, embodiments of the present invention analyze OCT scans of a retina to determine one or more of the following measures for diagnosing and monitoring glaucomatous retinal nerve fiber layer ("NFL") change: an NFL thickness; a ratio of NFL thickness in a vertical quadrant (superior and inferior quadrants in an OCT scan are combined in a vertical average) and a horizontal quadrant (nasal and temporal quadrants in the OCT scan are combined in a horizontal average); and an NFL ...
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    23. Optical coherence tomography with new interferometer

      Embodiments of the present invention are method and apparatus for simply and economically providing efficient scanning in an optical coherence tomography ("OCT") apparatus. In particular, an embodiment of the present invention is an OCT apparatus which examines an object, which OCT apparatus comprises: (a) a source of short coherence radiation; (b) a coupler which (i) couples a first portion of the radiation to a reference arm; (ii) couples a second portion of the radiation to a sample arm; (iii) combines radiation transmitted thereto from the reference path and the sample path; and (iv) couples the combined radiation to an analyzer ...
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    1-24 of 30 1 2 »
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  2. Topics in the News

    1. (30 articles) Jay Wei
    2. (16 articles) Optovue
    3. (14 articles) Carl Zeiss Meditec
    4. (5 articles) Thomas Hellmuth
    5. (4 articles) David Huang
    6. (3 articles) Michael R. Hee
    7. (3 articles) Tony H. Ko
    8. (2 articles) Center for Ophthalmic Optics and Lasers
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    10. (1 articles) Nidek
    11. (1 articles) University of Pittsburgh
    12. (1 articles) ESPCI ParisTech
    13. (1 articles) University of Toronto
    14. (1 articles) Felix I. Feldchtein
    15. (1 articles) Mathias Fink
    16. (1 articles) Claude Boccara
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    Method of eye examination by optical coherence tomography Scanning And Processing Using Optical Coherence Tomography Enhanced Biometry Using Optical Coherence Tomography Changes in the OCT angiographic appearance of type 1 and type 2 CNV in exudative AMD during anti-VEGF treatment Optical coherence angiography for pre-treatment assessment and treatment monitoring following photodynamic therapy: a basal cell carcinoma patient study Computational aberration correction in spatiotemporal optical coherence (STOC) imaging A rare entity: Sympathetic ophthalmia presumably after blunt trauma to the phthisical eye and optical coherence tomography angiography metrics to monitor response to treatment Mechanism of fluid leak in non-traumatic corneal perforations: an anterior segment optical coherence tomography study Repeatability of ocular surface vessel density measurements with optical coherence tomography angiography Spatiotemporal dynamics of pial collateral blood flow following permanent middle cerebral artery occlusion in a rat model of sensory-based protection: a Doppler optical coherence tomography study Cascaded Deep Neural Networks for Retinal Layer Segmentation of Optical Coherence Tomography with Fluid Presence Sample Size Requirements of Glaucoma Clinical Trials When Using Combined Optical Coherence Tomography and Visual Field Endpoints