1. Oregon Health & Science University

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    1. Mentioned In 511 Articles

    2. Measuring Corneal Astigmatism Using Optical Coherence Tomography in Keratoconus

      Measuring Corneal Astigmatism Using Optical Coherence Tomography in Keratoconus
      Purpose: To measure net corneal astigmatism using optical coherence tomography (OCT, Avanti, Optovue) in individuals with keratoconus and compare its repeatability and accuracy with those obtained using Scheimpflug imaging (Pentacam HR, Oculus). Setting: Casey Eye Institute, Portland, Oregon, USA. Design: Prospective cross-sectional observational study. Methods: Net corneal astigmatism was calculated in keratoconic and normal eyes with OCT and Scheimpflug imaging using four settings - pupil or vertex centration settings with a ...
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    3. Oregon Health & Science University Receives NIH Grant for Artificial intelligence assisted panoramic Optical Coherence Tomography Angiography for Retinopathy of Prematurity

      Oregon Health & Science University Receives NIH Grant for Artificial intelligence assisted panoramic Optical Coherence Tomography Angiography for Retinopathy of Prematurity
      Oregon Health Science University Received a 2022 NIH Grant for $377,300 for Artificial intelligence assisted panoramic Optical Coherence Tomography Angiography for Retinopathy of Prematurity. The principal investigator is Yifan Jian. Below is a summary of the proposed work. The long-term goal of this project is to determine whether optical coherence tomography (OCT) and OCT angiography (OCTA) might lead more accurate and objective diagnosis, earlier intervention, and improved outcomes in ...
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    4. Oregon Health & Science University Receives NIH Grant for Optical Coherence Tomography-Aided Differential Diagnosis and Treatment of Irregular Corneas

      Oregon Health & Science University Receives NIH Grant for Optical Coherence Tomography-Aided Differential Diagnosis and Treatment of Irregular Corneas
      Oregon Health Science University Received a 2022 NIH Grant for $373,450 for Optical Coherence Tomography-Aided Differential Diagnosis and Treatment of Irregular Corneas. The principal investigator is Yan Li. Below is a summary of the proposed work. To see well, the cornea must maintain near perfect clarity and shape. Several disease processes can distort corneal shape and degrade vision. These include ectasia/keratoconus (stromal thinning and bulging), primary epithelial deformation ...
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    5. Postdoctoral Research Fellowship in Anterior Eye OCT Image Processing and Machine Learning at Oregon Health & Science University.

      Postdoctoral Research Fellowship in Anterior Eye OCT Image Processing and Machine Learning at Oregon Health & Science University.
      ...b/Python programming for data analysis. Please Contact Dr. Yan Li (liyan@ohsu.edu) or Dr. David Huang (huangd@ohsu.edu) for details. Applications should include a CV, and contact information of two referees. The COOL La...
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    6. Differentiating Between Contact Lens Warpage and Keratoconus Using OCT Maps of Corneal Mean Curvature and Epithelial Thickness

      Differentiating Between Contact Lens Warpage and Keratoconus Using OCT Maps of Corneal Mean Curvature and Epithelial Thickness
      Purpose: To formulate an Epithelial Modulation index to differentiate between eyes with contact lens warpage and keratoconus. Methods: Normal eyes and eyes with either contact lens warpage or keratoconus were scanned by a Fourier-domain optical coherence tomography (OCT) system. Maps of epithelial thickness and anterior surface mean curvature were generated and converted to deviation maps by subtracting the average maps from a healthy population. The Epithelial Modulation index was defined ...
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    7. Peripheral OCT Assisted by Scleral Depression in Retinopathy of Prematurity

      Peripheral OCT Assisted by Scleral Depression in Retinopathy of Prematurity
      Objective: To determine whether handheld widefield optical coherence tomography (OCT) can be used to document retinopathy of prematurity (ROP) stage while using scleral depression to improve peripheral views. Design: Prospective observational study. Participants: Consecutive neonates admitted to the neonatal intensive care unit (NICU) in a single academic medical center who also met criteria for ROP screening and consented for research imaging. Methods: Scleral depression was combined with widefield OCT using ...
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    8. High speed, long range, deep penetration swept source OCT for structural and angiographic imaging of the anterior eye

      High speed, long range, deep penetration swept source OCT for structural and angiographic imaging of the anterior eye
      This study reports the development of prototype swept-source optical coherence tomography (SS-OCT) technology for imaging the anterior eye. Advances in vertical-cavity surface-emitting laser (VCSEL) light sources, signal processing, optics and mechanical designs, enable a unique combination of high speed, long range, and deep penetration that addresses the challenges of anterior eye imaging. We demonstrate SS-OCT with a 325 kHz A-scan rate, 12.2 m axial resolution (in air), and 15 ...
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    9. In Vivo Sublayer Analysis of Human Retinal Inner Plexiform Layer Obtained by Visible-Light Optical Coherence Tomography

      In Vivo Sublayer Analysis of Human Retinal Inner Plexiform Layer Obtained by Visible-Light Optical Coherence Tomography
      Purpose : Growing evidence suggests that dendrite retraction or degeneration in a subpopulation of the retinal ganglion cells (RGCs) may precede detectable soma abnormalities and RGC death in glaucoma. Visualization of the lamellar structure of the inner plexiform layer (IPL) could advance clinical management and fundamental understanding of glaucoma. We investigated whether visible-light optical coherence tomography (vis-OCT) could detect the difference in the IPL sublayer thicknesses between small cohorts of healthy ...
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    10. An outer hair cell-powered global hydromechanical mechanism for cochlear amplification

      An outer hair cell-powered global hydromechanical mechanism for cochlear amplification
      It is a common belief that the mammalian cochlea achieves its exquisite sensitivity, frequency selectivity, and dynamic range through an outer hair cell-based active process, or cochlear amplification. As a sound-induced traveling wave propagates from the cochlear base toward the apex, outer hair cells at a narrow region amplify the low level sound-induced vibration through a local feedback mechanism. This widely accepted theory has been tested by measuring sound-induced sub-nanometer ...
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    11. 105° field of view non-contact handheld swept-source optical coherence tomography

      105° field of view non-contact handheld swept-source optical coherence tomography
      We demonstrate a handheld swept-source optical coherence tomography (OCT) system with a 400 kHz vertical-cavity surface-emitting laser (VCSEL) light source, a non-contact approach, and an unprecedented single shot 105 field of view (FOV). We also implemented a spiral scanning pattern allowing real-time visualization with improved scanning efficiency. To the best of our knowledge, this is the widest FOV achieved in a portable non-contact OCT retinal imaging system to date. Improvements ...
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    12. 1-15 of 511 1 2 3 4 ... 32 33 34 »
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  2. About Oregon Health & Science University

    Oregon Health & Science University

    Oregon Health & Science University (OHSU) is a public university in Oregon with a main campus, including three hospitals, in Portland and a smaller campus in Hillsboro. It was formed in 1974 as the University of Oregon Health Sciences Center, combining state dentistry, medicine, and nursing programs into a single center. It was renamed Oregon Health Sciences University in 1981 and took its current name in 2001, as part of a merger with the Oregon Graduate Institute of Science and Technology (OGI) in Hillsboro. In addition, the university has several partnership programs including a joint PharmD Pharmacy program with Oregon State University.