1. Measuring Corneal Astigmatism Using Optical Coherence Tomography in Keratoconus

      Explore LWW Online Ophthalmology
      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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      Mentions: Visionix Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    3. Postdoctoral Research Fellowship in Anterior Eye OCT Image Processing and Machine Learning at Oregon Health & Science University.

      Explore Optical Coherence Tomography News Ophthalmology , Jobs & Studentships
      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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      Mentions: Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    4. Differentiating Between Contact Lens Warpage and Keratoconus Using OCT Maps of Corneal Mean Curvature and Epithelial Thickness

      Explore journals.healio.com Ophthalmology
      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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      Mentions: Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    5. Peripheral OCT Assisted by Scleral Depression in Retinopathy of Prematurity

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      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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      Mentions: Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    7. High speed, long range, deep penetration swept source OCT for structural and angiographic imaging of the anterior eye

      Explore Nature Publishing Group Ophthalmology
      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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      Mentions: Massachusetts Institute of Technology Thorlabs Oregon Health & Science University

    9. Prospective evaluation of optical coherence tomography for disease detection in the Casey mobile eye clinic

      Explore SAGE Journals Ophthalmology
      Prospective evaluation of optical coherence tomography for disease detection in the Casey mobile eye clinic
      This study was designed to evaluate iVue Spectral-domain optical coherence tomography (SD-OCT) effectiveness in screening for eye disease compared to clinical examination. Subjects were recruited from the Casey Eye Community Outreach Program Mobile Clinic during its routinely scheduled outreach clinics to indigent, underserved populations throughout Oregon. Macular optical coherence tomography interpretation and automated optical coherence tomography analysis were compared to the clinical examination, with specific attention to findings indicative of ...
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      Mentions: Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    10. Oregon Health and Science University Receives NIH Grant for OCT Angiography for Neovascular Age-related Macular Degeneration

      Explore Optical Coherence Tomography News Ophthalmology , Funding
      Oregon Health and Science University Receives NIH Grant for OCT Angiography for Neovascular Age-related Macular Degeneration
      ...cular AMD. OCTA is nearing its potential to replace the need for invasive FA.

      Oregon Health and Science University Receives a 2021 NIH Grant for $471,602 for OCT Angiography for Neovascula...

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      Mentions: National Institutes of Health Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    11. Optical coherence tomographic angiography study of perfusion recovery after surgical lowering of intraocular pressure

      Explore Nature Publishing Group Ophthalmology
      Optical coherence tomographic angiography study of perfusion recovery after surgical lowering of intraocular pressure
      We investigated the time and location of retinal perfusion recovery after surgical intraocular pressure (IOP) lowering in glaucoma by using optical coherent tomography angiography (OCTA). Seventeen patients were analyzed. The 4.54.5-mm OCTA scans centered on the disc were performed preoperatively and postoperatively at 6 weeks, 3 months, and 6 months. The peripapillary retinal nerve fiber layer (NFL) thickness, NFL plexus capillary density (NFLP-CD) and visual field (VF) were ...
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      Mentions: Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    12. Normative intercapillary distance and vessel density data in the temporal retina assessed by wide-field spectral-domain optical coherence tomography angiography

      Explore SAGE Journals Ophthalmology
      Normative intercapillary distance and vessel density data in the temporal retina assessed by wide-field spectral-domain optical coherence tomography angiography
      A limitation of conventional optical coherence tomography angiography (OCTA) is the limited field of view normally used in data acquisition. As the technology improves, larger fields of view that capture information away from the macular are being explored in order to provide an enhanced ability to detect pathology. However, normative measurements for important OCTA metrics like vessel density and intercapillary distance are not currently well-characterized in the peripheral retina. In ...
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      Mentions: Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    13. Accuracy of OCT-derived net corneal astigmatism measurement

      Explore LWW Online Ophthalmology
      Accuracy of OCT-derived net corneal astigmatism measurement
      Purpose: To assess the repeatability and accuracy of corneal astigmatism measurement with a spectral-domain optical coherence tomography (OCT) system (Avanti, Optovue) and compare them with Scheimpflug imaging (Pentacam HR, Oculus) and swept-source optical biometry (IOLMaster 700, Carl Zeiss Mediatec AG). Setting: Casey Eye Institute, Oregon Health Science University, Portland, Oregon, USA. Design: Prospective cross-sectional observational study. Methods: Sixty pseudophakic eyes with monofocal non-toric intraocular lens that previously had refractive surgery ...
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      Mentions: Visionix Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    14. Effect of algorithms and covariates in glaucoma diagnosis with optical coherence tomography angiography

      Explore BJO Online Ophthalmology
      Effect of algorithms and covariates in glaucoma diagnosis with optical coherence tomography angiography
      Purpose: To assess the effects of algorithms and covariates in glaucoma diagnosis with optical coherence tomography angiography (OCTA). Methods: In this prospective cross-sectional study, one eye each of 36 normal controls and 64 patients with glaucoma underwent 4.5 mm disc-centred and 6 mm macula-centred OCTA scans. The peripapillary nerve fibre layer plexus capillary density (NFLP-CD) and macular superficial vascular complex vessel density (SVC-VD) were measured using both a commercial ...
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      Mentions: Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    15. Oregon Health and Science University Receives NIH Grant for Optical Coherence Tomography-Aided Differential Diagnosis and Treatment of Irregular Corneas

      Explore Optical Coherence Tomography News Ophthalmology , Funding
      Oregon Health and Science University Receives NIH Grant for Optical Coherence Tomography-Aided Differential Diagnosis and Treatment of Irregular Corneas
      ...OCT-and-topography guided PTK for patients with corneal scars, stromal dystrophies, and other irregularities. Oregon Health and Science University Receives a 2021 NIH Grant for $373,450 for Optical Coherence Tomography-A...
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      Mentions: National Institutes of Health Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    16. DcardNet: Diabetic Retinopathy Classification at Multiple Levels Based on Structural and Angiographic Optical Coherence Tomography

      Explore IEEE Xplore Ophthalmology
      DcardNet: Diabetic Retinopathy Classification at Multiple Levels Based on Structural and Angiographic Optical Coherence Tomography
      Objective: Optical coherence tomography (OCT) and its angiography (OCTA) have several advantages for the early detection and diagnosis of diabetic retinopathy (DR). However, automated, complete DR classification frameworks based on both OCT and OCTA data have not been proposed. In this study, a convolutional neural network (CNN) based method is proposed to fulfill a DR classification framework using en face OCT and OCTA.
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      Mentions: Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    17. High-speed and widefield handheld swept-source OCT angiography with a VCSEL light source

      Explore OSA | OSA Publishing Ophthalmology , Probes
      High-speed and widefield handheld swept-source OCT angiography with a VCSEL light source
      Optical coherence tomography (OCT) and OCT angiography (OCTA) enable noninvasive structural and angiographic imaging of the eye. Portable handheld OCT/OCTA systems are required for imaging patients in the supine position. Examples include infants in the neonatal intensive care unit (NICU) and operating room (OR). The speed of image acquisition plays a pivotal role in acquiring high-quality OCT/OCTA images, particularly with the handheld system, since both the operator hand ...
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      Mentions: National Institutes of Health Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    18. OHSU Receives NIH Grant for Artificial Intelligence Assisted Panoramic Optical Coherence Tomography Angiography for Retinopathy of Prematurity

      Explore Optical Coherence Tomography News Ophthalmology , Funding
      OHSU Receives NIH Grant for Artificial Intelligence Assisted Panoramic Optical Coherence Tomography Angiography for Retinopathy of Prematurity
      ...ad to earlier intervention and improved outcomes in patients with severe ROP.

      Oregon Health and Science University Receives a 2021 NIH Grant for $377,300 for Artificial Intelligence Assist...

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      Mentions: National Institutes of Health Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    19. Phase-stabilized complex-decorrelation angiography

      Explore OSA | OSA Publishing
      Phase-stabilized complex-decorrelation angiography
      In this study, we developed a novel phase-stabilized complex-decorrelation (PSCD) optical coherence tomography (OCT) angiography (OCTA) method that can generate high quality OCTA images. This method has been validated using three different types of OCT systems and compared with conventional complex- and amplitude-based OCTA algorithms. Our results suggest that in combination with a pre-processing phase stabilization method, the PSCD method is insensitive to bulk motion phase shifts, less dependent on ...
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      Mentions: Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    20. Comparison of Central Macular Fluid Volume With Central Subfield Thickness in Patients With Diabetic Macular Edema Using Optical Coherence Tomography Angiography

      Explore The JAMA Network Ophthalmology
      Comparison of Central Macular Fluid Volume With Central Subfield Thickness in Patients With Diabetic Macular Edema Using Optical Coherence Tomography Angiography
      Importance: Diabetic macular edema (DME) is the predominant cause of visual impairment in patients with type 1 or 2 diabetes. Automated fluid volume measurements using optical coherence tomography (OCT) may improve the diagnostic accuracy of DME screening. Objective: To assess the diagnostic accuracy of an automated central macular fluid volume (CMFV) quantification using OCT for DME. Design, setting, and participants: A cross-sectional observational study was conducted at a tertiary academic ...
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      Mentions: Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    21. Postdoctoral Research Fellowship position in the Center for Ophthalmic Optics and Lasers, Casey Eye Institute, Oregon Health & Science University

      Explore Optical Coherence Tomography News Jobs & Studentships
      Postdoctoral Research Fellowship position in the Center for Ophthalmic Optics and Lasers, Casey Eye Institute, Oregon Health & Science University
      ...tlab/R programming for data analysis. Please Contact Dr. Ou Tan ( tano@ohsu.edu ) and Dr. David Huang (huangd@ohsu.edu) for details. Applications, including a current CV, and contact details for two referees, should be s...
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      Mentions: Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    23. Oregon Science and Health University Receives NIH Grant for Applications of Ultrahigh-Speed Long-Range Wide-Field OCT in Anterior Eye Diseases

      Explore Optical Coherence Tomography News Ophthalmology , Funding
      Oregon Science and Health University Receives NIH Grant for Applications of Ultrahigh-Speed Long-Range Wide-Field OCT in Anterior Eye Diseases
      Oregon Science and Health University Receives a 2021 NIH Grant for $440,684 for Applications of Ultrahigh-Speed Long-Range Wide-Field OCT in Anterior Eye Diseases. The principal investigator is David Huang. Below is a summary of the proposed work. Optical coherence tomography (OCT) is uniquely able to achieve micron depth resolution while imaging a large 3-dimensional (3D) volume. This enables 3D imaging and precise measurements in the anterior segment of the ...
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      Mentions: National Institutes of Health Oregon Health & Science University Center for Ophthalmic Optics and Lasers

    24. Plexus-specific retinal capillary avascular area in exudative age-related macular degeneration with projection-resolved OCT angiography

      Explore BJO Online Ophthalmology
      Plexus-specific retinal capillary avascular area in exudative age-related macular degeneration with projection-resolved OCT angiography
      Objective To detect the plexus-specific retinal capillary avascular area in exudative age-related macular degeneration (EAMD) with projection-resolved optical coherence tomography angiography (PR-OCTA). Methods and analysis In this prospective cross-sectional single centre study, eyes with treatment-nave EAMD underwent macular 33mm OCTA with AngioVue system. OCTA scans were analysed and processed including three-dimensional projection artefact removal, retinal layer semi-automated segmentation and en face angiogram generation. Automated quantification of extrafoveal (excluding the central ...
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      Mentions: Oregon Health & Science University Center for Ophthalmic Optics and Lasers
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