1. Articles mentioning both Yan Li and Maolong Tang

    1-16 of 16
    1. Methods and systems to measure corneal epithelial thickness and power, stromal thickness, subepithelial corneal power and topography for disease diagnosis

      Methods and systems to measure corneal epithelial thickness and power, stromal thickness, subepithelial corneal power and topography for disease diagnosis
      This invention discloses methods and systems for measuring corneal epithelial thickness and power, stromal thickness, subepitheila corneal power and topography. The systems and methods disclosed herein are non-invasive, non-contact and automated imaging methods which preferably makes use of Fourier-domain optical tomography. Also disclosed herein are scanning patterns and image analysis methods for utilizing and analyzing Fourier-domain optical coherence tomography images to obtain information about conical epithelial and stromal properties as ...
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    2. Distinguishing between contact lens warpage and ectasia: Usefulness of optical coherence tomography epithelial thickness mapping

      Distinguishing between contact lens warpage and ectasia: Usefulness of optical coherence tomography epithelial thickness mapping
      Purpose To distinguish between corneal ectasia and contact lensrelated warpage by characteristic patterns on corneal topography and optical coherence tomography (OCT) epithelial thickness maps. Setting Casey Eye Institute, Portland, Oregon, USA. Design Prospective and retrospective case series. Methods Axial and mean power maps were obtained on corneal topography systems. Epithelial thickness maps were generated using RTVue OCT. A sector divider was applied to all maps. The locations of the minimum ...
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    3. Imaging the anterior eye with dynamic-focus swept-source optical coherence tomography.

      Imaging the anterior eye with dynamic-focus swept-source optical coherence tomography.
      A custom-built dynamic-focus swept-source optical coherence tomography (SS-OCT) system with a central wavelength of 1310 nm was used to image the anterior eye from the cornea to the lens. An electrically tunable lens was utilized to dynamically control the positions of focusing planes over the imaging range of 10 mm. The B-scan images were acquired consecutively at the same position but with different focus settings. The B-scan images were then ...
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    4. Corneal Epithelial Remodeling after LASIK Measured by Fourier-Domain Optical Coherence Tomography

      Corneal Epithelial Remodeling after LASIK Measured by Fourier-Domain Optical Coherence Tomography
      Purpose . To quantify corneal epithelial thickness changes after myopic LASIK by OCT. Methods. Epithelial thickness before and after myopic LASIK were measured by a Fourier-domain OCT system. Average central (within 1mm diameter) and paracentral epithelial thickness (5~6mm diameter) before and after LASIK were compared. Correlation between central epithelial thickness change and laser spherical equivalent setting was evaluated. An epithelial smoothing constant was estimated based on a mathematical model published ...
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    5. Predicting Transepithelial Phototherapeutic Keratectomy Outcomes Using Fourier Domain Optical Coherence Tomography

      Predicting Transepithelial Phototherapeutic Keratectomy Outcomes Using Fourier Domain Optical Coherence Tomography
      PURPOSE:: The aim of this study was to use Fourier domain optical coherence tomography to predict transepithelial phototherapeutic keratectomy outcomes. METHODS:: This is a prospective case series. Subjects with anterior stromal corneal opacities underwent an excimer laser phototherapeutic keratectomy (PTK) combined with a photorefractive keratectomy using the VISX S4 excimer laser (AMO, Inc, Santa Ana, CA). Preoperative and postoperative Fourier domain optical coherence tomography images were used to develop a ...
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    6. Anterior Chamber Angle Measurements Using Schwalbe's Line With High-resolution Fourier-Domain Optical Coherence Tomography

      Anterior Chamber Angle Measurements Using Schwalbe's Line With High-resolution Fourier-Domain Optical Coherence Tomography
      Purpose: To use Fourier-domain optical coherence tomography (OCT) to measure the angle opening distance at Schwalbe's line (AOD-SL) and determine its value in anterior chamber angle assessment. Methods: Horizontal scans of the nasal and temporal anterior chamber angles in glaucoma subjects were performed at 830 nm wavelength Fourier-domain OCT. Images were graded by 2 ophthalmologists who assessed the visibility of Schwalbe's line (SL), anterior limbus (AL), scleral spur ...
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    7. Intraocular lens power calculation after previous myopic laser vision correction based on corneal power measured by Fourier-domain optical coherence tomography

      Intraocular lens power calculation after previous myopic laser vision correction based on corneal power measured by Fourier-domain optical coherence tomography
      ...Fourier-domain optical coherence tomography * Maolong Tang, PhD, * Li Wang, MD, PhD, * Douglas D. Koch, MD, * Yan Li, PhD, * David Huang, MD, PhD Affiliations + Corresponding Author Information Corresponding author: Davi...
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    8. Intraocular lens power calculation after myopic and hyperopic laser vision correction using optical coherence tomography

      Intraocular lens power calculation after myopic and hyperopic laser vision correction using optical coherence tomography
      Purpose To use optical coherence tomography (OCT) to measure corneal power and calculate intraocular lens (IOL) power in cataract surgeries after myopic and hyperopic laser vision correction (LVC). Methods Patients with previous LVC were enrolled in this prospective study at two centers (Doheny Eye Institute, Los Angeles, CA, USA and Cullen Eye Institute, Houston, TX, USA). Corneal power was measured with a Fourier-domain OCT system. The intravisit repeatability of OCT ...
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    9. Repeatability of laser in situ keratomileusis flap thickness measurement by Fourier-domain optical coherence tomography

      Repeatability of laser in situ keratomileusis flap thickness measurement by Fourier-domain optical coherence tomography
      ... Lauderdale, Florida, USA, May 2009. * Camila Haydée Rosas Salaroli, MD, * Yan Li, PhD, * Xinbo Zhang, PhD, * Maolong Tang, PhD, * José Luiz Branco Ramos, MD, * Norma Allemann, MD, PhD, * David Huang, MD, PhD Affiliation...
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    10. Pachymetric mapping with Fourier-domain optical coherence tomography

      Pachymetric mapping with Fourier-domain optical coherence tomography
      Purpose To evaluate the repeatability of Fourier-domain optical coherence tomography (OCT) pachymetric mapping and compare central corneal thickness (CCT) measurements by OCT, ultrasound pachymetry, and scanning-slit tomography. Setting Doheny Eye Institute, University of Southern California, Los Angeles, California, USA. Methods A Fourier-domain OCT system was used to map the corneal thickness in normal eyes with scans centered on the corneal vertex or the pupil. Repeatability of central and pericentral map ...
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    11. Reproducibility of Tear Meniscus Measurement by Fourier-Domain Optical Coherence Tomography: A Pilot Study

      BACKGROUND AND OBJECTIVE To study the reproducibility of tear meniscus measurement with high-speed high-resolution Fourier-domain optical coherence tomography (FD-OCT). PATIENTS AND METHODS Twenty normal participants were enrolled in this prospective study. The lower tear meniscus in the right eye of each subject was imaged by vertical scans centered on the inferior cornea and the lower eyelid using an FD-OCT system (RTVue; Optovue, Inc., Fremont, CA) with a corneal adaptor. The ...
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    12. Keratoconus Diagnosis with Optical Coherence Tomography Pachymetry Mapping

      Objective To detect abnormal corneal thinning in keratoconus using pachymetry maps measured by high-speed anterior segment optical coherence tomography (OCT). Design Cross-sectional observational study. Participants Thirty-seven keratoconic eyes from 21 subjects and 36 eyes from 18 normal subjects. Methods The OCT system operated at a 1.3 μm wavelength with a scan rate of 2000 axial scans per second. A pachymetry scan pattern (8 radials, 128 axial scans each; 10 ...
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    13. Optical coherence tomography of clear corneal incisions for cataract surgery

      Purpose To study the architecture of clear corneal incisions for phacoemulsification cataract surgery using optical coherence tomography (OCT). Setting Doheny Eye Institute and Department of Ophthalmology, Keck School of Medicine of the University of Southern California, Los Angeles, California, USA. Methods This prospective study comprised 20 eyes of 20 patients 1 month after cataract surgery performed by 1 of 2 experienced surgeons. Temporal clear corneal single-plane incisions were made with ...
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  2. Organizations in the News

    1. (16 articles) Center for Ophthalmic Optics and Lasers
    2. (10 articles) Oregon Health & Science University
    3. (10 articles) University of Southern California
    4. (3 articles) Fudan University
    5. (3 articles) Baylor College of Medicine
    6. (2 articles) Massachusetts Institute of Technology
    7. (2 articles) National Institutes of Health
    8. (1 articles) Sun Yat-Sen University
    9. (1 articles) Case Western Reserve University
    10. (1 articles) UCSF
    11. (1 articles) Cleveland Clinic
    12. (1 articles) Zhejiang University
  3. People in the News

    1. (16 articles) David Huang
    2. (5 articles) Xinbo Zhang
    3. (2 articles) Ou Tan
    4. (1 articles) Gangjun Liu
    5. (1 articles) Chunhui Jiang
    6. (1 articles) Ake Tzu-Hui Lu
    7. (1 articles) James G. Fujimoto
    8. (1 articles) Yali Jia
  4. OCT Companies in the News

    1. (5 articles) Optovue
    2. (2 articles) Carl Zeiss Meditec