1. David S. Friedman

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    1. Mentioned In 25 Articles

    2. Understanding diagnostic disagreement in angle closure assessment between anterior segment optical coherence tomography and gonioscopy

      Understanding diagnostic disagreement in angle closure assessment between anterior segment optical coherence tomography and gonioscopy
      Background/aims Although being a more objective tool for assessment and follow-up of angle closure, reliability studies have reported a moderate diagnostic performance for anterior segment optical coherence tomography (OCT) technologies when comparing with gonioscopy as the reference standard. We aim to determine factors associated with diagnostic disagreement in angle closure when assessed by anterior segment swept source OCT (SS-OCT, CASIA SS-1000; Tomey, Nagoya, Japan) and gonioscopy. Methods Cross-sectional study ...
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    3. Assessment of Circumferential Angle Closure with Swept-Source Optical Coherence Tomography: a community based study

      Assessment of Circumferential Angle Closure with Swept-Source Optical Coherence Tomography: a community based study
      Purpose To evaluate the diagnostic performance of swept-source optical coherence tomography (SS-OCT, CASIA SS-1000, Tomey Corporation, Nagoya, Japan) for angle closure detection, in comparison with gonioscopy in a community setting. Design Reliability analysis. Methods A total of 2027 phakic subjects aged 50 years, with no previous history of glaucoma, laser (including peripheral iridotomy), intraocular surgery or ocular trauma, were consecutively recruited from a community polyclinic in Singapore. Gonioscopy was performed ...
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    4. Predictors of 1-year visual outcome in OCT analysis comparing ranibizumab monotherapy versus combination therapy with PDT in exsudative age-related macular degeneration

      Predictors of 1-year visual outcome in OCT analysis comparing ranibizumab monotherapy versus combination therapy with PDT in exsudative age-related macular degeneration
      ...alth impact of Age-Related Eye Disease Study results: AREDS report no. 11. Arch Ophthalmol. 2003;121:1621–4. Friedman DS, O’Colmain BJ, Munoz B, et al. Prevalence of age-related macular degeneration in the United States...
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    5. Development of a Score and Probability Estimate for Detecting Angle Closure Based on Anterior Segment Optical Coherence Tomography

      Development of a Score and Probability Estimate for Detecting Angle Closure Based on Anterior Segment Optical Coherence Tomography
      ...ns + Singapore Eye Research Institute and Singapore National Eye Center, Singapore, Republic of Singapore , * David S. Friedman Affiliations + Wilmer Eye Institute, Dana Center for Preventive Ophthalmology, Johns Hopkins...
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    6. Assessment of Circumferential Angle-Closure by the Iris–Trabecular Contact Index with Swept-Source Optical Coherence Tomography

      Assessment of Circumferential Angle-Closure by the Iris–Trabecular Contact Index with Swept-Source Optical Coherence Tomography
      ...h Affiliations + Singapore National Eye Centre, Singapore and Singapore Eye Research Institute, Singapore , * David S. Friedman, MD Affiliations + Wilmer Eye Institute, Dana Center for Preventive Ophthalmology and Johns ...
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    7. Analysis of Anterior Segment Dynamics Using Anterior Segment Optical Coherence Tomography Before and After Laser Peripheral Iridotomy

      Analysis of Anterior Segment Dynamics Using Anterior Segment Optical Coherence Tomography Before and After Laser Peripheral Iridotomy
      Objective To evaluate changes in the speed of pupil constriction and in anterior segment parameters after laser peripheral iridotomy (LPI) in patients with angle closure using anterior segment optical coherence tomography. Methods In this prospective observational study, videos of pupil and anterior segment changes in response to illumination were captured with real-time video recording using anterior segment optical coherence tomography and were analyzed frame by frame before and after LPI ...
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    8. Classification Algorithms Based on Anterior Segment Optical Coherence Tomography Measurements for Detection of Angle Closure

      Classification Algorithms Based on Anterior Segment Optical Coherence Tomography Measurements for Detection of Angle Closure
      ...Singapore + Department of Statistics and Applied Probability, National University of Singapore, Singapore , * David S. Friedman, MD, PhD Affiliations + Wilmer Eye Institute, Dana Center for Preventive Ophthalmology, John...
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    9. Swept source optical coherence tomography measurement of the iris–trabecular contact (ITC) index: a new parameter for angle closure

      Swept source optical coherence tomography measurement of the iris–trabecular contact (ITC) index: a new parameter for angle closure
      ... for angle closure Sue-Wei Ho, Mani Baskaran, Ce Zheng, Tin A. Tun, Shamira A. Perera, Arun K. Narayanaswamy, David S. Friedman and Tin Aung * Download PDF (422.4 KB) * View HTML * Permissions & Reprints * Journal Advert...
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    10. Comparison of EyeCam and anterior segment optical coherence tomography in detecting angle closure

      Comparison of EyeCam and anterior segment optical coherence tomography in detecting angle closure
      Purpose: To compare the diagnostic performance of EyeCam (Clarity Medical Systems, Pleasanton, CA, USA) and anterior segment optical coherence tomography (ASOCT, Visante; Carl Zeiss Meditec, Dublin, CA, USA) in detecting angle closure, using gonioscopy as the reference standard. Methods: Ninety-eight phakic patients, recruited from a glaucoma clinic, underwent gonioscopy by a single examiner, and EyeCam and ASOCT imaging by another examiner. Another observer, masked to gonioscopy findings, graded EyeCam and ...
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    11. Changes in Anterior Segment Morphology after Laser Peripheral Iridotomy: An Anterior Segment Optical Coherence Tomography Study

      Changes in Anterior Segment Morphology after Laser Peripheral Iridotomy: An Anterior Segment Optical Coherence Tomography Study
      ...Hospital, Singapore, and the Yong Loo Lin School of Medicine, National University of Singapore, Singapore , * David S. Friedman, MD, MPH Affiliations + Wilmer Eye Institute and Johns Hopkins Bloomberg School of Public He...
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    12. Association of Narrow Angles With Anterior Chamber Area and Volume Measured With Anterior-Segment Optical Coherence Tomography]

      Association of Narrow Angles With Anterior Chamber Area and Volume Measured With Anterior-Segment Optical Coherence Tomography]
      ...ar risk factors. Ren-Yi Wu, MD, PhD; Monisha E. Nongpiur, MD; Ming-Guang He, MD, PhD; Lisandro M. Sakata, MD; David S. Friedman, MD, PhD; Yiong-Huak Chan, PhD; Raghavan Lavanya, MD; Tien-Yin Wong, MD, PhD; Tin Aung, MBBS...
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    13. Choroidal Thickness Measured by Spectral Domain Optical Coherence Tomography: Factors Affecting Thickness in Glaucoma Patients

      Choroidal Thickness Measured by Spectral Domain Optical Coherence Tomography: Factors Affecting Thickness in Glaucoma Patients
      Purpose: To measure choroidal thickness and to determine parameters associated with it.Design: Cross-sectional study.Participants: Seventy-four glaucoma patients and glaucoma suspects.Methods: Spectral domain optical coherence tomography (SD-OCT) scans were obtained to estimate average choroidal thickness in a group of glaucoma suspects and glaucoma patients. The average thickness was calculated from enhanced depth SD-OCT images and manually analyzed with Image J software. Open-angle glaucoma, open-angle glaucoma suspect, primary angle-closure ...
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    14. Single versus sequential testing with scanning peripheral anterior chamber depth analyser, IOLMaster and anterior segment optical coherence tomography for the detection of narrow angles

      Single versus sequential testing with scanning peripheral anterior chamber depth analyser, IOLMaster and anterior segment optical coherence tomography for the detection of narrow angles
      Background Scanning peripheral anterior chamber depth analyser (SPAC), IOLMaster and anterior segment optical coherence tomography (AS-OCT) are devices that can screen non-invasively for narrow angles (NAs) and may reduce the need for gonioscopy, especially where the availability of ophthalmologists is limited. When used individually to detect NAs, neither SPAC, AS-OCT nor IOLMaster were able to achieve both high sensitivity and specificity when using gonioscopy as a gold standard. Aims To ...
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  2. About David S. Friedman

    David S. Friedman

    David S. Friedman is an Assistant Professor is an Assistant Professor of Ophthalmology at the Wilmer Eye Institute Johns Hopkins University.