1. Susanna S. Park

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    1. Mentioned In 22 Articles

    2. Factors Affecting Repeatability of Foveal Avascular Zone Measurement Using Optical Coherence Tomography Angiography in Pathologic Eyes

      Factors Affecting Repeatability of Foveal Avascular Zone Measurement Using Optical Coherence Tomography Angiography in Pathologic Eyes
      Purpose: To determine factors that may affect the repeatability of the foveal avascular zone (FAZ) measurement obtained using optical coherence tomography angiography (OCTA) including instrument type, image segmentation, image quality, and fundus pathology. Patients and Methods: This prospective single-center study enrolled 43 subjects (85 eyes) with retinal vasculopathy, macular edema, optic pathology or normal contralateral eye. The macula was imaged twice using Optovue Angiovue and once using Cirrus Angioplex to ...
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    3. Retinal Vessel Density in Exudative and Non-Exudative Age-Related Macular Degeneration on Optical Coherence Tomography Angiography

      Retinal Vessel Density in Exudative and Non-Exudative Age-Related Macular Degeneration on Optical Coherence Tomography Angiography
      Importance Although the choroid contributes to the pathogenesis of age-related macular degeneration (AMD), the role of retinal perfusion is unclear. Purpose To compare retinal vascular measurements between eyes with non-exudative and exudative AMD using optical coherence tomography angiography (OCT-A). Design Retrospective, cross-sectional study. Methods OCT-A images were analyzed from 310 eyes of 182 patients (mean age 78.88.8) with non-exudative (54.2%) and exudative (45.8%) AMD to measure ...
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    4. Phase-Variance Optical Coherence Tomographic Angiography Imaging of Choroidal Perfusion Changes Associated With Acute Posterior Multifocal Placoid Pigment Epitheliopathy

      Phase-Variance Optical Coherence Tomographic Angiography Imaging of Choroidal Perfusion Changes Associated With Acute Posterior Multifocal Placoid Pigment Epitheliopathy
      This case report uses phase-variance optical coherence tomographic angiography to demonstrate transient inner choroidal flow changes associated with acute posterior multifocal placoid pigment epitheliopathy. Acute posterior multifocal placoid pigment epitheliopathy (APMPPE) is characterized by bilateral multiple placoid white-gray lesions of the posterior pole at the level of the retinal pigment epithelium (RPE) and/or choriocapillaris, which self-resolve with recovery of vision. 1 , 2 The etiology is unknown, but APMPPE has ...
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    5. Detection of PED vascularization using phase-variance OCT angiography

      Detection of PED vascularization using phase-variance OCT angiography
      Purpose: To demonstrate the use of phase-variance optical coherence tomography (PV-OCT) angiography for detection of pigment epithelial detachment (PED) vascularization in age-related macular degeneration (AMD). Patients and methods: Patients with PEDs and exudative AMD were evaluated by the Retina Services at the University of California, Davis, and the University of California, San Francisco. Each subject underwent fluorescein angiography and structural optical coherence tomography (OCT). Phase-variance OCT analysis was used to ...
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    6. Staging of Macular Telangiectasia: Power-Doppler Optical Coherence Tomography and Macular Pigment Optical Density

      Staging of Macular Telangiectasia: Power-Doppler Optical Coherence Tomography and Macular Pigment Optical Density
      Purpose: Two methods were used to study the stages of macular telangiectasia (MacTel): Power-Doppler optical coherence tomography (PD-OCT) which allows imaging of retinal circulation in three-dimensions, and macular pigment optical density (MPOD) which quantifies the distribution of macular carotenoids. Methods: Among 49 patients with MacTel identified, 12 eyes (6 patients) with MacTel and 7 age-matched control eyes (7 patients) were imaged with a custom-built Fourier-domain OCT instrument to acquire PD-OCT ...
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    7. FIVE-YEAR FOLLOW-UP OF MACULAR MORPHOLOGIC CHANGES AFTER RHEGMATOGENOUS RETINAL DETACHMENT REPAIR: Fourier Domain OCT Findings

      FIVE-YEAR FOLLOW-UP OF MACULAR MORPHOLOGIC CHANGES AFTER RHEGMATOGENOUS RETINAL DETACHMENT REPAIR: Fourier Domain OCT Findings
      Purpose: To evaluate serially long-term macular morphologic changes after successful macula-involving rhegmatogenous retinal detachment repair and correlate changes with macular function. Methods: Repeat Fourier domain optical coherence tomography (FD OCT) imaging and microperimetry (MP-1) testing of 8 of the initial cohort of 17 eyes studied 5 years earlier. Results: The mean follow-up after rhegmatogenous retinal detachment repair was 3.4 months (range, 1-8.5 months) for the first FD OCT ...
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    8. Feature Of The Week 2/19/12: UC Davis Researchers Investigate the Reproducibility of Macular Thickness Measurements Among Five Commercial OCT Instruments

      Feature Of The Week 2/19/12: UC Davis Researchers Investigate the Reproducibility of Macular Thickness Measurements Among Five Commercial OCT Instruments
      There are now over 10 ophthalmic OCT instrument makers selling into the commercial OCT ophthalmology market. Today there are both time-domain, spectral-domain, and swept-source commercial OCT systems. There have been various studies comparing different aspects of these instruments.  One such study was by researchers at the University of California Davis Eye Center compared five instruments (Stratus/Zeiss, Cirrus/Zeiss, Spectralis/Heidelberg, RTVue/Optovue, and SD-OCT/Topcon in their central macular ...
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    9. Reproducibility of Macular Thickness Measurement Among Five OCT Instruments: Effects of Image Resolution, Image Registration, and Eye Tracking

      Reproducibility of Macular Thickness Measurement Among Five OCT Instruments: Effects of Image Resolution, Image Registration, and Eye Tracking
      ...ta using the three-point image registration feature of Cirrus SD-OCT (version 4.5). Address correspondence to Susanna S. Park, MD, PhD, Department of Ophthalmology & Vision Science, University of California Davis Eye Cen...
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    10. Comparison of Retinal Nerve Fiber Layer and Central Macular Thickness Measurements Among Five Different Optical Coherence Tomography Instruments in Patients With Multiple Sclerosis and Optic Neuritis

      Comparison of Retinal Nerve Fiber Layer and Central Macular Thickness Measurements Among Five Different Optical Coherence Tomography Instruments in Patients With Multiple Sclerosis and Optic Neuritis
      Background: To compare the mean central macular thickness (CMT) and the mean average optic nerve retinal nerve fiber layer (RNFL) thickness in the eyes of patients with a history of optic neuritis and/or multiple sclerosis (MS) using 5 commercially available optical coherence tomography (OCT) instruments. Methods: Cross-sectional study including 46 patients (92 eyes) with a history of optic neuritis and/or MS. Both eyes were imaged on the same ...
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    11. Fourier-domain optical coherence tomography of eyes with idiopathic epiretinal membrane: correlation between macular morphology and visual function

      Fourier-domain optical coherence tomography of eyes with idiopathic epiretinal membrane: correlation between macular morphology and visual function
      Purpose The purpose of this study is to evaluate the macular morphological changes associated with idiopathic epiretinal membrane (iERM) using high-resolution Fourier-domain optical coherence tomography (FD-OCT), as they correlate with visual acuity and microperimetry (MP-1). Methods In all, 24 eyes (19 subjects) with iERM were imaged prospectively using FD-OCT with axial resolution of 4.5 μm and transverse resolution of 10 to 15 μm. MP-1 and Stratus OCT were carried ...
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    12. High-Resolution Fourier-Domain Optical Coherence Tomography of Choroidal Neovascular Membranes Associated with Age-Related Macular Degeneration

      High-Resolution Fourier-Domain Optical Coherence Tomography of Choroidal Neovascular Membranes Associated with Age-Related Macular Degeneration
      High-resolution Fourier-domain optical coherence tomography (Fd-OCT) provided visualization of choroidal neovascular membrane (CNVM) and associated morphologic changes in the retina in eyes with neovascular age-related macular degeneration. The growth pattern and size of CNVM was determined with Fd-OCT and correlated better with findings on fluorescein angiography in eyes with classic lesions.
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    13. 1-15 of 22 1 2 »
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  2. About Susanna S. Park

    Susanna S. Park

    Susanna S. Park , M.D., Ph.D. is at the University of California Davis Cancer Center. Dr. Park is a vitreo-retinal specialist who provides both surgical and medical management of all vitreo-retinal disorders including macular degeneration, diabetic retinopathy, retinal detachment, posterior uveitis and trauma. She also treats patients with intraocular tumors including proton beam irradiation for ocular melanomas and chemotherapy for retinoblastomas. Dr. Park is interested in using new imaging techniques to study macular disorders and in developing new treatments for retinal disorders including macular degeneration and diabetic retinopathy. Dr. Park is devoted to providing the best and latest treatments for her patients with vitreo-retinal disorders. She believes that this can best achieved by a combination of excellent medical support staff, latest diagnostic instruments and thorough patient education. As such, Dr. Park and her staff are always readily available for any questions or concerns from her patients.

  3. Quotes

    1. With this system, by increasing the light source band width and by increasing the scan rate by 25-fold, the entire macula can be imaged with an axial resolution of 4 to 4.5 µm. This increased axial resolution allows the individual layers of the retina to be visualized better.
      In Fourier-domain optical coherence tomography allows improved visualization of retinal layers