1. Wolfgang Geitzenauer

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    1. Mentioned In 22 Articles

    2. RNFL thickness in MS-associated acute optic neuritis using SD-OCT: critical interpretation and limitations

      RNFL thickness in MS-associated acute optic neuritis using SD-OCT: critical interpretation and limitations
      Purpose:  Axonal loss is considered a key prognostic factor in diagnosing and monitoring the progress of multiple sclerosis (MS). The purpose of our research was to determine whether the measurement of retinal nerve fibre layer thickness (RNFLT) as measured with high-resolution spectral-domain optical coherence tomography (SD-OCT) differs between optic nerve injury following acute optic neuritis (ON) or following unregistered subclinical axonal damage in patients with MS.Methods:  High-resolution SD-OCT measurements ...
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    3. Heterogeneous Pattern of Retinal Nerve Fiber Layer in Multiple Sclerosis. High Resolution Optical Coherence Tomography: Potential and Limitations

      Heterogeneous Pattern of Retinal Nerve Fiber Layer in Multiple Sclerosis. High Resolution Optical Coherence Tomography: Potential and Limitations
      ...to markedly reduced levels). Nermin Serbecic Fahmy Aboul-Enein Sven C. Beutelspacher Martin Graf Karl Kircher Wolfgang Geitzenauer Werner Brannath Priska Lang Wolfgang Kristoferitsch Hans Lassmann Andreas Reitner Ursula ...
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    4. Retinal optical coherence tomography: past, present and future perspectives

      Retinal optical coherence tomography: past, present and future perspectives
      Optical coherence tomography (OCT) has undergone substantial changes since its first use in the 1990s. Although the first generation of OCT systems heralded a new era in the non-invasive diagnostic options in ophthalmology, they did not reveal much detail. Later devices offered more information and helped in the diagnosis and treatment of a variety of pathological conditions, primarily of the retina. With today's spectral-domain type models ophthalmologists are offered ...
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    5. High-Resolution Optical Coherence Tomography after Surgery for Vitreomacular Traction: A 2-Year Follow-up

      High-Resolution Optical Coherence Tomography after Surgery for Vitreomacular Traction: A 2-Year Follow-up
      PurposeTo characterize the morphologic changes in vitreomacular traction (VMT) before and after surgery using spectral-domain optical coherence tomography (SD OCT) and to identify patterns relevant to visual function.DesignProspective, interventional case series.ParticipantsThirty eyes of 30 consecutive patients with visual acuity of less than 20/32 resulting from idiopathic VMT.MethodsA conventional 20-gauge 3-port vitrectomy was performed, including removal of the epiretinal membrane (ERM) and internal limiting membrane. Examinations were ...
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    6. Comparing Retinal Thickness Measurements From Cirrus Spectral Domain- and Stratus Time Domain-Optical Coherence Tomography

      Purpose: The purpose of this study was to compare retinal measurements obtained using spectral domain-optical coherence tomography with measurements obtained using time domain-optical coherence tomography.Methods: Three hundred and seventy subjects were recruited at three university-based and one community-based retina practice for a cross-sectional observational study. For each subject, one eye was enrolled as the study eye. A Stratus Fast Macular scan was performed, and a Cirrus 200 x 200 ...
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    7. Automatic and manual segmentation of healthy retinas using high-definition optical coherence tomography

      Purpose: This study compared automatic- and manual segmentation modalities in the retina of healthy eyes using high-definition optical coherence tomography (HD-OCT).Methods: Twenty retinas in 20 healthy individuals were examined using an HD-OCT system (Carl Zeiss Meditec, Inc.). Three-dimensional imaging was performed with an axial resolution of 6 [mu]m at a maximum scanning speed of 25 000 A-scans/second. Volumes of 6 × 6 × 2 mm were scanned. Scans were ...
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    8. Alterations of intraretinal layers in acute central serous chorioretinopathy

      Purpose: Optical coherence tomography (OCT) is restricted by its low scanning speed and limited resolution. High-definition raster-scanning OCT (HD-OCT) was used to evaluate changes in retinal microstructure in patients with acute central serous chorioretinopathy (CSCR) and to find new morphological features.Methods: Eighteen patients with subretinal fluid accumulation caused by acute CSCR were imaged in a cross-sectional study design. High-speed frequency-domain HD-OCT was used to image an area of 6 ...
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    9. Three-dimensional imaging of an optic disk pit using high resolution optical coherence tomography

      PURPOSE. To clarify the origin of the coexisting fluid in an optic disc pit case by using optical coherence tomography (OCT). METHODS. High resolution OCT (Cirrus™ prototype, Carl Zeiss Meditec) was used for image acquisition; three dimensional segmentation was performed using Food and Drug Administration–approved imaging software (3D-Doctor V4.0, Able software Corp., Lexington, MA) to demonstratethe structural changes of the optic nerve head and the retina. RESULTS. Using ...
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    10. Quantitative measurement of the degree of polarization uniformity of light backscattered by retinal layers by polarization sensitive OCT

      We report on an extension of our previously presented polarization sensitive optical coherence tomography (PS-OCT) technique towards quantitative measurements and imaging of depolarization of light backscattered by the various layers of the human ocular fundus in vivo. We use a state of the art spec ... [Proc. SPIE 7168, 716814 (2009)] published Tue Feb 24, 2009.
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    11. Imaging the human retina in vivo with combined spectral-domain polarization-sensitive optical coherence tomography and scanning laser ophthalmoscopy

      Polarization-sensitive (PS) optical coherence tomography (OCT) allows for depth-resolved measurement of light polarizing properties of different layers in the human retina. Since their inherent polarizing properties are different, the retinal structures can be identified using PS-OCT. We present an ... [Proc. SPIE 7163, 71630N (2009)] published Wed Feb 18, 2009.
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    12. Evaluation of ranibizumab-induced changes of high-resolution optical coherence tomographic retinal morphology and their impact on visual function

      ...optical coherence tomographic retinal morphology and their impact on visual function Christopher G Kiss ^1^*, Wolfgang Geitzenauer ^2, Christian Simader ^2, Giovanni Gregori ^3, and Ursula Schmidt-Erfurth ^4 ^^1 Ophthalm...
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    13. 1-15 of 22 1 2 »
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  2. About Wolfgang Geitzenauer

    Wolfgang Geitzenauer is with the Ophthalmology & Optometry Department, Medical University of Vienna, Vienna, Austria.