1. Articles from Michael Engelbert

    1-9 of 9
    1. Optical coherence tomography en face analysis of the posterior vitreous reveal topographic relationships between premacular bursa, prevascular fissures and cisterns

      Optical coherence tomography en face analysis of the posterior vitreous reveal topographic relationships between premacular bursa, prevascular fissures and cisterns

      Purpose To characterize the topographic relationships among vitreous structures including the premacular bursa, prevascular vitreous fissures, cisterns and lacunae in healthy subjects using en face and cross-sectional swept-source optical coherence tomography (SS-OCT). Design Prospective comparative study. Subjects Sixty eyes of 60 healthy subjects (age range = 4 – 35 years). Eyes of individuals younger than 20 years (n= 29) were compared with eyes of individuals aged 20 years or older (n=31). Testing Twelve x 12-mm SS-OCT volume scans comprised of 1024 x 1024 A-scans centered at the fovea were acquired from each study eye. Main Outcome Measures En face and cross-sectional ...

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    2. Swept source optical coherence tomography of the posterior vitreous after pars plana vitrectomy

      Swept source optical coherence tomography of the posterior vitreous after pars plana vitrectomy

      Dear Editor, Swept source optical coherence tomography (SS-OCT) visualizes deep structures such as the choroid, sclera, and most recently, the vitreous at the posterior pole [ 1 ]. With a light wavelength of 1050 nm and scanning speed of 100,000 Hz, SS-OCT has several advantages over spectral domain OCT (SD-OCT), including improved penetration through opacities, faster acquisition times while maintaining high-quality images, and a wider field than SD-OCT (12 mm vs. 6 mm) [ 2 – 4 ]. SS-OCT can provide helpful high-resolution imaging when looking at vitreous pathology [ 4 – 6 ]. Herein, we present two cases where SS-OCT was beneficial in evaluating the vitreous ...

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    3. ASSOCIATION OF PREVASCULAR VITREOUS FISSURES AND CISTERNS WITH VITREOUS DEGENERATION AS ASSESSED BY SWEPT SOURCE OPTICAL COHERENCE TOMOGRAPHY

      ASSOCIATION OF PREVASCULAR VITREOUS FISSURES AND CISTERNS WITH VITREOUS DEGENERATION AS ASSESSED BY SWEPT SOURCE OPTICAL COHERENCE TOMOGRAPHY

      Purpose: To demonstrate the presence of prevascular vitreous fissures (PVF) and posterior vitreous cisterns in vivo and correlate with the degree of vitreous degeneration (VD). Methods: This was a cross-sectional study using Topcon Deep Range Imaging OCT-1 Atlantis 3D swept source optical coherence tomography for acquiring scans of posterior vitreous covering an 18 x 18-mm area in 104 eyes of 52 healthy volunteers without posterior vitreous detachment. Results: We observed that increasing age was associated with higher VD grades (P < 0.05). Prevascular vitreous fissures, characterized by areas of lower optical density overlying the retinal blood vessels, were identified in ...

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    4. Enhanced Vitreous Imaging Technique With Spectral-Domain Optical Coherence Tomography for Evaluation of Posterior Vitreous Detachment

      Enhanced Vitreous Imaging Technique With Spectral-Domain Optical Coherence Tomography for Evaluation of Posterior Vitreous Detachment

      Vitreous degeneration, gradual separation of the posterior vitreous cortex (PVC), and eventual development of posterior vitreous detachment (PVD) are important in vitreoretinal interface diseases. However, determination of the stages of PVD with biomicroscopy or ultrasonography is not sufficiently sensitive and specific. 1 , 2 Since the advent of spectral-domain (SD) optical coherence tomography (OCT), PVD detection has improved and new concepts regarding the evolution of PVD have emerged. 2 , 3 However, SD-OCT remains underused, possibly owing to general low awareness of its potential to image the vitreoretinal interface and the vitreous itself. 4 , 5 We aim to demonstrate the usefulness of ...

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    5. The Premacular Bursa's Shape Revealed In Vivo by Swept-Source Optical Coherence Tomography

      The Premacular Bursa's Shape Revealed In Vivo by Swept-Source Optical Coherence Tomography

      Objective To resolve the controversy surrounding the shape and relationship of posterior vitreous spaces by characterizing the connections between the premacular bursa, the area of Martegiani, and Cloquet's canal. Design Comprehensive posterior vitreous maps were created using swept-source optical coherence tomography (SS OCT) in a cross-sectional study. Participants The posterior vitreous of 102 eyes of 51 volunteers 21 to 54 years of age without ocular pathologic features was imaged using SS OCT. Methods The DRI OCT-1 Atlantis 3D SS OCT (Topcon Medical Systems, Oakland, NJ) was used to acquire scans of the posterior vitreous over an 18×18-mm area ...

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    6. POLYPOIDAL CHOROIDAL VASCULOPATHY: Simultaneous Indocyanine Green Angiography and Eye-Tracked Spectral Domain Optical Coherence Tomography Findings

      POLYPOIDAL CHOROIDAL VASCULOPATHY: Simultaneous Indocyanine Green Angiography and Eye-Tracked Spectral Domain Optical Coherence Tomography Findings

      Purpose: To describe simultaneous scanning laser ophthalmoscope indocyanine green angiographic and eye-tracked spectral-domain optical coherence tomography findings in eyes with polypoidal choroidal vasculopathy (PCV).Methods: Eighteen eyes of 18 patients with PCV because of a variety of different diagnoses were imaged with simultaneous scanning laser ophthalmoscope indocyanine green angiography and eye-tracked spectral-domain optical coherence tomography to localize the polyps and their associated vascular structures with respect to the retinal layers.Results: Regardless of the underlying diagnosis, simultaneous scanning laser ophthalmoscope indocyanine green angiography and eye-tracked spectral-domain optical coherence tomography imaging localized the polypoidal structures of PCV to within larger Type ...

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    7. Outer Retinal Tubulation: A Novel Optical Coherence Tomography Finding

      Objective  To describe tubular structures found in the outer retina seen in a variety of retinal disorders. Methods  Sixty-nine eyes of 63 patients were examined with spectral-domain optical coherence tomography. Optical coherence tomography C-scans were correlated with their corresponding B-scans. The prevalence, number, size, and shape of the tubular structures were determined. Results  Branching tubules were identified in the outer retina of 54 patients with age-related macular degeneration and in 9 patients with other diagnoses. The tubules appeared as round or ovoid hyporeflective spaces with hyperreflective borders on the B-scans, measuring 40 to 140 µm high and 40 to 2260 ...
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    8. Outer Retinal Tubulation: A Novel Optical Coherence Tomography Finding

      Outer Retinal Tubulation: A Novel Optical Coherence Tomography Finding

      Objective To describe tubular structures found in the outer retina seen in a variety of retinal disorders. Methods Sixty-nine eyes of 63 patients were examined with spectral-domain optical coherence tomography. Optical coherence tomography C-scans were correlated with their corresponding B-scans. The prevalence, number, size, and shape of the tubular structures were determined. Results Branching tubules were identified in the outer retina of 54 patients with age-related macular degeneration and in 9 patients with other diagnoses. The tubules appeared as round or ovoid hyporeflective spaces with hyperreflective borders on the B-scans, measuring 40 to 140 Μm high and 40 to 2260 ...

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    1-9 of 9
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    1. (7 articles) LuEsther T. Mertz Retinal Research Center
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    POLYPOIDAL CHOROIDAL VASCULOPATHY: Simultaneous Indocyanine Green Angiography and Eye-Tracked Spectral Domain Optical Coherence Tomography Findings The Premacular Bursa's Shape Revealed In Vivo by Swept-Source Optical Coherence Tomography Enhanced Vitreous Imaging Technique With Spectral-Domain Optical Coherence Tomography for Evaluation of Posterior Vitreous Detachment ASSOCIATION OF PREVASCULAR VITREOUS FISSURES AND CISTERNS WITH VITREOUS DEGENERATION AS ASSESSED BY SWEPT SOURCE OPTICAL COHERENCE TOMOGRAPHY Swept source optical coherence tomography of the posterior vitreous after pars plana vitrectomy Giant premacular bursa: a novel finding of the posterior vitreous in two patients with Stickler syndrome type 1 revealed by swept-source optical coherence tomography Outer Retinal Tubulation: A Novel Optical Coherence Tomography Finding Optical coherence tomography en face analysis of the posterior vitreous reveal topographic relationships between premacular bursa, prevascular fissures and cisterns Close Assessment and Testing for Chronic Graft Versus Host Disease, CATCH Study GaAs-Based InPBi Quantum Dots for High Efficiency Super-Luminescence Diodes Pearls and Pitfalls of Optical Coherence Tomography Angiography Image Interpretation Novel optical coherence tomography findings in idiopathic choroidal folds