1. Articles from Ahmad A. Alwassia

    1-5 of 5
    1. Analysis of choroidal thickness in eyes treated with focal laser photocoagulation using SD-OCT

      Analysis of choroidal thickness in eyes treated with focal laser photocoagulation using SD-OCT

      Objective To analyze the effect of focal laser photocoagulation on choroidal thickness in patients with diabetic macular edema (DME), using spectral-domain optical coherence tomography (SD-OCT). Design Retrospective review. Participants Twenty-two eyes of 22 patients diagnosed with DME and treated with focal laser photocoagulation (treatment group) and 19 fellow treatment-naive eyes (control group) who underwent high-definition 1-line raster scanning using the Cirrus SD-OCT at the New England Eye Center, Tufts Medical Center (Boston, Mass.) between November 2009 and April 2012. Methods The SD-OCT images were analyzed for the measurement of choroidal thickness by 2 independent observers experienced in analyzing OCT images ...

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    2. Analysis of the Morphology and Vascular Layers of the Choroid in Retinitis Pigmentosa Using Spectral-Domain OCT

      Analysis of the Morphology and Vascular Layers of the Choroid in Retinitis Pigmentosa Using Spectral-Domain OCT

      BACKGROUND AND OBJECTIVE: To analyze choroidal morphology and vascular layers in eyes with retinitis pigmentosa (RP) using spectral-domain optical coherence tomography. PATIENTS AND METHODS: Cross-sectional, retrospective analysis of 14 patients (14 eyes) with RP and 33 healthy subjects (33 eyes) who underwent high-definition one-line raster scanning at a single center. Two independent raters evaluated the morphology, thickness, and vascular layers of the choroid in both groups. RESULTS: The choroid had an irregular shape in 11 of 14 eyes (79%) with RP. The thickest point of choroid was not subfoveal as in healthy eyes, and exaggerated nasal thinning of the choroid ...

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    3. Retinal Neovascularization Secondary to Proliferative Diabetic Retinopathy Characterized By Spectral Domain Optical Coherence Tomography

      Retinal Neovascularization Secondary to Proliferative Diabetic Retinopathy Characterized By Spectral Domain Optical Coherence Tomography

      Purpose: The purpose of this study was to characterize diabetic retinal neovascularization (NV) and accompanying retinal and vitreal morphologic changes using high-resolution spectral domain optical coherence tomography. Methods: A cross-sectional retrospective analysis was performed on 16 eyes of 14 nonconsecutive subjects with proliferative diabetic retinopathy that were seen between August 2011 and December 2011 at the New England Eye Center, Boston, MA. Patients who had NV of the disk, NV elsewhere, and intraretinal microvascular abnormalities were scanned using optical coherence tomography directly over the region of the abnormal vessels. Results: Characteristic changes of the retinal vasculature, retina, and vitreous were ...

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    4. Exercise-Induced Acute Changes in Systolic Blood Pressure DO Not Alter Choroidal Thickness As Measured By A Portable Spectral-Domain Optical Coherence Tomography Device

      Exercise-Induced Acute Changes in Systolic Blood Pressure DO Not Alter Choroidal Thickness As Measured By A Portable Spectral-Domain Optical Coherence Tomography Device

      Purpose: To measure choroidal thickness in patients manifesting an acute change in systemic arterial blood pressure using a portable spectral-domain optical coherence tomography device (iVue). Methods: Fifteen patients (15 eyes) undergoing cardiac exercise stress testing were scanned using a portable spectral-domain optical coherence tomography system (iVue). Two scan protocols were used: cross line scan for measuring choroidal thickness and the retina map scan to measure retinal thickness. Each patient was scanned before and within 3 minutes after the stress test. Blood pressure was measured at the same time as the acquisition of the scans. Choroidal thickness was measured from the ...

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    5. Sequential Optical Coherence Tomography Images of Retinal Necrosis in Acute Ocular Toxoplasmosi

      Sequential Optical Coherence Tomography Images of Retinal Necrosis in Acute Ocular Toxoplasmosi

      Purpose: To describe the features of sequential spectral-domain optical coherence tomography (OCT) images in an eye with acute primary toxoplasmosis. Methods: Case report of an individual diagnosed with acute primary toxoplasmic retinochoroiditis. Initial and follow-up spectral-domain OCT findings are described. Results: This patient developed retinitis as a result of an acute infection consistent with Toxoplasma gondii suggested by toxoplasma-specific IgM serology and the response to therapy. The retinitis appeared initially as a hyperreflective region on spectral-domain OCT. An intraretinal cyst consistent with T. gondii parasitic infection was identified. Subsequent OCT images demonstrated progression to full-thickness retinal necrosis with the development ...

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    1-5 of 5
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  2. Topics in the News

    1. (5 articles) Tufts University
    2. (5 articles) Jay S. Duker
    3. (2 articles) Optovue
    4. (2 articles) Carl Zeiss Meditec
    5. (1 articles) University of São Paulo
    6. (1 articles) Universidade Federal de São Paulo
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    Sequential Optical Coherence Tomography Images of Retinal Necrosis in Acute Ocular Toxoplasmosi Exercise-Induced Acute Changes in Systolic Blood Pressure DO Not Alter Choroidal Thickness As Measured By A Portable Spectral-Domain Optical Coherence Tomography Device Retinal Neovascularization Secondary to Proliferative Diabetic Retinopathy Characterized By Spectral Domain Optical Coherence Tomography Analysis of the Morphology and Vascular Layers of the Choroid in Retinitis Pigmentosa Using Spectral-Domain OCT Analysis of choroidal thickness in eyes treated with focal laser photocoagulation using SD-OCT Stress, anxiety, harassment: huge survey reveals pressures of scientists’ working lives Use of optical coherence tomography deemed feasible after first-in-human analysis Widefield Swept Source OCTA in Retinitis Pigmentosa Anterior segment optical coherence tomographic characterisation of keratic precipitate Vascular changes with optical coherence tomography angiography during aura of migraine: A case report Numerical method for axial motion artifact correction in retinal spectral-domain optical coherence tomography OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY IN PATIENTS WITH RETINITIS PIGMENTOSA–ASSOCIATED CYSTOID MACULAR EDEMA