Publications by authors named "Swetha Bindu Velaga"

Objective: The purpose of this study was to quantitatively analyze and compare OCT characteristics of intraretinal hyper-reflective foci (IHRF) in eyes with diabetic retinopathy (DR) versus age-related macular degeneration (AMD).

Design: a retrospective observational study.

Participants: 54 treatment-naïve eyes (27 DR and 27 AMD).

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Purpose: To compare the ganglion cell complex (GCC) thickness in eyes with age-related macular degeneration (AMD) vs healthy controls in an elderly Amish population.

Design: Prospective cross-sectional study.

Methods: This is a post hoc analysis of the family-based prospective study of Amish subjects.

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Purpose: Intraretinal hyper-reflective foci (IHRF) are optical coherence tomography (OCT) risk factors for progression of age-related macular degeneration (AMD). In this study we assess the change in the number and distribution of IHRF over two years.

Methods: The axial distribution of IHRF were quantified in eyes with intermediate AMD (iAMD) at baseline and 24 months, using a series of 5 sequential equidistant en face OCT retinal slabs generated between the outer border of the internal limiting membrane (ILM) and the inner border of the retinal pigment epithelium (RPE).

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Purpose: To assess the relationship between qualitative diabetic retinopathy (DR) scales with the precise numbers and surface area of DR lesions within the Early Treatment Diabetic Retinopathy Study (ETDRS) standard seven field (S7F) region on ultrawide-field (UWF) color fundus images.

Methods: In this study, we collected UWF images from adult patients with diabetes. Poor-quality images and eyes with any pathology precluding assessment of DR severity were excluded.

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Purpose: To compare drusen size metrics (apical height and basal width) on optical coherence tomography (OCT) B-scans with their size assessed on color photos in eyes with age-related macular degeneration (AMD) and normal aging.

Methods: A total of 508 drusen were evaluated in this analysis. Flash color fundus photos (CFP), infrared reflectance (IR) images, and OCT B-scans obtained at the same visit were evaluated.

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Objective: To evaluate disorganization of retinal inner layers (DRIL), as detected on spectral-domain optical coherence tomography (OCT) images, as a biomarker for diabetic macular edema (DME) activity, visual function, and prognosis in eyes with DME.

Design: Longitudinal prospective.

Methods: Post hoc correlation analyses were performed on data from a phase 2 clinical trial.

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Purpose: To evaluate whether the distribution of diabetic retinopathy (DR) lesions differs among various ethnicities.

Design: Multi-center, retrospective cohort study.

Methods: We accrued a cohort of 226 eyes with DR consisting of 51 East Asian eyes, 102 South Asian eyes, 30 Caucasian eyes, and 43 Latino eyes, all evaluated with ultrawide field pseudocolor images.

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Purpose: To evaluate the impact of reducing the density of B-scans in an optical coherence tomography (OCT) volume on the sensitivity for detecting intraretinal hyperreflective foci (IHRF) in eyes with intermediate age-related macular degeneration (AMD).

Methods: A total of 165 eyes with intermediate AMD and IHRF were evaluated in this retrospective analysis. For each case, Cirrus HD-OCT volumes were imported into the reading center 3 D-OCTOR software.

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Purpose: To evaluate the correlation between fundus autofluorescence (FAF) and en face spectral-domain OCT (SD-OCT) measurements of geographic atrophy (GA) area associated with age-related macular degeneration.

Design: Retrospective, cross-sectional study.

Participants: Two hundred seventy eyes from 172 subjects with GA associated with age-related macular degeneration.

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Purpose: Retinal nonperfusion (RNP) is an important biomarker for diabetic retinopathy (DR). Data suggest that consistent anti-VEGF pharmacotherapy can slow RNP development. The RECOVERY trial evaluated the impact of aflibercept (Eylea, Regeneron) on RNP among eyes with proliferative DR (PDR).

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Importance: Change in areas of incomplete retinal pigment epithelium (RPE) and outer retinal atrophy (iRORA) within eyes with geographic atrophy (GA) might reflect similar changes among eyes with drusen but no GA.

Objective: To evaluate the potential association of pegcetacoplan with progression of iRORA in eyes with GA secondary to AMD.

Design, Setting, And Participants: This post hoc analysis of the phase 2 multicenter, randomized, single-masked, sham-controlled FILLY trial of intravitreal pegcetacoplan for 12 months took place from February 2 to July 7, 2020.

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Background/aims: OASIS is a Phase IIIb trial (NCT01429441) assessing long-term outcomes in subjects with symptomatic vitreomacular adhesion (VMA). The purpose of this study is to report on the frequency, severity, location and time course of ellipsoid zone (EZ) alterations in ocriplasmin-treated and sham control eyes in the OASIS study.

Methods: 220 patients (146 ocriplasmin, 74 sham) subjects with VMA were enrolled in this masked post hoc analysis phase IIIb, randomised, sham-controlled double-masked multicentre clinical trial.

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Purpose: To evaluate and compare the detection of incomplete and complete retinal pigment epithelial and outer retinal atrophy (iRORA and cRORA) using Spectralis and Cirrus optical coherence tomography (OCT) devices.

Methods: Subjects with late age-related macular degeneration were imaged on the same day with Spectralis and Cirrus OCT. Two, masked, independent, and experienced retina specialist graders evaluated each case for the presence of cRORA and iRORA lesions.

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Purpose: To evaluate the effect of subretinally transplanted human central nervous system stem cells (HuCNS-SC) on the progression of geographic atrophy (GA) in patients with nonneovascular age-related macular degeneration (AMD).

Design: Multicenter, prospective, phase 1 open-label clinical trial.

Participants: Fifteen patients with bilateral GA solely the result of AMD.

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Background And Objectives: To evaluate retinal sensitivity (RS) by mesopic and scotopic microperimetry (MP-1S) in an elderly Amish population with age-related macular degeneration (AMD).

Patients And Methods: Mesopic and scotopic microperimetric testing was performed in 148 eyes of 77 elderly Amish subjects (age > 50 years) from Pennsylvania using a retinal function analyzer. Scotopic testing was performed using a 2.

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Purpose: Evaluate the impact of intravitreal aflibercept (Eylea; Regeneron, Tarrytown, NY) on retinal nonperfusion (RNP) in eyes with proliferative diabetic retinopathy (PDR).

Design: Prospective, randomized clinical trial.

Participants: Eyes with treatment-naïve PDR and extensive RNP without diabetic macular edema.

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Purpose: To investigate the influence of baseline geographic atrophy (GA) size on the rate of GA progression by using both distance and area measurements.

Methods: Thirty-five eyes from 24 patients with GA due to age-related macular degeneration were obtained from anonymized datasets available at the Doheny Image Reading Center. Baseline and month 12 fundus autofluorescence (FAF) images were used for this analysis.

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Purpose: To evaluate the thickness of the outer retinal layers and its relationship with visual function in fellow eyes of participants with unilateral neovascular age-related macular degeneration (AMD).

Design: Longitudinal study.

Participants: We enrolled 105 subjects with unilateral neovascular AMD from 3 clinical centers in Europe.

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Purpose: Automated spectral domain optical coherence tomography (SD-OCT) segmentation algorithms currently do not perform well in segmenting individual intraretinal layers in eyes with Stargardt disease (STGD). We compared selective B-scan segmentation strategies for generating mean retinal layer thickness and preserved area data from SD-OCT scans in patients with STGD1.

Methods: Forty-five eyes from 40 Stargardt patients were randomly selected from the ongoing Natural History of the Progression of Atrophy Secondary to Stargardt Disease (ProgStar) study.

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Background And Objective: To evaluate the relationship between a novel spectral-domain optical coherence tomography (SD-OCT) parameter, predicted dry retinal volume (DRV), and visual acuity (VA) in subjects with diabetic macular edema.

Patients And Methods: Twenty-eight eyes of 26 subjects with macular edema secondary to diabetic retinopathy (cases) and 10 healthy eyes of normal volunteers (controls) were included. Spectral-domain optical coherence tomography volume scans (512 × 128) were obtained before and 6 months to 12 months after anti-vascular endothelial growth factor therapy.

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Purpose: To evaluate choroidal thickness in patients with non-ocular Behçet's disease (BD) using spectral domain optical coherence tomography (SD-OCT) and to compare the results to normal eyes.

Methods: In this retrospective observational comparative study, we collected OCT and clinical data from the charts of 4 patients (7 eyes) with BD who had been referred for a screening eye exam and had a normal ocular examination. Data from 9 healthy volunteers (17 eyes) were collected as age-matched controls.

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Purpose: The junctional zone at the border of areas of geographic atrophy (GA) in eyes with nonneovascular age-related macular degeneration is an important target region for future therapeutic strategies. The goal of this study was to perform a detailed classification and quantitative characterization of the junctional zone using spectral domain optical coherence tomography.

Methods: Spectral domain optical coherence tomography volume cube scans (Spectralis OCT, 1024 × 37, Automatic Real Time > 9) were obtained from 15 eyes of 11 patients with GA because of nonneovascular age-related macular degeneration.

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