Publications by authors named "Jared Knickelbein"

Objective: To identify characteristics and visual outcomes of coagulase-negative staphylococcal (CoNS) endophthalmitis in the era after the Endophthalmitis Vitrectomy Study.

Design: Single-centre retrospective analysis.

Participants: Forty-two samples from 40 patients with documented CoNS endophthalmitis.

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Background: To describe the incidence and factors predicting visual outcome in patients with infectious endophthalmitis following intravitreal anti-VEGF injection.

Methods: Retrospective, single-site, cohort study. Patients with acute endophthalmitis within 6 weeks of intravitreal anti-VEGF injection who were referred to our practice after inciting injection or were injected by us between January 2010 and July 2017 were included.

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Background: Retinal measurements correlate with disease progression in patients with multiple sclerosis; however, whether they associate with neurologic disease in people with controlled HIV is unknown. Using spectral domain optical coherence tomography, we evaluated retinal differences between people with HIV and HIV-negative controls and investigated clinical correlates of retinal thinning.

Methods: People with HIV on antiretroviral therapy for at least 1 year and HIV-negative controls recruited from the same communities underwent spectral domain optical coherence tomography, ophthalmic examination, brain MRI, and neuropsychological testing.

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Background: Due to the guarded prognosis of acute retinal necrosis (ARN), it is relevant to develop a strategy to early categorize those patients in a higher risk of worse outcomes. The purpose of this study is to describe clinical features and predictive factors for retinal detachment (RD) in patients with ARN.

Methods: Retrospective observational case series of 34 adult patients (38 eyes) with ARN examined between January 2005 and July 2015 in the National Eye Institute (Bethesda, USA), the Department of Ophthalmology, University of Chile (Santiago, Chile), and APEC (CDMX, Mexico).

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Purpose: To assess the diagnostic performance and generalizability of logistic regression in classifying primary vitreoretinal lymphoma (PVRL) versus uveitis from intraocular cytokine levels in a single-center retrospective cohort, comparing a logistic regression model and previously published Interleukin Score for Intraocular Lymphoma Diagnosis (ISOLD) scores against the interleukin 10 (IL-10)-to-interleukin 6 (IL-6) ratio.

Design: Retrospective cohort study.

Participants: Patient histories, pathology reports, and intraocular cytokine levels from 2339 patient entries in the National Eye Institute Histopathology Core database.

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: Aims to determine the variability of ffERG measurements in patients with clinically stable birdshot chorioretinopathy (BCR).: Repeatability coefficients (RC) of ffERG amplitudes and implicit times were calculated from 11 BCR patients. Jackknife resampling estimated 95% confidence intervals of each ERG parameter's RC and the percentage change explained by variability alone was calculated.

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Background/aims: To investigate the utility of using montaged optical coherence tomography (OCT) thickness maps to monitor perivascular thickness as a marker of vasculitic activity in patients with large-vessel retinal vasculitis.

Methods: This is a retrospective cohort study of 22 eyes of 11 patients with a history of retinal vasculitis associated with birdshot chorioretinopathy (BCR). Patients had serial spectral domain 6×6 mm cube OCT scans centred on the fovea, optic nerve and proximal branches of the superior and inferior retinal vessels.

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Purpose: To describe the clinical course of advanced juxtapapillary retinal capillary hemangioblastomas (RCH) associated with von Hippel-Lindau (VHL) disease treated with systemic sunitinib malate, an agent that inhibits both anti-vascular endothelial growth factor and anti-platelet-derived growth factor signaling.

Design: Observational case review.

Participants: Three patients with advanced VHL-related juxtapapillary RCH treated with systemic sunitinib malate.

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Purpose: To investigate the effectiveness of gradient boosting to classify endophthalmitis versus uveitis and lymphoma by intraocular cytokine levels.

Method: Patient diagnoses and aqueous and vitreous levels of interleukin (IL)-6 and IL-10 were retrospectively extracted from a National Eye Institute Histopathology Core database and compared by Kruskal-Wallis and post hoc Dunn tests. A gradient-boosted decision tree classifier was trained to differentiate endophthalmitis versus uveitis and lymphoma from vitreous IL-6 and IL-10, vitreous IL-6 only, and aqueous IL-6 only data sets; and was tested with 80-20 train-test split and 3-fold cross-validation of the training set.

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Introduction: Non-infectious uveitis encompasses a group of inflammatory eye diseases that can cause irreversible vision loss if left untreated or undertreated. In cases requiring stemic treatment, a step-wise treatment approach is often employed starting with corticosteroids for severe active disease, followed by initiation of steroid-sparing therapies to maintain inflammatory control and avoid the abundant complications of long-term corticosteroid use.

Areas Covered: We review the current high-quality evidence comparing the efficacy of various systemic steroid-sparing agents in the treatment of non-infectious uveitis.

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Uveitis encompasses a spectrum of diseases whose common feature is intraocular inflammation, which may be infectious or noninfectious in etiology (Nussenblatt and Whitcup 2010). Infectious causes of uveitis are typically treated with appropriate antimicrobial therapy and will not be discussed in this chapter. Noninfectious uveitides are thought have an autoimmune component to their etiology and are thus treated with anti-inflammatory agents.

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Purpose: To investigate whether wide-field multispectral scanning laser ophthalmoscopy could assist in determining depth of chorioretinal pathology in posterior uveitis.

Methods: Cross-sectional retrospective review of patients with birdshot chorioretinopathy (BCR; 42 eyes of 21 patients) or active primary vitreoretinal lymphoma (PVRL; 18 eyes of 10 patients) who had multispectral wide-field scanning laser ophthalmoscopy (Optos) images. Images acquired with 532 nm and 635 nm lasers were analyzed separately using Optos V Vantage Pro Review software.

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Purpose: To evaluate the safety and potential efficacy of gevokizumab, an anti-interleukin 1β (IL-1β) monoclonal antibody, in the treatment of active, noninfectious, non-necrotizing anterior scleritis.

Design: Phase 1/2, open label, nonrandomized, prospective, single-arm pilot trial.

Methods: Eight patients with active, noninfectious, non-necrotizing anterior scleritis with a scleral inflammatory grade of +1 to +3 in at least 1 eye were enrolled.

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Purpose: Extracellular vesicles (EV), such as exosomes, are important mediators of intercellular communication and have been implicated in modulation of the immune system. We investigated if EV released from retinal pigment epithelium (RPE) modulate immune responses in vitro.

Methods: Extracellular vesicles were isolated from ARPE-19 cultures stimulated or not with the inflammatory cytokines IL-1β, IFN-γ, and TNF-α.

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Diabetic retinopathy, a common and sight-threatening microvascular complication of diabetes mellitus, is a leading cause of blindness among working-aged adults. Medical therapies including intensive control of hyperglycemia and hypertension have been shown to reduce the incidence and progression of diabetic retinopathy. The association of dyslipidemia and treatment with statins with diabetic retinopathy is inconsistent in epidemiologic studies.

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The white dot syndromes encompass a group of rare posterior uveitis conditions that are characterized by outer retinal and/or choroidal hypopigmented lesions that are thought to be inflammatory in nature. The size, shape, and location of lesions in the fundus aid in differentiating these conditions. Multimodal imaging, including modalities such as fundus autofluorescence, optical coherence tomography, fluorescein angiography, and indocyanine green angiography, among others, has become integral in diagnosing and monitoring many of the white dot syndromes.

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Purpose: To describe the formation of a retinal pigment epithelial (RPE) tear following immunosuppressive treatment of a large choroidal granuloma in a patient with sarcoidosis-related panuveitis.

Methods: A 25-year-old woman presented with bilateral sarcoidosis-related panuveitis and optic disc edema in both eyes with a large choroidal granuloma temporal to the fovea in the left eye. High-dose oral prednisone therapy was given.

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Purpose: To test the association between elevated proportions of CD1c+ myeloid dendritic cells (mDCs) and disease activation/reactivation in noninfectious uveitis.

Methods: Noninfectious uveitis patients (n = 89) and healthy controls (n = 111) were recruited. The proportion of CD1c+ mDCs in the total dendritic cell (DC) population of peripheral blood was measured by flow cytometry (CD1c+ mDCs gated on Lineage 1+HLADR+ DCs).

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Purpose: The "high-risk phenotype" of corneal graft recipients is considered to be related to preexisting vascularization such as that associated with herpes simplex virus-1 (HSV-1) keratitis (HSK). The purpose of this study was to investigate the immunologic mechanisms underlying accelerated corneal graft rejection using a mouse model of HSK.

Methods: Herpes simplex virus type 1 keratitis was induced in BALB/c mice.

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Purpose: To determine the intravisit and interobserver reproducibility of subfoveal choroidal thickness (SFCT) measurements in patients with noninfectious uveitis.

Design: Reliability analysis.

Methods: Two consecutive enhanced depth imaging optical coherence tomography (EDI-OCT) scans were obtained at a single clinic visit for 97 uveitic eyes from patients ≥16 years of age with noninfectious anterior (n = 10), intermediate (n = 11), posterior (n = 26), and panuveitis (n = 13) at the National Eye Institute.

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Memory stem T cells (TSCMs) constitute a long-lived, self-renewing lymphocyte population essential for the maintenance of functional immunity. Hallmarks of autoimmune disease pathogenesis are abnormal CD4(+) and CD8(+) T cell activation. We investigated the TSCM subset in 55, 34, 43, and 5 patients with acquired aplastic anemia (AA), autoimmune uveitis, systemic lupus erythematosus, and sickle cell disease, respectively, as well as in 41 age-matched healthy controls.

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The treatment of noninfectious uveitis continues to remain a challenge for many ophthalmologists. Historically, clinical trials in uveitis have been sparse, and thus, most treatment decisions have largely been based on clinical experience and consensus guidelines. The current treatment paradigm favors initiation then tapering of corticosteroids with addition of steroid-sparing immunosuppressive agents for persistence or recurrence of disease.

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Unlabelled: We report 4 cases of acute corneal edema with subsequent thinning and hyperopic shift following routine selective laser trabeculoplasty (SLT) for the treatment of primary open-angle glaucoma. Four women from 3 clinical sites developed acute corneal edema and haze within 2 days of uneventful SLT. In the following weeks to months, all treated corneas thinned to below pre-procedure thicknesses with resultant hyperopic shifts of nearly 2.

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