Publications by authors named "John R Gonder"

Objective: Suboptimal diabetic eye disease screening is a major cause of preventable vision loss. Screening barriers include mydriasis and the need for dedicated screening appointments. The Clearsight trial assessed whether nonmydriatic ultra-widefield (NM UWF) screening on the day of a diabetes clinic visit improved detection of clinically important eye disease versus usual screening.

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Objective: To assess the efficacy of intravitreal aflibercept in treating visual loss and structural changes in patients with pigment epithelial detachments (PED) secondary to neovascular age-related macular degeneration (nAMD).

Methods: Prospective, exploratory, open-label study (ClinicalTrials.gov Identifier: NCT02142296).

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Introduction: Suboptimal screening for diabetic eye disease is a major cause of preventable vision loss. Screening barriers include mydriasis and the extra time patients need to attend dedicated eye screening appointments. In the Clearsight trial, we are testing whether screening by non-mydriatic ultra-wide field (NM UWF) imaging on the day patients attend their diabetes outpatient clinic visit improves detection of clinically important eye disease compared with usual screening.

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Introduction: VKH disease is a chronic, bilateral, granulomatous panuveitis with potential involvement of neurological, auditory and integumentary systems. On the other hand, APMPPE is believed to be an immune-driven chorioretinal vascular disease characterized by multifocal, flat, grey-white placoid lesions at the level of the RPE. We describe a case with overlapping figures of both conditions.

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Purpose. To characterize the economic and quality of life burden of diabetic macular edema (DME) in Canadian patients. Patients and Methods.

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Purpose: To compare the in vitro effect of a single brief indocyanine green (ICG) exposure with a double exposure on retinal pigment epithelial (RPE) cells.

Design: In vitro laboratory experimental study.

Methods: Human ARPE-19 cells were exposed to a single dilute ICG exposure (0.

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Purpose: Macular schisis or detachment is frequently observed in eyes with optic pits or colobomas. Although spontaneous resolution of the maculopathy has been reported, concurrent changes in the optic nerve coloboma have not. We report three cases of atypical optic nerve colobomas in which dynamic optic nerve changes coincide with the development and subsequent resolution of the associated maculopathy.

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Fibronectin (FN), a key extracellular matrix protein, is upregulated in target organs of diabetic angiopathy and in cultured cells exposed to high levels of glucose. FN has also been reported to undergo alternative splicing to produce the extra domain-B (ED-B) containing isoform, which is exclusively expressed during embryogenesis, tissue repair, and tumoral angiogenesis. The present study was aimed at elucidating the role and mechanism of endothelins (ETs) in FN and ED-B FN expression in diabetes.

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Purpose: To compare the in vitro toxicity of indocyanine green (ICG) to that of trypan blue (TB) in human retinal pigment epithelium cell cultures. The use of ICG and TB in macular hole surgery is discussed.

Design: In vitro cell biology experimental study.

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Purpose: Imbalance between extracellular matrix protein synthesis and degradation is a key feature of diabetic retinopathy. Fibronectin, a predominant constituent of the extracellular matrix, has been shown to undergo alternative splicing to produce embryonic isoforms in various pathologic conditions, such as fibrotic diseases and tumorigenesis. Two such isoforms, oncofetal fibronectin variants that are characterized by the inclusion of the oncofetal domains A and B, were the focus of the present study.

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