Publications by authors named "Peter A Nixon"
Telemedicine for Diabetic Retinopathy Screening in an Urban, Insured Population Using Fundus Cameras in a Primary Care Office Setting.
Ophthalmic Surg Lasers Imaging Retina
November 2019
Background And Objective: This study examines the rate of adherence to recommended ophthalmology follow-up after primary care-based telemedicine diabetic retinopathy (DR) screening.
Patients And Methods: Retrospective observational study of 5,764 insured diabetic patients undergoing telemedicine DR screening between May 2015 and April 2017 in an urban primary care setting. Patients underwent non-mydriatic fundus photography for telemedicine DR screening.
Increasing food production in local urban and peri-urban areas is articulated as a potential way for local governments to achieve multiple sustainability outcomes (environmental, social, and human health). However, scientific judgements on localization are difficult to make because the degree of current food localization has not been systematically measured or defined across large numbers of cities. We develop new methods to quantify current local capacity for food production to meet total household agrifood demand, harmonizing bottom-up and top-down approaches to assess direct-plus-embodied agrifood demand of both fresh and processed foods.
View Article and Find Full Text PDFPurpose: To report the surgical management of a combined rhegmatogenous and traction retinal detachment associated with a vasoproliferative tumor secondary to sickle cell retinopathy.
Observations: A 29 year old man from Ghana presented with unilateral vision loss, ischemic retina and sea fan neovascularization in both eyes and a retinal detachment nearby a vasoproliferative tumor (VPT) in the left eye. Hemoglobin electrophoresis led to the diagnosis of sickle cell disease.
Purpose: Vitreomacular traction (VMT) syndrome can cause symptomatic metamorphopsia and decreased visual acuity. Although it is typically treated with vitrectomy or intravitreal ocriplasmin injection, these procedures can be invasive and costly. The purpose of this retrospective, consecutive case series was to evaluate the efficacy of intravitreal expansile sulfur hexafluoride gas injection for the treatment of symptomatic VMT syndrome.
View Article and Find Full Text PDFProliferative retinopathy as a complication of dyskeratosis congenita.
Retin Cases Brief Rep
November 2014
Objectives: To describe a patient with dyskeratosis congenita (DC) who developed retinal neovascularization (RNV) and discuss this novel association.
Methods: A 10-year-old boy with DC was referred for evaluation of possible retinal vascular disease. He underwent ophthalmologic examination, as well as fluorescein angiography.
Purpose: To evaluate the visual prognosis in eyes with branch retinal artery occlusion (BRAO).
Design: Retrospective, observational, consecutive case series.
Methods: Retrospective medical record review of 52 consecutive eyes of 52 patients with BRAO seen at two vitreoretinal practices in Birmingham, Alabama.
Purpose: To evaluate the clinical efficacy of transluminal YAG laser embolysis (TYE) for patients with severe vision loss secondary to a newly diagnosed branch retinal artery occlusion (BRAO) with visible emboli.
Methods: Five eyes of five patients with acute, severe vision loss secondary to a branch retinal artery occlusion with visible emboli and retinal whitening were prospectively examined, enrolled, and underwent visual acuity testing, ophthalmic examination, color photography, and fluorescein angiography. Each patient was offered TYE and the potential risks of the treatment were explained.
Purpose: To report the use of intravitreal bevacizumab (Avastin) as an adjunctive treatment for proliferative diabetic retinopathy (PDR).
Design: Retrospective case review.
Methods: Institutional review board approval to review patient data was obtained for this retrospective study.