View clinical trials related to Diabetic Retinopathy.
Filter by:The purpose of this study is to determine the threshold level of proliferative diabetic retinopathy progression and regression after standard panretinal photocoagulation. Predictors of progression and regression will be identified which will include retinal vessel geometry (caliber, fractals and tortuosity), retinal vessel oxygen saturation and retinal areas of non-perfusion.
Proliferative diabetic retinopathy is a serious complication of diabetes mellitus, partly consecutive to upregulation of vascular endothelial growth factor (VEGF) as a consequence of retinal ischemia leads. Aflibercept has been approved by FDA and European medicine agency for treatment of exudative age-related macular degeneration, another retinal disease characterized by choroidal new vessels. The aim of this pilot study is to evaluate the efficacy and the safety of Aflibercept intravitreal injections compared to panretinal photocoagulation for proliferative diabetic retinopathy.
The administration of short courses of topical antibiotic drops before and/or after intravitreal injections is a common practice, but increasing evidence suggests this may not lower the risk of infectious endophthalmitis and could increase rates of antimicrobial resistance. The purpose of the present study is to determine the antimicrobial resistance profiles in patients who have received numerous (≥ 20) courses of antibiotics for intravitreal injection compared with untreated controls. This study compares 20 control patients without prior intravitreal injection to 20 patients who have undergone ≥ 20 prior intravitreal injections accompanied by a course of topical antibiotics for two days before and/or after the injection procedure. The lower, inner eyelid and nasal cavity were cultured and evaluated via disk diffusion method for antimicrobial sensitivity.
In this feasibility/pilot study, we will develop, refine, and evaluate the feasibility of a novel mental health/ophthalmologic intervention called, "Collaborative Care for Depression and Diabetic Retinopathy" (CC-DDR), which aims to treat depression and lower HbA1C in older African Americans with mild-to-moderate diabetic retinopathy (DR) and comorbid depression.
Diabetic retinopathy is the leading cause of blindness in the developed world. The causes of the disease are poorly understood. One of the earliest changes that occur in the retinas of diabetic patients, well before overt retinopathy is observed, is a reduction in light-evoked increases in blood flow in retinal vessels. The loss of this vascular response may lead to retinal hypoxia and it has been suggested that hypoxia could be a principal cause of diabetic retinopathy. The long-term goals of this project are to determine whether decreased blood flow in diabetic patients and the resulting retinal hypoxia contributes to the development of diabetic retinopathy and whether restoration of normal blood flow in diabetic patients slows or prevents the development of retinopathy.
Ultra-wide field fluorescein angiography can detect the response of anti VGEF therapy such as Avastin on retinal ischemia in the setting of diabetic macular edema.
The aim of this study is to compare the effectiveness of identifying diabetic retinopathy using tele-medicine based Digital Retinal Imaging in Diabetes Clinics with that of the conventional referral system. Hypothesis: Tele-medicine based digital retinal imaging involving a diabetes centre will identify proportionately more diabetic patients with DR and lead to higher acceptance rate with subsequent ophthalmic referral and management
The pathogenesis of proliferative diabetic retinopathy (PDR) remains poorly understood. Recent studies have implicated that monocyte chemoattractant protein-1 (MCP-1) is associated with diabetic microvascular or macrovascular complications. However, the relationship between SNP polymorphism c.2518A/G in the MCP-1 gene with diabetic retinopathy remains controversial. In the present study, we evaluated the association of a single nucleotide polymorphism (SNP) in the MCP-1 gene with diabetic retinopathy (DR) and diabetic macular edema (DME) in Chinese population from Southern China with type 2 diabetes.
The purpose of this study is to evaluate the efficacy of ubiquinone and combined antioxidant therapy on progression, clinical regression, oxidative stress markers and mitochondrial dysfunction in non-proliferative diabetic retinopathy.
This is a prospective, multicenter, randomized, double blind, placebo-controlled and a prospective observational study. This study will be conducted at 15 study centers in various European countries. 1777 participant between 18 to 75 years old with Type 2 diabetes mellitus and normoalbuminuria participate in the study. The study period is 2 - 4.5 years (excluding the 6 week screening period). Depending on the risk score of the urinary protein pattern, participants have been stratified into an observational group or an interventional group. Participants with the low risk pattern (observational group) attend visits annually after screening and baseline. Participants with the high risk pattern (interventional group) attend study visits every 13 weeks after screening and baseline. The interventional group has been allocated into one treatment group either receiving spironolactone or placebo. A placebo is a medicine without a pharmaceutical substance. The allocation to one of the two treatment groups has been done by a random distribution procedure established before the study start. The results of the urine sample from the Screening visit has been analysed and the urine proteomic pattern is determined to be either low- or high risk pattern and will determine the further study program. Participants with a low-risk pattern (observational group): During the study period, participants attend an annual project visit, were regular diabetes care is performed and three urine samples are analysed for albuminuria. Participants with a high-risk pattern (intervention group): Participants with a high-risk pattern have been randomized to either spironolactone treatment or placebo. The treatment is one tablet for oral use to be taken once a day for the entire study period. Four times each year (every 13th week) a study visit is conducted including examination of three urine samples for albuminuria. This study aims to: 1. Confirm in a prospective multicenter study of normoalbuminuric type 2 DM patients that the urinary proteome test identifies patients with a high risk for development of microalbuminuria. 2. Demonstrate the clinical utility of the test by showing that aldosterone blockade in high-risk patients can reduce progression to microalbuminuria in comparison to placebo, on the top of standard treatment in a randomized double-blind, placebo-controlled multicenter study.