Active clinical trials for "Diabetic Retinopathy"

The purpose of this study is to evaluate possible mechanisms of central visual loss in patients with diabetes mellitus. The visual loss of interest to be investigated is that associated with macular edema (prior to and following laser photocoagulation treatment) and that associated with panretinal photocoagulation. The evaluation will be performed with psychophysical testing, i.e., static perimetry and contrast sensitivity function. Of particular interest, the mechanisms of visual loss associated with macular edema (prior to and following laser photocoagulation) will be further investigated. Photoreceptor-mediated visual loss will be assessed by measurements of the Stiles-Crawford effect. Visual loss mediated by post-receptoral retinal changes will be assessed by measuring the Westheimer spatial desensitization/sensitization effect.

Given the high number of people with DMO and PDR, the need for patients to be seen at short follow-up intervals, the need for frequent treatments and the requirement for long-term follow-up, there is a very large workload in Hospital Eye Services related to DMO/PDR which is making it difficult for the NHS to cope with the demand, in particular, due to shortage of ophthalmologists. This is only expected to get worse given the increasing prevalence of DM. Identifying new ways of increasing the NHS capacity and efficiency without compromising the quality of care would greatly benefit the NHS. The purpose of this study is to determine whether successfully treated patients with DMO and PDR could be followed up without a face-to-face examination by an ophthalmologist. EMERALD will evaluate a new care pathway which will include multimodal retinal imaging and separate image assessment by trained ophthalmic graders. This new pathway will be compared to the current standard care pathway: for DMO: ophthalmologist evaluating patients in clinic by slit-lamp biomicroscopy and with access to OCT images; for PDR ophthalmologists evaluating patients in clinic by slit-lamp biomicroscopy. EMERALD will compare how accurate the new pathway is at determining which patients have active or inactive disease. The costs and acceptability of current and new models of care will also be compared.

This study analyzed diabetic patients without evidence of glaucoma who underwent panretinal photocoagulation to determine the effect on optic disc topographic parameters in non-glaucomatous patients with proliferative diabetic retinopathy (PDR).

Diabetic macular edema (DME) is the most common cause of vision loss in diabetic patients. While anti-VEGF treatments and to a lesser extent corticosteroid and macular photocoagulation have improved outcomes in patients with DME, no single therapy is universally effective and currently there is no a priori means of determine which patients will respond best to any given therapy. The purpose of this study is to determine whether specific parameters of ocular imaging studies including optical coherence tomography and fluorescein angiography can predict response to treatment in patients with DME. This is a prospective observational cohort study that will collect clinical data and imaging studies obtained as standard of care. Up to 150 subjects with clinically significant DME will be enrolled at Duke Eye Center or its satellite offices. These imaging studies will be analyzed to determine whether specific parameters are associated with poor or favorable response to specific treatments. There will be no intervention as part of this observational trial, thus the primary risk to subjects is loss of confidentiality, which will be minimized by the study team.

The main objectives of this observational study were to describe outcomes, monitoring and treatment patterns of patients with diabetic macular edema in routine clinical practice who are either treatment naïve patients or previously treated patients. The total study population was evaluated as well as the two subgroups (previously treated patients and treatment naïve patients). This study was designated to answer French Health Authority (HAS Haute Autorité de Santé) requirements.

Diabetes mellitus is a leading cause of death and disability. Diabetic Retinopathy (DR) is an eye disease that affects the eyesight of about 21.3% persons with diabetes in Bangladesh in a way that is irreversible because of the nature of the disease. According to International Diabetes Federation Diabetes Atlas (5th Edition), in 2011 there were approximately 8.4 million people in the age bracket 20-79 suffering from diabetes in Bangladesh, and this number is projected to double to 16.8 million by 2030. Based on these statistics, and also according to a nationally published report, the number of persons with DR is estimated to be about 1.8 million in Bangladesh. Taking measures to delay vision loss in persons with diabetes is more cost-effective than its treatment. Timely and effective referral of DR cases to an Ophthalmologist is very important in the prevention of this disease. The objective of this study is to identify reasons of DR referral procedure compliance and non-compliance among registered persons with diabetes in a diabetic clinic and recommend effective strategies to enhance the referral system. The first phase of study is cross-sectional. Second phase of study is a Randomized Controlled Trial (intervention group to receive home-based health education and control group to receive standard care). It is expected that the number of registered persons with diabetes of Barishal DAB hospital who were referred to an Eye Consultant at a tertiary hospital from September 2017 - August 2018 will be N=300. All 300 participants will be eligible for inclusion in the first phase of the study. This group (est. N=300) will be categorized into compliant (est. N=120) and non-compliant participants (est. N=180). Both groups will be interviewed to understand motivation factors for compliance and de-motivation factors for non-compliance. In the second phase of the study, the non-compliant group will be categorized further into intervention and control groups following Randomization. The intervention group will receive relevant health education messages on Diabetic Retinopathy and information about the days and times when eye care services are provided at the tertiary hospital (i.e. service availability information). They will be provided with telephonic reminders at Days 7, 30 and 90 after the health education. Then, after a gap of one month from the last telephonic reminder, both control and intervention groups will be interviewed again. In this way this study will conclude whether the health education intervention is an effective way of improving compliance rate of referred DR persons. All questionnaires will be pre-tested in the study location. All participants will have to sign a detailed Bengali informed consent form. SPSS software will be used for data entry and analysis. Multiple Logistic Regression, along with other tests, will be used to identify variables that significantly influence successful referrals.

This study will determine whether certain factors in the blood are associated with the severity of diabetic retinopathy. Patients age 10 years and older with diabetes mellitus and diabetic retinopathy may be eligible for this study. Those enrolled will represent a range of diabetic retinopathy from minimal to severe. Participants will undergo the following procedures: medical history thorough eye examination photographs of the eye blood tests to measure blood lipids (cholesterol and triglycerides) and serum creatinine (for kidney function) blood tests to measure levels of blood factors (cell adhesion molecules, chemokines and vascular endothelial growth factor) that may be related to the progression of diabetic retinopathy blood pressure measurement urinalysis This study may lead to a better understanding of how diabetic retinopathy develops and progresses.

This study evaluates micro-vascular changes in patients with diabetes. Results of diseased retinas will be compared to healthy controls.

Our hypothesis is that implementing laser photocoagulation (IGTL) as an adjunctive treatment to intravitreal injections should lead to a significant reduction in the need for intravitreal injections in patients with diabetic macular edema without adverse consequences for visual acuity.

Diabetic retinopathy(DR) is one of the most common and serious microvascular complications of diabetes,which is the primary cause of vision loss of diabetic patients. The risk of blindness is 25 times that of healthy people.Fundus fluorescein angiography (FFA) is the gold standard for diagnosing the stage of diabetic retinopathy.However,FFA is an invasive examination which requires the patient to be in good physical condition and is not suitable for large-scale screening.Therefore, it is important to build up an evaluation system for early diagnosis of DR,which is more convenient, safer, and non-invasive.Firstly, this study will retrospectively analyze the FFA images of DR to find the earliest and most frequently occurring fundus quadrant.Secondly,based on the retrospective analysis results, a prospective comparative study will be conducted,which combines the fundus photography with optical coherence tomography angiography(angio-OCT) and physical indicators to find out whether it has consistency, sensitivity and specificity with FFA in diagnosing the stage of DR in order to build up a more effective,safer and faster evaluation system and clinical application for DR.