View clinical trials related to Diabetic Retinopathy.
Filter by:The pilot study evaluates the efficacy and safety of Canakinumab (ILARIS®) in subjects with proliferative diabetic retinopathy secondary to type 1 and 2 diabetes. Ten subjects will be enrolled to receive 150 mg Canakinumab (ILARIS®) by subcutaneous injection. Beginning on day 0, each subject will receive a subcutaneous injection of study drug every 8 weeks for 16 weeks, a total of 3 injections. All subjects will undergo regular follow-up assessments every 8 weeks through 24 weeks. Fluorescein angiography (FA) is repeated every 8 weeks. In case of progression of retinal neovascularization on FA panretinal laser photocoagulation is administered as rescue therapy. The primary outcome is the regression of retinal neovascularizations (NVE and NVD) in FA at 24 weeks. In addition to key secondary outcomes including regression of diabetic macular edema, change in best-corrected visual acuity, change in HbA1c levels and change in markers of systemic inflammation. Safety will be assessed by measurements of vital signs, clinical laboratory assessments, and the recording of adverse clinical events.
Studies conducted assessing diabetic eye disease have shown a progression of diabetic retinopathy with rapid improvement of glycemic control during pregnancy and in patients with type 1 diabetes. It is also well documented that bariatric surgery may result in rapid improvement of glycemic control in obese patients with type 2 diabetes. To our knowledge the progression of diabetic eye disease seen in pregnancy and type 1 diabetes has not been studied in obese type 2 diabetics undergoing bariatric surgery. To this end, this study will examine the effects of rapid glycemic control which is seen in type 2 diabetics following bariatric surgery on the progression of diabetic retinopathy.
The prevalence of diabetes is increasing and the management of the disease is nowadays considered a major challenge. Affected patients have increased mortality and morbidity as well as a significant drop in the quality of life. The complications of diabetes can be classified as microvascular (e.g. nephropathy, neuropathy or retinopathy) or macrovascular (e.g. cardiovascular or cerebrovascular). Several large-scale epidemiologic studies indicating that wider retinal venous caliber is strongly associated with the fasting glucose level as well as with diabetes. Another retinal vascular abnormality that is associated with diabetes is an abnormal retinal vascular response to flicker stimulation. Retinal vessel dilatation in response to stimulation with diffuse flicker light occurs due to a phenomenon called neurovascular coupling. This means that increased activity of neurons is associated with an increased retinal metabolism. This leads to a release of endogenous vasodilator substances and increased blood flow. However, previous studies were limited by the fact that retinal vessel diameters and blood flow were not measured simultaneously. The present study aims to investigate whether the response of retinal vessel diameters and blood flow velocities to flicker stimulation is altered in patients with diabetes. Both parameters will be measured in real time using Fourier Domain Doppler OCT.
To evaluate the effects of Trientine Hydrochloride in prevention of post-laser (pan-retinal photocoagulation) macular edema in the eyes for subjects with diabetic retinopathy. Trientine hydrochloride can limit secondary inflammatory damage to retinal vessels following the administration of pan-retinal photocoagulation therapy for severe non-proliferative diabetic retinopathy or retinal neovascularization due to diabetic retinopathy, resulting in less macular edema and improved visual outcomes.
Background: - Diabetic macular edema (DME) is a common condition in people with diabetes. DME occurs when blood vessels in the eye leak fluid, resulting in swelling inside the back of the eye and progressive vision loss. Research has shown that good blood sugar control can reduce the risk and severity of DME. However, not all diabetic patients with poor blood sugar control develop DME, and some patients develop DME despite excellent blood sugar control. This suggests that other factors, such as genes or inherited traits, may predispose or protect a diabetic patient from developing DME. Objectives: - To investigate genetic factors that may influence the development of diabetic macular edema. Eligibility: - Individuals at least 18 years of age who have type 2 diabetes, with or without diabetic macular edema. Design: - The study will require one visit to the National Institutes of Health eye clinic. - Participants will be screened with a medical history and basic eye examination. Individuals who have certain eye diseases other than DME may not be allowed to enroll in the study. - Participants will provide a blood sample, and will receive fluorescein angiography (an injection of fluorescein dye, after which a camera will take pictures of the dye as it flows through the blood vessels in the eye). - No treatment will be provided as part of this protocol.
Is it possible to do a panretinal photocoagulation for proliferative diabetic retinopathy in a single session using low fluence parameters?
The purpose of this study is to evaluate NEVANAC in patients with diabetic retinopathy who developed macular edema (ME) within 90 days following cataract surgery.
There is much evidence that localized low grade inflammatory processes may contribute to the microvascular complications of type 1 and type 2 diabetes mellitus including sight-threatening diabetic retinopathy. Some biomarkers for inflammation have been found to be elevated in diabetes patients and correlations between those biomarkers and the severity of diabetic complications have been found in the last years. The relation between this low grade inflammation and the microvascular changes observed in diabetic retinopathy is, however, not well characterized. In the present study patients with different stages of non-proliferative diabetic retinopathy will be included. Several markers of inflammation will be measured from blood samples. These markers will be related to vascular factors including flicker-induced vasodilatation as a marker of endothelial dysfunction and perifoveal leukocyte velocity and density as measured with the blue field entoptic phenomenon. In addition, the ophthalmologic status of the patients will be assessed according to the Modified Airlie House classification. A multiple regression model will be employed to study the association between the different methods.
The used of reduced fluence parameters for panretinal photocoagulation decreases pain as perceived by the patient, compared to traditional parameters.
The purpose of this study is to evaluate the optic nerve head changes consequent to panretinal photocoagulation done for diabetic retinopathy.