Active clinical trials for "Diabetic Retinopathy"

Calcium dobesilate has been recommended to treat diabetic retinopathy due to its potential in protecting against retinal vascular damage. However, there was limited evidence exploring its efficacy in combating diabetic retinopathy progression. This study, a single-blind, multicenter, cluster-randomized, controlled superiority trial, was designed to evaluate whether calcium dobesilate could prevent diabetic retinopathy progression into an advanced stage among Chinese patients with mild to moderate non-proliferative diabetic retinopathy.

Objectives: Primary objective: To evaluate the effects on retinal morphophysiology of full scatter single target panretinal photocoagulation (PRP) versus full scatter multiple target panretinal photocoagulation (both combined with intravitreous injections of ranibizumab) versus intravitreous ranibizumab (IVR) alone in patients with proliferative diabetic retinopathy (PDR). Primary outcome: The primary endpoint for this study is the mean change in the total area of active retinal neovessels, as measured by fluorescein angiography leakage area, in mm2, from baseline to week 48. Secondary objectives: To assess the mean changes in best corrected visual acuity (BCVA), the mean changes in central subfield foveal thickness (CSFT), the mean changes in wave B amplitude and oscillatory potentials on a full-field electroretinogram (ERG), and the mean changes on the peripheral visual field by static perimetry (30:2 strategy), from baseline to week 48. To assess the incidence of adverse events during the study. Strategic goal: In the era of anti-VEGF treatment for retinal neovascularization 1, 2, 3, 4 , it is time to determine what would be the best association of PRP + anti-VEGF for proliferative diabetic retinopathy (PDR), or still, if just intravitreal anti-VEGF treatment would be even better regarding morphologic (new vessels area and CSFT) and functional parameters (BCVA, ERG response and visual field).

To determine the safety and efficacy of a single session of low-fluence panretinal photocoagulation when compared to full-fluence PRP. Hypothesis: a single-session of low-fluence PRP will be safe regarding the progression of macular edema and the presence of adverse events, and will efficiently induce regression of neovascularization.

Evaluation of ranibizumab on the ease and procedure and complication in proliferative diabetic retinopathy (PDR) requiring vitrectomy.

Lacunae in Knowledge No study is available in literature regarding visual field impairment in proliferative diabetic retinopathy comparing conventional double frequency Nd:YAG panretinal photocoagulation with PASCAL panretinal photocoagulation AIMS & OBJECTIVE To compare visual field impairment in conventional double frequency Nd: YAG panretinal photocoagulation with PASCAL panretinal photocoagulation. To examine the effect of these modalities of laser on macular edema 60 eyes of proliferative diabetic retinopathy will undergo humphery visual field analysis,and optical coherence tomography before and after panretinal photocoagulation

The purpose of this study is to measure effectiveness of yellow 577 nm laser compared to conventional green laser 532 nm for diabetic retinopathy in terms of number of treatment sessions required and visual acuity outcome. The study also compares pain score of patients receiving laser treatment and side effects of laser treatment.

Direct intravitreal administration of medication is the preferred method of treatment for uveitis and retinal vascular disorders. The eye is a self contained organ relatively isolated from the systemic circulation by the tight blood retinal barrier. Effective intraocular drug levels can be achieved with a much smaller amount of medication if injected intravitreally and this also results in minimal systemic exposure to the patient. Preliminary studies have shown that adalimumab may have a positive role in the management of uveitis in humans and can be an effective treatment intravitreally in animal models. No data has been published yet on intravitreal use of adalimumab in human subjects.

Injections of medicine into the middle of the eye (intravitreal injections) are commonly used in a multitude of retinal diseases. We are looking for new treatments that may be beneficial in treating retinal disease and improving patients' vision. Infliximab (Remicade) is a genetically engineered antibody against a molecule in the body called TNF-α. It neutralizes the effects of TNF-α by binding to it. Intravenous Infliximab has been used for inflammatory arthritic conditions and Crohn's disease since 1998. We do not know if infliximab injections into the eye are safe. We are performing this pilot study to determine if they can be safe.

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.

This study will investigate the clinical efficacy and safety of the PASCAL laser (PAttern SCAn Laser) for diabetic retinopathy. Patients with proliferative or severe nonproliferative retinopathy will be treated with panretinal photocoagulation utilizing different treatment strategies. The investigators believe that using "lower" laser parameters, the clinical response may be equivalent with less adverse effects.