Active clinical trials for "Diabetic Retinopathy"

The DRAGONS study is a non-interventional, prospective study that will characterize disease state biomarker (including cytokines, KKS metabolites, and cell adhesion molecules) levels from aqueous humor of subjects with various stages of diabetic retinopathy (DR) and diabetic macular edema (DME) as well as other retinal pathologies, and correlate a broad array of aqueous humor disease state biomarkers with DR severity, DME anti-vascular endothelial growth factor (VEGF) responsiveness, and other retinal pathologies.

Proliferative diabetic retinopathy (PDR) is the most common causes of irreversible blindness in diabetic retinopathy (DR).Intravitreal injection of anti-VEGF drugs is a good adjunct to vitreous surgery for severe PDR. Some studies have confirmed that the application of anti-VEGF drugs before vitrectomy for PDR patients can reduce the difficulty of surgery and improve postoperative best corrected visual acuity (BCVA), but very few researches focused on the injections of anti-VEGF during surgery.Therefore, investigators carry out this clinical trial to compare the effects of preoperative and intraoperative intravitreal injections of ranibizumab (IVR) on vitrectomy outcomes for PDR patients.One group receive ranibizumab injection (0.5mg/0.05ml) 3-5 days before vitrectomy. Another group receive ranibizumab injection (0.5mg/0.05ml) at the end of vitrectomy. Intraoperative and postoperative indices are collected for further comparison.Investigators enroll PDR patients whose baseline characteristics including age, sex, BMI, type of diabetes, HbA1c level, duration of DM, hypertension, previous history of laser photocoagulation, status of lens, indication for surgery, baseline BCVA, IOP, baseline CRT and extent of VAG are comparable.The enrolled eyes are randomly assigned according to the Central Randomization System with a ratio of 1:1 to preoperative IVR group and intraoperative IVR group. Intraoperative including surgery time, intraoperative bleeding, intraocular electrocoagulation use, iatrogenic retinal breaks, relaxing retinotomy and silicone oil tamponade, and postoperative indices including postoperative best-corrected visual acuity (BCVA), central retinal thickness (CRT), postoperative vitreous hemorrhage (VH), neovascular glaucoma (NVG), recurrent retinal detachment, postoperative fibrovascular proliferation progression and reoperationare collected for further comparison.

The purpose of the study is to determine whether concentrations of FOV2304 (high dose or low dose) administered in the eye are more effective than placebo in treating patients with diabetic macular edema, following 12 weeks of treatment.

The specific aims of the study are to test the following hypotheses: That there is a difference in change in visual acuity resulting from treatment with intravitreal bevacizumab compared with dexamethasone implant in eyes with advanced macular oedema That there is a difference in degree of resolution of macular oedema resulting from treatment with intravitreal bevacizumab compared with dexamethasone implant in eyes with advanced macular oedema That both intravitreal bevacizumab and dexamethasone implants have a manageable and acceptable safety profile in eyes with diabetic macular oedema

The purpose of this study is to evaluate the effects of panretinal photocoagulation plus intravitreal ranibizumab for the treatment of patients with high risk proliferative diabetic retinopathy in terms of changes in visual acuity and neovascularization area.

This 24 month randomized research study will evaluate whether doxycycline can slow the deterioration or improve retinal function among patients with mild to moderate non-proliferative diabetic retinopathy.

The purpose of the study is to find out if treatment with an intravitreal injection of triamcinolone or an intravitreal injection of ranibizumab can prevent loss of vision caused by panretinal photocoagulation treatment. At the present time, it is not known whether intravitreal steroid or anti-vascular endothelial growth factor (anti-VEGF) injections are beneficial in preventing vision loss after panretinal photocoagulation (PRP) treatment. It is possible that one or both of the types of injections will prevent vision loss after PRP treatment. However, it is not known whether the benefits of the injections will outweigh the risks. It is possible that because of side effects, the injections may not be as good as laser alone in treating the diabetic retinopathy.

To evaluate the efficacy of combination therapy with ranibizumab (RBZ) and panretinal photocoagulation (PRP) versus PRP alone in patients with treatment-naive bilateral proliferative diabetic retinopathy (PDR) as measured by mean change in visual acuity (VA), mean change in central retinal thickness (CRT) as measured by time-domain optic coherence tomography (TD-OCT) and incidence of vitreous hemorrhage (VH).

The purpose of this study is to determine the efficacy in the use of topical Squalamine Lactate Ophthalmic Solution, 0.2% in the treatment of retinal neovascularization resulting from proliferative diabetic retinopathy.

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.