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Panretinal photocoagulation (PRP) has been the standard treatment for Proliferative diabetic retinopathy (PDR) since the Diabetic Retinopathy Study demonstrated its benefit nearly 40 years ago,but PRP has inevitable adverse effects on visual function. Intravitreal injection of vascular endothelial growth factor(VEGF) can induce short-term regression of retinal neovascularization(NV). The purpose is to assess and compare the efficacy and safety between intravitreal injection of conbercept and PRP.
Proliferative diabetic retinopathy (PDR) is a leading cause of vision loss in patients with diabetes mellitus,which of the initial manifestation of PDR is retinal neovascularization at the disc or elsewhere.Panretinal photocoagulation (PRP) has been the standard treatment for PDR since the Diabetic Retinopathy Study demonstrated its benefit nearly 40 years ago,but PRP has inevitable adverse effects on visual function including peripheral visual field defects, night vision loss, loss of contrast sensitivity.Recent evidences have indicated that anti-vascular endothelial growth factor(VEGF) treatment can reduce the severity and delay the progression of DR.However,the impact of this treatment on visual function and the effect of anti-VEGF agents on retinal neovascularization compared with PRP remain unclear. It is possible that a long-acting anti-VEGF agent such as conbercept. So we design the study with is a prospective randomized controlled trial about Intravitreal injection of conbercept versus PRP on PDR.Primary outcome is the change in BCVA from screening to 12 months in the study eye measured in the ETDRS letter score at 4 m
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Treatment
Proliferative Diabetic Retinopathy
intravitreal injection of conbercept, PRP
Zhongshan Ophthalmic Center, Sun Yat-sen University
Active, not recruiting
Sun Yat-sen University
Published on BioPortfolio: 2016-09-22T20:53:28-0400
To evaluate the safety and efficacy of intravitreal conbercept after vitrectomy for the management of early-stage proliferative diabetic retinopathy (PDR). Hypothesis: intravitreal conber...
Recently, intravitreal bevacizumab (Avastin) injection has gained popularity as a potential treatment of intraocular neovascularization (CNV) associated with age related macular degenerati...
Certain percent of the eyes with proliferative diabetic retinopathymay require pars plana vitrectomy (PPV) due to vitreous haemorrhage, proliferative membrane, and tractional retinal detac...
The purpose of this study is to evaluate the role, the safety and the effectiveness of Intravitreal Bevacizumab injections as an adjunct to vitrectomy in the management of severe prolifera...
To evaluate the fluorescein angiographic and visual acuity effects of a single intravitreal injection of ranibizumab for the management of persistent new vessels associated with diabetic r...
To evaluate the changes in aqueous concentrations of inflammatory cytokines and fibrosis-related factors, and to detect the expression of vascular endothelial growth factor (VEGF) and proliferating ce...
To evaluate the safety and efficacy of intravitreal conbercept (IVC) injection in the treatment of retinopathy of prematurity (ROP).
To compare anatomic and functional outcomes in eyes with proliferative diabetic retinopathy (PDR) that were lost to follow-up (LTFU) for more than 6 months after treatment with either intravitreal inj...
Diabetic retinopathy is a vascular disease of the retina characterised by hyperglycaemic and inflammatory processes. Most animal models of diabetic retinopathy are hyperglycaemia-only models that do n...
Present rationale, guidelines, and results of ranibizumab treatment for proliferative diabetic retinopathy (PDR) in Diabetic Retinopathy Clinical Research Network (DRCR.net) Protocol S.
A drug used to reduce hemorrhage in diabetic retinopathy.
Removal of the whole or part of the vitreous body in treating endophthalmitis, diabetic retinopathy, retinal detachment, intraocular foreign bodies, and some types of glaucoma.
Disease of the RETINA as a complication of DIABETES MELLITUS. It is characterized by the progressive microvascular complications, such as ANEURYSM, interretinal EDEMA, and intraocular PATHOLOGIC NEOVASCULARIZATION.
Aneurysm of the MICROVASCULATURE. Charcot–Bouchard aneurysms are aneurysms of the brain vasculature which is a common cause of CEREBRAL HEMORRHAGE. Retinal microaneurysm is an early diagnostic sign of DIABETIC RETINOPATHY.
Vision considered to be inferior to normal vision as represented by accepted standards of acuity, field of vision, or motility. Low vision generally refers to visual disorders that are caused by diseases that cannot be corrected by refraction (e.g., MACULAR DEGENERATION; RETINITIS PIGMENTOSA; DIABETIC RETINOPATHY, etc.).
Diabetes is a lifelong condition that causes a person's blood sugar level to become too high. The two main types of diabetes are: type 1 diabetes type 2 diabetes In the UK, diabetes affects approximately 2.9 million people. There are a...