View clinical trials related to Diabetic Retinopathy.
Filter by:The purpose of this study is to determine the clinical application of advanced ophthalmic imaging devices such as optical coherence tomography (OCT), retinal function imager (RFI), slit-lamp biomicroscopy (SLB), PERG in diseased eyes and normal controls. There are two phases in this study. The first phase is an observational phase which studies the eye in various conditions. The second phase is an interventional phase which studies the changes in the eyes after taking an over-the-counter medical food (Ocufolin) for 6 months.
Retinal nonperfusion drives vision-threatening complications such as pathological neovascularization, which can lead to neovascular glaucoma, vitreous hemorrhage, or tractional retinal detachments and macular edema in diabetic retinopathy. Thus, decreasing nonperfusion area with aid of anti-VEGF agents might be a useful way to prevent deteriorating course of diabetic retinopathy. The main purpose of this study is to determine the efficacy of intravitreal aflibercept injection in improvement of retinal nonperfusion and identify associated factors in patients with nonproliferative diabetic retinopathy with moderate retinal nonperfusion.
This is a phase I/II open label, randomized, interventional clinical trial. Study eyes will receive one preoperative intravitreal aflibercept injection (IAI) <21 days but >7 days prior to vitrectomy and one intraoperative IAI at end of surgery followed by randomization in a 1:1 ratio into either 4 mandatory postoperative q4weeks IAI followed by mandatory q8 weeks IAI for 52 weeks follow-up (q8 week Group) or 2 mandatory postoperative q4weeks IAI followed by mandatory q16 weeks IAI for 52 weeks follow-up (q16 week Group).
To compare immediate laser pan-retinal photocoagulation (PRP) treatment of severe or very severe non proliferative diabetic retinopathy (NPDR) stage versus deferral of treatment until the appearance of any proliferative diabetic retinopathy (PDR) in rural and urban patients in China. Interview data from some patients and survey data from ophthalmologists in the study hospitals will help determine acceptability of early treatment, and how to overcome barriers to increased use of this option.
Diabetic retinopathy (DR) is an important cause of blindness.
Background/aims: Aflibercept is an approved therapy for neovascular macular degeneration (AMD), diabetic macular edema (DME), retinal vein occlusion and other retinal conditions. Ziv-aflibercept is also approved by FDA and is extremely cost-effective relative to the expensive same molecule aflibercept. In vitro and in vivo studies did not detect toxicity to the retinal pigment epithelium cells using the approved cancer protein, ziv-aflibercept. Ziv-aflibercept had no loss of anti-VEGF activity when kept at 4°C in polycarbonate syringes over 4 weeks. Similar to bevacizumab, compounded ziv-aflibercept would yield a tremendous saving compared to aflibercept or ranibizumab. Phase I studies and case reports did not report any untoward toxic effects but attested to the clinical efficacy of the medication. Our purpose is to ascertain the long-term safety and efficacy in various retinal diseases of intravitreal ziv-aflibercept. Methods: Prospectively, consecutive patients with retinal disease that require aflibercept (AMD, DME, RVO, and others) will undergo instead the same molecule ziv-aflibercept intravitreal injection of 0.05 ml of fresh filtered ziv-aflibercept (1.25mg). Monitoring of best-corrected visual acuity, intraocular inflammation, cataract progression, and retinal structure by spectral domain OCT to be done initially, one month, 6 months, 1 year, and 2 years after injections. Anticipated Results: Analyze signs of retinal toxicity, intraocular inflammation, or change in lens status, together with best corrected visual acuity and central foveal thickness at 1 month, 6 months, 1 year and 2 year. Anticipated Conclusions: Off label use of ziv-aflibercept improves visual acuity without ocular toxicity and offers a cheaper alternative to the same molecule aflibercept (or lucentis), especially in the third world similar to bevacizumab.
Proliferative diabetic retinopathy(PDR) is the leading cause of visual loss in diabetic patients. Operation is an efficient method to treat PDR. Anti-vascular endothelial growth factor (anti-VEGF) can be used as an adjuvant therapy which can make operation more easy.
Microalbuminuria (MA) is an independent cardiovascular risk factor in diabetic and non-diabetic subjects. However, in the setting of type 2 diabetes, microalbuminuria could be a marker of either early diabetic nephropathy or diffuse endothelial dysfunction. At present, there are no biomarkers that permit us to discriminate between these two conditions.
The aim of this study is to investigate the conjunctival bacterial flora and antibiotic resistance patterns following serial intravitreal injections of anti-VEGF in diabetic patients, using a povidone-iodine preparation without preinjection or postinjection topical antibiotics.
Proliferative diabetic retinopathy(PDR) is the leading cause of visual loss in diabetic patients. Operation is an efficient method to treat PDR. Anti-vascular endothelial growth factor (anti-VEGF) can be used as an adjuvant therapy which can make operation more easy.