View clinical trials related to Retinal Vein Occlusion.
Filter by:The primary objectives of the study are to evaluate the safety and effect of KPI-121 0.25% ophthalmic suspension and KPI-121 1.0% ophthalmic suspension on intraretinal or subretinal fluid secondary to Retinal Vein Occlusion or Diabetic Macular Edema.
The authors investigated the consecutive change of retinal vessel's diameter in affected eye and fellow eye of Branch Retinal Vein Occlusion.
This study will use retrospective data to evaluate the safety and efficacy of OZURDEX® (dexamethasone intravitreal implant 0.7 mg) in the treatment of macular oedema due to retinal vein occlusion (RVO) in clinical practice. No intervention will be administered as part of this study.
Aflibercept is FDA approved and the same molecule is available as hyperosmolar for oncology (cost 800 USD for 4ml) and isoosmolar for Ophthalmology (cost 1,770 USD for 0.05ml injection). The 4ml bottle can be fractionated to be used in 40 patients hence the 0.05 ml injection would cost 20 USD for patients. Animal studies showed the injection is safe, knowing that the rabbit vitreous volume is 3-4 times smaller than the human eye. Our pilot study is to ascertain if the approved molecule for oncology when injected in the eye is safe as it is diluted into 5ml vitreous (100 times dilution). If this is so then we can save the patient 100 times for the most efficient antiVEGF that is used for maculopathy in various diseases (AMD, DME, CRVO, etc..)
The purpose of this study is to evaluate the efficacy of intravitreal ranibizumab by determining the pathogenesis of macular edema, which cause a direct effect on visual function. In particular, we focus on the correlation between the treatment effectiveness of ranibizumab and the role of the cytokines involved in the cause of macular edema.
Primary Objective: To investigate the pretreatment quantitative factors as shown in SD-OCT images that correlate with posttreatment VA in patients who underwent intravitreal Lucentis (Ranibizumab) for RVO. Secondary Objectives: Correlations between posttreatment BCVA and pretreatment factors were evaluated, including age, pretreatment BCVA, photoreceptor outer segment (PROS) length, central foveal thickness (CFT), outer foveal thickness (OFT), and outer nuclear layer thickness (ONLT). The factors influencing posttreatment BCVA were evaluated using multiple regression analysis. Detailed information on macular morphology, such as the photoreceptor IS/OS junction and ELM, can be obtained in SD-OCT. Some OCT studies evaluated other quantitative factors in eye disease. It was reported that PROS length was correlated with BCVA in patients with DME.¹ Other investigators suggested that the thickness, area, and volume of the outer layer were correlated with BCVA in patients with dry age-related macular degeneration (AMD).² Outer foveal thickness (OFT) and relative reflectivity of the outer nuclear layer (ONL) were associated with BCVA in patients with macular hole.3, 4 The volume of the ONL was found to be associated with BCVA in patients with AMD.5 The aim of this study was to investigate the pretreatment quantitative factors as shown in SD-OCT images that correlate with posttreatment VA in patients who underwent intravitreal Lucentis (Ranibizumab) for RVO.
Ranibizumab is a humanized anti-vascular endothelial growth factor (VEGF) monoclonal antibody fragment approved in Chile by the Instituto de Salud Pública for the treatment of diabetic macular edema (DME), retinal vein occlusion and age-related macular degeneration. Currently, there is limited epidemiologic information in Chile regarding the incidence of DME and limited experience of anti-VEGF hospital therapy. This study will evaluate the efficacy of intravitreal ranibizumab in Chilean DME patients, to investigate the anatomical and functional improvement following this treatment and to increase the local experience regarding the use of anti-VEGF in the treatment of diabetic macular edema.
The administration of short courses of topical antibiotic drops before and/or after intravitreal injections is a common practice, but increasing evidence suggests this may not lower the risk of infectious endophthalmitis and could increase rates of antimicrobial resistance. The purpose of the present study is to determine the antimicrobial resistance profiles in patients who have received numerous (≥ 20) courses of antibiotics for intravitreal injection compared with untreated controls. This study compares 20 control patients without prior intravitreal injection to 20 patients who have undergone ≥ 20 prior intravitreal injections accompanied by a course of topical antibiotics for two days before and/or after the injection procedure. The lower, inner eyelid and nasal cavity were cultured and evaluated via disk diffusion method for antimicrobial sensitivity.
Comparable data for bevacizumab and aflibercept are lacking, as are studies comparing the systemic levels of ranibizumab, bevacizumab, and aflibercept and their relative effects on circulating vascular endothelial growth factor. In the present prospective study, the investigators evaluated serum drug levels and plasma free vascular endothelial growth factor levels in patients with neovascular age-related macular degeneration following intravitreal injections of ranibizumab, bevacizumab and aflibercept.
Recent studies have shown that intravitreal injection of anti-VEGF agent, Lucentis (Ranibizumab) is effective for macular edema associated with central retinal vein occlusion (CRVO). However, there is little information on whether there are any predictive factors of treatment outcome after this treatment. We plan to perform comprehensive functional and imaging tests to determine significant predictive factors.