View clinical trials related to Retinal Degeneration.
Filter by:It has been hypothesized that thermal damage of laser pan-retinal photocoagulation may affect macular pigment as well as inner layer cells in the retina, so it was aimed to investigate possible effect of conventional laser pan-retinal photocoagulation on macular pigment optical density in diabetic retinopathy patients without macular edema and pathology in this study.
This is a 24 week open label study to assess the efficacy of bi-weekly ranibizumab for patients with retinal fluid due to exudative macular degeneration refractory to monthly therapy.
This study is a Phase I/II , open label,non randomized, prospective study to determine the safety of human embryonic stem cell derived Retinal pigmented epithelium (hESC RPE) sub retinal injections versus hESC RPE seeded on a polymeric substrate implanted in the sub retinal space,
Inherited retinal degeneration (IRD) is a major cause of blindness and partial loss of vision cases in the UK and starts at an early age. The purpose of this observational study is to use the results of two questionnaires and a computerised test testing contrast sensitivity, to assess the impact of IRD on quality of life. This study will involve collecting data from patients with IRD, but also collecting data from normal controls.
The purpose of this first-in-human study is to evaluate the safety, pharmacokinetics (PK) and pharmacodynamics of OPT-302 administered as monthly intravitreal injections for 3 months with and without Lucentis™ in patients with wet age related macular degeneration (AMD). This study will be conducted in two parts: Part 1 will comprise an open label, sequential dose escalation and Part 2 a randomized dose expansion. OPT-302 is a soluble form of VEGFR-3 comprising the extracellular domains 1-3 of human vascular endothelial growth factor receptor (VEGFR)-3 and the Fc fragment of human IgG1. It functions by binding and neutralizing the activity of vascular endothelial growth factor (VEGF)-C and VEGF-D on endogenous VEGFR-2 and VEGFR-3. VEGF-C and VEGF-D promote blood vessel development (angiogenesis) by binding and activating VEGFR-2 and VEGFR-3. VEGF-C is also a potent inducer of vascular permeability or leakage. Angiogenesis and vascular leakage are key hallmarks of wet AMD. Approved therapies for wet AMD include Eylea™ and Lucentis™ which block the activity of VEGF-A, but not VEGF-C or VEGF-D which are alternate members of the same family of molecules. VEGF-C and VEGF-D can stimulate blood vessel growth and leakage through the same pathway as VEGF-A (via VEGFR-2), as well as through pathways that are independent of VEGF-A (via VEGFR-3). Published studies have also indicated that VEGF-C and VEGF-D play an important role in mediating resistance to therapies that block VEGF-A such as Lucentis™ and Eylea™. Combination therapy with OPT-302 an anti-VEGF-A agent provides a more complete blockade of the VEGF family. This strategy targets functional redundancy in the VEGF pathway and mechanisms of 'resistance' or sub-response to VEGF-A inhibition.
Bone marrow-derived mesenchymal stem cells (MSC) therapy is a promising treatment for several degenerative diseases, including retinopathies and glaucoma, however no previous safety study involving humans has been conducted. The objective of this study is to evaluate effects of autologous bone marrow-derived MSC transplantation in the worst eye of 10 patients with legal bilateral blindness due to glaucoma. Primary outcome are types and severity of adverse effects. Secondary outcomes are changes in visual field, visual acuity, optical coherence tomography, and retinal ganglion cells function.
The purpose of the current study is to evaluate the ability of Eylea to induce a regression of PED height on patients previously extensively treated by Lucentis. The regimen proposed for this study is the 3 monthly injection followed by a 6 weeks interval injection until week 26.
Background: - The purpose of this study is to find out whether color vision measured with the Cambridge Color Test is a good way to examine the severity of inherited retinal diseases (IRDs). IRDs are a major cause of vision loss worldwide, but very little is known about how the diseases affect color vision over time. This study will tell us if color vision may be used to track changes in inherited retinal diseases over time. Objectives: - To improve understanding of color vision as a way to measure changes in inherited retinal diseases. Eligibility: - People 5 years of age or older who have an IRD. - Healthy volunteers at least 5 years of age. Design: - Participants will make at least one visit to the National Eye Institute clinic. If they sign up for more tests, they may have up to three visits to the NEI clinic. - Participants will be asked questions about their medical and eye history. - Participants will be given an eye exam, including eye drops to dilate their pupils. They will take the Cambridge Color Test, which includes looking at a monitor and pressing a button, and arranging colored circles. Several other tests may be offered, but participants can decline to take them. - Treatment will not be provided as part of this study.
Patients who are legally blind, caused by retinal degeneration of photoreceptor rods & cones (e.g. Retinitis pigmentosa), receive a subretinal implant to restore vision partially.
The study will involve approximately 40 subjects aged 55 or above who have exudative age-related macular degeneration (wet AMD). Patients will be randomized to receive one of two doses of rAAV.sFlt-1 or assigned to the control group.