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Showing 1-20 of 21 trials
NCT07100990
The purpose of this research is to evaluate if early vs rescue Therapeutic Plasma Exchange (PLEX) treatment algorithm leads to better visual outcomes in severe Optic Neuritis and leads to better neurological disability outcomes in severe Transverse Myelitis.
NCT01623076
This study seeks to determine the biologic causes of inflammation in patients with Transverse Myelitis (TM) Neuromyelitis Optica Spectrum Disorder (NMOSD) and related conditions. While patients will be treated according to decisions with their treating physician, this study will collect data and samples from patients prospectively to gain a better understanding of the disease. We are seeking to understand why some patients respond to medications, while others do not. We also seek to understand what happens biologically, preceding relapses. Gathering these data and samples will allow researchers to identify new ways of diagnosing and treating these diseases. Data and samples will be shared with researchers around the world to support collaborative efforts to treat these conditions.
NCT02976766
The purpose of this study is to determine whether gypenosides are neuroprotective in patients with acute optic neuritis.
NCT06453694
The goal of this pilot clinical trial is to test efgartigimod alfa against placebo in adults with first-time optic neuritis (optic nerve inflammation). The main questions it aims to answer are: * Is it feasible to use efgartigimod alfa for optic neuritis? * Is it feasible to run a larger trial testing efgartigimod alfa in optic neuritis? * Does efgartigimod alfa work better than placebo in improving how quickly and how much vision returns? Participants will: * have their vision and blood tested * be asked questions about their vision * will receive standard of care treatment with steroids regardless of whether they are receiving efgartigimod alfa or not * will have periodic visits over 6 months
NCT00445367
To establish a large, longitudinal collection of high quality samples and data from subjects with MS, selected other demyelinating diseases (Transverse Myelitis (TM), Neuromyelitis Optica (NMO) or Devic's, Acute Disseminated Encephalomyelitis (ADEM), and Optic Neuritis (ON)), and related and unrelated unaffected controls. Samples and data will be available as a shared resource to scientists researching the causes, sub-types, and biomarkers of MS and related demyelinating diseases.
NCT03401879
Multiple sclerosis (MS) affects approximately 2.3 million patients worldwide, with a global median prevalence of 33 per 100,000. MS is diagnosed at an average of 30 years and affects twice as many women as men. MS is traditionally diagnosed by the presentation of lesions of the central nervous system, disseminated in time and in space, proven by clinical examination and magnetic resonance imaging. Several anatomical parameters in the eye, both vascular and neural, have been found to be altered in MS patients. Because of its unique optical properties, the eye offers the possibility of the non-invasive assessment of both structural and functional alterations in neuronal tissue. As the neuro-retina is part of the brain, it does not come as a surprise that neuro-degenerative changes in the brain are accompanied by structural and possibly also functional changes in the neuro-retina and the ocular vasculature. The current study seeks to test the hypothesis that beside the known anatomical changes, also functional changes can be detected in the retina of patients with MS. For this purpose, flicker light induced hyperemia will be measured in the retina as a functional test to assess the coupling between neural activity and blood flow. Further, structural parameters such as retinal nerve fiber layer thickness and function parameters such as ocular blood flow and retinal oxygenation will be assessed and compared to age and sex matched controls.
NCT06776224
Multiple sclerosis (MS) is an inflammatory demyelinating and degenerative disease of the central nervous system. The mechanisms of neuro-axonal loss remain incompletely elucidated. An acute demyelinating lesion will produce both immediate and delayed axonal loss. Immediate axonal loss is linked to the occurrence of axonal transection. Delayed axonal loss is the cause of axonal degeneration in progressive MS. Visual impairment is common in the disease (vision, oculomotricity, cognition). Through a longitudinal multimodal analysis of visual pathways, we would like to investigate physiopathological mechanisms leading to neurodegenerative process and visual impairment.
NCT06389968
The aim of this monocentric randomized controlled intervention study is to improve visual function in persons with multiple sclerosis following optic neuritis (neuritis nervi optici) by means of a light stimulation. In the treatment arm, two 80-second light stimulations are to be administered daily for 12 days in 25 persons with multiple sclerosis following recent optic neuritis (1-3 months). For the standardized application of light stimulation in the sense of standardized training, the light stimulation is to be carried out by watching a generated flicker video on a mobile phone. In a sham-intervened control group (sample size 25), the spontaneous course after optic neuritis will be recorded in parallel. Intensive neuronal stimulation of the visual pathway will be used to stimulate regenerative processes, which will be recorded by means of changes in high-contrast visual acuity (primary endpoint). Secondary endpoints are changes in a colored-contrast test, in 2.5% low contrast visual acuity, the peak conduction latency of visual evoked potentials, and retinal layer thicknesses and vessel densities measured in optical coherence tomography and optical coherence tomorgraphic angiography. These physiological parameters should help to understand the underlying processes of a potentially altered visual performance.
NCT04793087
3D FLAIR, 3D T1 FAT SAT, coronal T2 and coronal T1 dixon sequences were usually used to assess visual deficits in MRI. Optic nerve examination is preferably performed using a coronal T2 sequence in order to detect a hypersignal suggestive of inflammation whereas brain examination is preferably performed using a 3D T1 sequence to highlight signs of spatial dissemination and lesions suggestive of multiple slerosis (MS). No study has yet investigated the detection capabilities of 3D T1 for the detection of optic nerve inflammation. The objective of this retrospective study was to determine whether a single 3D T1 sequence allows simultaneous exploration of the optic nerve and the brain for the positive diagnosis of optic neuropathy and/or MS.
NCT04257734
This will be a hospital-based retrospective multi-center study on epidemiologic and clinical characteristics of optic neuritis among Chinese. The investigation will cover about 29 provinces or municipalities all around China.
NCT01337986
Fifty subjects will be enrolled in this Phase II, investigator-initiated, randomized and blinded cross-over trial of dalfampridine of 8 weeks duration The study will test the hypothesis that dalfampridine, when administered to subjects with incomplete visual recovery after optic neuritis from MS, will result in symptomatic improvement in visual function. The study will consist of one screening/baseline visit, one visit during treatment with active drug, and one visit on placebo. After the baseline visit, subjects will be randomly assigned to receive study medication or placebo for the first three weeks, followed by a two week wash-out, and then treatment reallocation for the latter three weeks.
NCT01962571
This clinical trial aims at preventing visual dysfunction and optic nerve degeneration associated with autoimmune optic neuritis by systemic i.v. administration of 33.000 IU erythropoietin over 3 days. The primary objective is to determine the efficacy of erythropoietin compared to placebo given as add-on to methylprednisolone as assessed by measurements of retinal nerve fibre layer thickness and low contrast visual acuity 6 months after acute optic neuritis.
NCT02657915
The primary objective of the study is to assess full-field visual evoked potential (FF-VEP) latency in subjects who were enrolled in Study NCT01721161 2 years (+ up to 12 months) after the last study visit. The secondary objective is to assess clinical progression and severity of central nervous system (CNS) demyelinating disease in subjects who were enrolled in Study NCT01721161 2 years (+ up to 12 months) after the last study visit. Intervention was administered in the previous study. The participants, investigator and outcome assessors remain blinded in this follow-up study.
NCT02939937
Optic neuritis typically occurs in young (mean age, 32 years), female (77%) patients, and it presents as subacute monocular visual loss that develops over several days. As yet, treatment with intravenous corticosteroid for optic neuritis had no long-term beneficial effect on vision. There are a number of factors that contribute to nerve fibre damage including increased level of sodium, so blocking sodium entry could help to protect them against damage. The main objective of the study is determine whether phenytoin (which blocks sodium entry) can protect nerve fibre and improve final visual function after optic neuritis.
NCT02864134
BACKGROUND AND OBJECTIVES: The recent expansion of the applications of optical coherence tomography (OCT) demonstrated a higher correlation between the analysis of ganglion cells and visual function, in comparison with the analysis of the nerve fiber layer for several diseases of the optic nerve. Atrophy of the ganglion cells tends to induce the visual function deficits. In the case of optic neuritis, inflammation of the optic nerve causes a deficit of visual function initially with low vision, color blindness and visual field. Secondary atrophy of ganglion cell can result. The purpose of the study is to evaluate the correlation between the analysis of ganglion cells at the time of diagnosis of optic neuritis and the resulting visual acuity at 6 months and visual function (visual acuity, color vision and perimetry) 1 year regardless of treatment. A predictive effect could help predict the patient's clinical course and management of uncertainty and anxiety. MATERIALS AND METHODS: An assessment at diagnosis and follow-ups at 6 months and 1 year with a measurement of best corrected visual acuity, a test color vision HRR (Hardy-Rand-Rittler), an OCT with analysis of ganglion cells and perimetry Humphrey 30 -2 fast will be done. Simple linear and logistic regressions will be used. RESULTS: We expect that there will be a significant association between atrophy of ganglion cells in the diagnosis and residual visual function after an episode of optic neuritis. We believe that the initial atrophy is associated with poorer visual prognosis. CONCLUSION: A predictive effect could help to inform the patient about the evolution of the disease and provide early visual rehabilitation.
NCT01294176
The purpose of this study is to determine if oral lipoic acid can safely help relieve permanent optic nerve injury in patients diagnosed with acute optic neuritis. It will also explore how the body absorbs and breaks down the study drug, and what effects it has on the immune system.
NCT00856635
The main objective of the study is to determine whether glatiramer acetate 20 mg once daily reduces the amount of axonal loss in the optic nerve after a first event of acute optic neuritis compared to placebo patients and to generate data supporting the potential neuroprotective effect of glatiramer acetate in a human in vivo model of axonal loss.
NCT00624468
This study was intended to evaluate the efficacy, safety and tolerability of atacicept compared to placebo and to explore the neuroprotective effect of atacicept as assessed by OCT in subjects with ON as CIS. The study was randomized. Study medication was administered via subcutaneous (under the skin) injections.
NCT01451593
Optic neuritis is caused by inflammation of the optic nerve and causes loss of vision in the affected eye. It is often associated with multiple sclerosis. Loss of vision after an attack of optic neuritis is caused by damage to the nerve fibres in the optic nerve. There are a number of factors that contribute to nerve fibre damage including increased levels of sodium within them, so blocking sodium entry could help to protect them against damage. The purpose of this study is determine whether phenytoin (which blocks sodium entry into cells) can protect against loss of nerve fibres and prevent loss of vision after optic neuritis.
NCT00355095
The purpose of this study is to determine the safety and efficacy of erythropoietin as an add-on therapy to methylprednisolone in subjects with acute autoimmune optic neuritis.