Active clinical trials for "Optic Nerve Diseases"

Does treatment with bevacizumab (Avastin) in combination with prior or current radiotherapy lead to optic neuropathy?

Retinal tissue parameters of pediatric patients with vitamin D deficiency will be evaluated in this prospective case-control study. The patients will be divided into 2 groups according to the vitamin D level. Retinal vessel diameters, retinal nerve fiber evaluation, choroidal thickness will be evaluated. Choroidal thinning decrease in retinal artery diameter and increase in retinal vein diameter will be detected in the vitamin D deficiency group.

Post-operative visual loss (POVL) following non-ocular surgical procedures is an infrequent but severe complication. Little is understood about this complication, but most cases seem to result from loss of blood flow to the optic nerve. This is a pilot, single center, prospective, randomized, two-arm study involving 20 subjects at The Ohio State University Wexner Medical Center who are scheduled to undergo spine surgery that requires prone position and at least two hours of general anesthesia or total intravenous anesthesia (TIVA) and intraoperative neurophysiological monitoring. Patients will be randomized to either general anesthesia or TIVA, and wear the SightSaver device to monitor visual evoked potentials (VEPs) during surgery in order to detect possible changes in optic nerve function that may lead to POVL. We hypothesize that this new, flexible, disposable device will yield better results and more patient satisfaction than devices currently used for visual monitoring during prone spine surgeries.

The purpose of this study is to evaluate the feasibility of rapid evaluation and administration of ophthalmic Timolol maleate in the treatment of non-arteritic anterior ischemic optic neuropathy. Secondary goals are to evaluate if such treatment reduces the progression or improves recovery of patients who are randomly assigned to treatment versus standard of care.

The patient presents to the ophthalmological emergencies and / or to the internal medicine department. NOIA clinical discovery Patient referred in radiology for brain and visual MRI. The two sequences added by the research (8 minutes) will be added to that of the treatment.

The objectives of this observational cohort study are : To assess the ability of optic nerve (ON), optic nerve sheath diameter (ONSD) and optic nerve sheath thickness (ONST) measured by ultrasound to predict Giant Cell Arteritis. To evaluate changes in ON, ONSD, ONST measurements in patients with confirmed GCA after three months of therapy To assess dynamic changes in ON, ONSD, ONST measurements in patients with relapsing GCA

This is an open-label, dose escalation, safety, tolerability and pharmacokinetic study, where active study drug (QPI-1007) will be given to all patients who participate. This study will determine whether QPI-1007 is safe when it is injected into the eye. The study will also reveal if there are any side effects of the drug and how long it takes for the body to clear the drug.

In this study the investigators propose to perform a Phase II Clinical Trial which seeks to evaluate the safety of cell therapy as a new treatment for patients who suffer from acute non-arteritic anterior ischemic optic neuropathy (NAION). If it is successful, a later study to assess efficacy will be performed. This disease has an age-adjusted incidence rate of 10/100.000, and in many cases it results in blindness. Currently, there is no available treatment and second eye involvement occurs in approximately 15-25% of the cases. All this background originates a particularly dramatic outcome for the patient. Therefore, it seems justified to evaluate new therapies that maintain or improve the visual function in these patients. The Project includes a clinical trial whose purpose is the assessment of the safety of intravitreal administration of allogenic mesenchymal stem cells (MSC) in patients with NAION, a product in clinical research phase (PEI No. 15-007) already approved for other human clinical applications (PEI No. 15-007). It can be considered that the therapy with intravitreal injection of MSC is a treatment option in patients with acute NAION, since through the paracrine properties of these cells (secretion of neurotrophic, immunomodulatory and anti-apoptotic factors) it may prevent or reduce the progression of axonal degeneration caused by this disease.

A single arm, single center trial to assess the safety and efficacy of restoring function in damaged optic nerves using autologous purified populations of bone-marrow derived stem cells (BM-SCs) through a 24 month follow up period.

Correction of the deficit in the perfusion pressure of the microcirculation that supplies the nerve by intravenous infusion of Prostaglandin E1 (PGE1) (Alprostadil), expected to improve visual function in patients with ischemic optic neuropathy previous non-arteritic (NOIANA).