Safety and Efficacy After Selective Intra-arterial Thrombolysis for Central Retinal Artery Occlusion...
Central Retinal Artery OcclusionCentral retinal artery occlusion (CRAO) is an ophthalmic emergency which leads to devastating visual function defects and poor prognosis. Though traditional conservative treatments are widely used, none of them is proved to be effective. A number of meta-analyses and observational studies indicate intravenous thrombolysis to be beneficial in CRAO. Selective intra-arterial thrombolysis (IAT) introducing rt-PA directly into the ophthalmic circulation by super-selective microcatheterization may reduce the complications such as intracranial and systemic hemorrhage.The residual visual field is significant for patients with CRAO who have poor central visual acuity. Thus, it is clinically significant to study the changes in visual fields in eyes with CRAO.
TENecteplase in Central Retinal Artery Occlusion Stuy (TenCRAOS)
Central Retinal Artery OcclusionTENecteplase in Central Retinal Artery Occlusion (TenCRAOS): A Prospective, randomized-controlled, double-dummy, double-blind phase 3 multi-centre trial of TNK 0.25 mg/kg + placebo vs. ASA + placebo (2 arms with 1:1 block randomization). A Prospective, randomized-controlled, double-dummy, double-blind phase 3 multi-centre trial of TNK 0.25 mg/kg + placebo vs. ASA + placebo (2 arms with 1:1 block randomization). At all participating centers, ophthalmologists are involved in the diagnosis and visual outcome measurements using a standardized protocol. The patients will be promptly examined by the ophthalmologist. As soon as the CRAO is diagnosed by the ophthalmologist, the patients will be managed in the stroke unit during treatment, monitoring, and medical investigations. After treatment in the stroke unit, the patients will be re-examined by an ophthalmologist and a neurologist as an out-patient at (30 ±5) and 90 (±15) days
Early Reperfusion Therapy With Intravenous Alteplase for Recovery of VISION in Acute Central Retinal...
Central Retinal Artery OcclusionNon-arteritic, thromboembolic central retinal artery occlusion (CRAO) is an acute neurovascular-ophthalmological emergency which leads to severe and permanent vision loss; no evidence-based therapy does exist. Two recent meta-analyses indicate early intravenous thrombolysis to be beneficial in CRAO. Therefore, the REVISION randomized placebo-controlled interventional trial will investigate intravenous alteplase in CRAO as it is practiced in acute ischemic stroke, i.e. within 4.5 hours after symptom onset. The REVISION observational study will evaluate retinal changes on optical coherence tomography (OCT) in patients within 12 hours of CRAO onset, and the REVISION substudy, which will be conducted adjunct to either the interventional or the observational study, will evaluate the value of the retrobulbar spot sign for prediction of outcome and treatment response.
A Phase III Randomized, Blind, Double Dummy, Multicenter Study Assessing the Efficacy and Safety...
Central Retinal Artery OcclusionThe aim of the THEIA study is to determine if Alteplase administrated within 4.5 hours improve visual deficit due to acute CRAO with a good safety profile.
New Non-invasive Modalities for Assessing Retinal Structure and Function
Ischemic Optic NeuropathyBranch Retinal Artery Occlusion3 moreThis study investigates a new technology to assess the structure and function inside the eye. Retinal imaging of subjects with inner and outer retinal defects to detect areas of abnormal structure and function compared to other visual function tests.
Pre and Post-arterial Recanalization Imaging of Central Retinal Artery Occlusions (CRAO)
Retinal Artery OcclusionMagnetic Resonance Imaging3 moreCentral retinal artery occlusions (CRAO) are the equivalent of an ischemic stroke at the retinal level. They share the same risk factors and common pathology. The diagnosis of a CRAO is clinically based on the sudden occurrence of a decrease in deep visual acuity with fundamentally signs of reactive ischemia. Small studies have highlighted the value of cerebral MRI (Magnetic Resonance Imaging) in CRAO with almost 25% of ischemic strokes found on diffusion sequences and the demonstration of a correlation between anomalies in diffusion sequence and the probability of a pathology with a high risk of recurrence (carotid stenosis or emboligenic cardiopathy). But there are usually few radiological signs that allow a direct positive diagnosis of CRAO, an etiologic diagnosis or a prognosis. This descriptive study will focus on CRAO at the diagnostic and post-treatment phases in the short and medium term, in order to (i) identify imaging etiologic signs of CRAO with specific sequences from a 3 Tesla MRI, (ii) identify positive diagnostic signs of CRAO with the same specific sequences, (iii) correlate these signs with the visual prognosis one month after the CRAO.
High Resolution Optical Coherence Tomography
Retinal DiseaseRetinal Detachment14 moreComparison of high-resolution optical coherence tomography (High-Res-OCT) to conventional imaging modalities for the diagnosis of eye diseases
OCT in Rare Chorioretinal Diseases
Retinal Artery OcclusionsPolypoidal Choroidal Vasculopathy3 moreThis study will evaluate the total blood flow in the retina and choroid (structures in the back of the eye) by Doppler optical coherence tomography (OCT) and OCT angiography. Angiography is mapping of the blood vessels. The purpose of measuring blood flow in the retina and choroid is to 1.) determine if rare diseases in these structures causes a change in blood flow compared to healthy eyes and 2.) find out if areas of changed blood flow line up with areas of damage that appear on conventional testing.
EAGLE - Multicenter Study of the European Assessment Group for Lysis in the Eye
Retinal Artery OcclusionFibrinolysis3 moreThe aim of the EAGLE Study is to compare the efficacy of conservative medical treatment and local intraarterial fibrinolysis in patients with central retinal artery occlusion and to evaluate benefit and risk for the patient of both therapies.
Transcorneal Electrical Stimulation Therapy for Retinal Disease
Retinitis PigmentosaMacula Off9 moreTranscorneal stimulation may enable neurons to survive degeneration processes via enhanced secretion of neurotrophic substances and direct stimulation of neurons.