Active clinical trials for "Retinal Vein Occlusion"

The purpose of this non interventional retrospective study is to continue to collect data from patients following their completion of Protocol CLS 1003-201: "Safety and Efficacy of Suprachoroidal CLS-TA with Intravitreal Aflibercept in Subjects with Macular Edema Following Retinal Vein Occlusion" (ie, the parent study).

Retinal vein occlusion (RVO) is a common vascular disease of the eye. Studies have shown that the risk of venous thrombosis is higher in winter so even concerning RVO. Studies have shown a possible link between sun exposure and venous thrombosis. Vitamin D levels have been shown to have a similar seasonal variation, with a peak occurring in the summer. The primary source of vitamin D is from sunlight when ultraviolet B (UVB) radiation penetrates the skin and converts 7-dehydrocholesterol to 25-hydroxycholecalciferol vitamin D3 (25-OHVitD) via previtamin D. In Stockholm situated at latitude 59˚ 20΄ North, it is not possible to synthesize vitamin D at sufficient levels in winter and the exposure time required to reach a standard dose is impractical from at least October through March. The aim of the study is to evaluate vitamin D levels in central retinal vein occlusion (CRVO) patients and compare them with the vitamin D levels in randomly selected control patients matched for age and month of disease onset. This is to evaluate whether vitamin D deficiency may be a risk factor in the onset of CRVO. The hypothesis of the study is that patients with CRVO have lower levels of vitamin d than matched controls.

This study purpose is to evaluate the association between Retinal Vein Occlusion and Obstructive Sleep Apnea.

This research is being done to assess the long term prognosis of patients treated with ranibizumab for edema due to retinal vein occlusion.

This is a research study to evaluate the effects of repeated intravitreal injections on bacteria around the eye.

Epidemiological study of Ozurdex® in sites treating patients with retinal vein occlusion.

This study will evaluate the relationship between time since onset of macular oedema symptoms and the achievement of vision gain in patients prescribed OZURDEX®. All care and diagnostic procedures provided are at the discretion of the participating physicians according to their clinical judgment and local standard of medical care.

Growing evidence shows that altered blood flow plays a major role in many vision-threatening diseases including glaucoma, diabetic retinopathy, age-related macular degeneration, Central Retinal Vein Occlusion, and Branch Retinal Vein Occlusion. Optical coherence tomography, an established imaging technique use for eye exam in clinical ophthalmology, provides high-resolution cross sectional images of the retina and has increased our ability to understand many eye diseases.

In patients treated for exudative age-related macular degeneration (AMD), diabetes, retinal venous occlusion (OVR), or other conditions causing macular edema, treatments with anti-angiogenic intravitreal injections (IVT) are widely used both for their anti-angiogenic action. Patients often have injections for many years, sometimes monthly or every 2 months. The discontinuation of treatment with repeated injections of anti-angiogenic agents, linked to the COVID-19 coronavirus pandemic will potentially impact the visual acuity, the ophthalmological state and the quality of life of the patients concerned, therefore it is relevant to analyze the consequences the breakdown of usual care in this population.

This is a search strategy for determining the prevalence of ocular complications in inflammatory rheumatic diseases for the purposes of a meta analysis.