View clinical trials related to Neovascularization, Pathologic.
Filter by:This investigator initiated pilot study is designed to investigate the efficacy and safety of SD-OCT-guided intravitreal ranibizumab treatment in choroidal neovascularization (CNV) due to myopia. Newly diagnosed and active CNVs due to myopia are treated with one intravitreal injection of Ranibizumab 0.5mg (Lucentis) at baseline. During the follow up period of 12 months monthly ophthalmological examinations including best corrected visual acuity (BCVA) and high resolution spectral-domain optical coherence tomography (SD-OCT) assessments are performed. Detection of persisting or new signs of CNV activity at OCT triggers ranibizumab re-treatment considering that any ranibizumab injections can maximally be applied as often as monthly.
The purpose of the study is to detect persisting or early new activity of choroidal neovascularization (CNV) due to age related macular degeneration (AMD) during the first 12 months following the first ranibizumab dose at baseline as assessed by weekly high resolution optical coherence tomography (OCT). Detection of persisting or new signs of CNV activity at OCT triggers further ranibizumab treatments considering that any ranibizumab injections can maximally be applied as often as 2-weekly.
This study is being done to demonstrate the feasibility of using a nasal endoscope to perform intraoperative angiography of surgical field, with the goals to evaluate anatomical landmarks and tumor characteristics during skull base surgery and publish a technical note.
This research project intends to observe patients with high myopia who show pathological retinal changes, in order to evaluate more data on the risk factors for developing mCNV within this research project population in Germany.
The purpose of this study is to compare the efficacy (times of injection, change of visual acuity and Cva/ I) and safety (macular visual function and choroidal thickness) of different dosing of ranibizumab intravitreal injection (1+PRN vs. 3+PRN) in treating with pathological myopia choroidal neovascularization (PM-CNV).
This was a Phase II, multicenter, randomized, active comparator-controlled, 52-week study to investigate the efficacy, safety and pharmacokinetics of faricimab (RO6867461; RG7716) administered with extended dosing regimens in treatment-naive participants with neovascular age related macular degeneration (nAMD). Only one eye was chosen as the study eye.
The goals of this study are: To assess the impact of genetic testing based on how it alters behaviors, to assess the utility of serum biomarker measurement in combination with genetic testing, to assess the utility of genetic counseling in personal analysis of risk for age-related macular degeneration (AMD), and to assess the impact of presymptomatic genetic testing for choroidal neovascularization (CNV).
The intra-vitreous injection (IVT) of anti-VEGF (vascular endothelial growth factor) is currently the standard treatment for retinal neovascularization. The VEGF stimulates endothelial cells' proliferation and migration. It also increases microvascular permeability. If the VEGFs have proven their efficiency in the decrease of choroidal neovascular proliferation, their impact of the head of the optic nerve's microvasculature is yet unknown. Knowing that this microvasculature provides the retinal nerve fibers with oxygen, located in the area of the head of the optic nerve, a vasoconstriction induced by the anti-VEGF may have an incidence on the loss of retinal nerve fibers.
This is a prospective, observational, multi-center, study. The study will be conducted in approximately 12 ophthalmological clinics and practices throughout Greece. It is planned to collect data on treatment of wet Age related Macular Degeneration (wAMD) from about 120 patients for which the decision to treat with intravitreal aflibercept injections is made at the discretion of the attending physician, according to his/her medical practice. Visits will be performed at baseline, aflibercept first injection (if different from enrollment) and at 12 and 24 months. The 12 and 24 month comprise the data collection visits during which any data generated in the period preceding these visits will be recorded. All required information for the purposes of this study will be collected using electronic Case Record Form (eCRF). The web-based electronic data capture (EDC) application will be specifically designed for the needs of the study and will adhere to all applicable data protection regulations and requirements with regard to electronic records. The study observation period for each patient enrolled in this study is the time from the beginning of treatment with intravitreal aflibercept injection up to two years or until discontinuation of intravitreal aflibercept injection-treatment due to any reason including withdrawal of consent or patient loss from follow-up.
Neovascularization (NV) is the innate capability to enlarge collateral arteries ("arteriogenesis"), and to stimulate growth of new capillaries, arterioles and venules at the tissue level ("angiogenesis"). Patients with Chronic Limb-threatening Ischemia (CLI) present with forefoot rest-pain, ulceration and/or gangrene. They require risky and costly revascularization operations to avoid amputation. The investigators hypothesize that their inadequate NV can be modulated to restore this capability. By correcting impediments to NV in an out-patient setting, the investigators expect to facilitate CLI management. While the following impediments to NV are complex, the solution is not. Arteriogenesis necessitates endothelial cell activation in small collaterals as blood is offloaded away from the occluded artery. Shear stress provides this stimulus, but is attenuated caudal to multi-level arterial occlusive disease. The "arteriogenesis switch" is not turned on. Furthermore, the lack of nutritive oxygenated blood inflow and the accumulation of toxic metabolic by-products are adverse to synthetic pathways in the ischemic tissue. Additionally, protein "distress" signals cannot be effectively disseminated by the ischemic tissue, and the reparative progenitor cells they are supposed to mobilize cannot effectively home back to the ischemic tissue to orchestrate NV. The CLI patient is especially disadvantaged by having diminished function and number of circulating progenitor cells (CPC). Lastly these elderly, often diabetic, patients are less able to fend off infection. An FDA approved external programmed pneumatic compression device (PPCD) was used to restore the shear stress stimulus required for arteriogenesis. It also enhances oxygenated nutritive arterial inflow, clears waste products of metabolism (increased venous and lymphatic outflow), and helps distress proteins reach the central circulation and mobilized progenitor cells to return to the ischemic tissue. We corrected the progenitor cell and immunologic impairment with granulocyte colony stimulating factor (G-CSF), FDA approved for stem cell mobilization and immunological boost in the setting of cancer chemotherapy. The preliminary data show clinical, angiographic, hemodynamic and biochemical evidence for enhanced NV. The purpose for this study is to enroll 25 patients to reproduce the biochemical data to support a large scale clinical trial.