15 Clinical Trials for Various Conditions
The goal of this clinical trial is to investigate the use of an FDA-cleared retinal blood flow imaging instrument called the XyCAM RI and XyCAM FC (Vasoptic Medical, Inc., Columbia, MD) in glaucoma management. The main question it aims to answer are: * Can the investigators use blood flow to discriminate between eyes with early-stage glaucoma and variable-matched controls? * Can the investigators validate that the XyCAM FC simultaneously captures both stereo fundus photography and ocular blood flow monitoring? Participants will be * measured for their blood pressure, heart rate, height, and weight * dilated with tropicamide * imaged using the XyCAM RI, fundus photography, optical coherence tomography, and standard automated perimetry * imaged using the XyCAM RI while inhaling 100% oxygen through a mask
Objectives:To determine LYC-001e's influences on ocular blood flow Ocular blood flow has been implicated as a parameter relevant to eye health and involved in the disease process of several ophthalmic pathologies including AMD, glaucoma, and diabetes We hypothesis that LYC-001e will increase measures of ocular blood flow in healthy individuals Methods: This is a single-phase, randomized, parallel, double blind , comparative study of LYC-001e versus placebo on ocular blood vessels in healthy individuals.
The objective is to evaluate the effects of an antioxidant formula versus placebo on ocular blood flow in a randomized double-blind, crossover design. Based upon preliminary data, it is hypothesized that a dietary supplement containing a variety of ingredients with antioxidant properties will, compared to placebo, increase ocular perfusion pressure, retrobulbar, retinal capillary and choroidal blood flow, and maintain these effects over the course of the treatment period.
The purpose of this study is to the determine the effect of salt intake and Captopril on the ophthalmic artery (OA) blood supply of individuals with Type 2 Diabetes Mellitus.
The purpose of this study will be to compare the aqueous production suppressant to aqueous outflow drugs in terms of the response to known vascular parameters. Specifically; systemic perfusion pressure, retrobulbar blood flow and retinal microcirculation.
A 10 week evaluation, crossover design study including a 3 week washout period between treatments, to determine the effects of Combigan® (fixed combination brimonidine tartrate 0.2%/timolol maleate 0.5%) and Cosopt® (fixed combination dorzolamide hydrochloride-timolol maleate ophthalmic solutions) on ocular blood flow as measured by retrobulbar blood flow.
The purpose of this study was to compare the short term effects of two intraocular pressure (IOP) lowering medications on ocular perfusion pressure (OPP), ocular blood flow, intraocular pressure, and blood pressure in patients with glaucoma. Ocular perfusion pressure (OPP) is defined as the difference between arterial blood pressure (diastolic and systolic) and intraocular pressure. The primary efficacy assessment is based on diastolic ocular perfusion pressure.
The aim of this study is to investigate whether enhanced external counterpulsation (EECP) therapy for 7 consecutive weeks will improve cerebral blood flow and possibly over time enhance or slow down breakdown of cognitive function in patients diagnosed with mild cognitive impairment (MCI).
The purpose of this study is to evaluate the effect of Ginkgo biloba extract (GBE) on the number of blood vessels in the back of the eye as well as the amount of blood flow at the nailfold(where the fingernail meets the skin) of the 4th finger in the hand.This finger, along with the 5th finger, has the most transparent skin, which makes imaging a little easier. GBE is an over-the-counter pill, made from a natural powder taken from the Gingko (Maidenhair) tree, that is widely used. A technique called Optical Coherence Tomography Angiography (OCTA),will be used to measure the small blood vessels at the back of the eye, the macula (the area of sharpest vision), and the optic disc (the point at which the nerve fibers from the retina enter to form the optic nerve, which transmits visual impulses to the brain).
Rhopressa effectively lowers intra-ocular pressure by improving conventional outflow and decreasing episcleral venous pressure. While this may result in improved episcleral venous flow, current methods to quantify episcleral blood flow in vivo are rudimentary and unable to accurately and precisely determine flow. Proof that Rhopressa effectively increases episcleral venous flow would differentiate it from other medications. Furthermore, this evidence could galvanize interest in the use of Rhopressa after popular Minimally Invasive Glaucoma Surgery (MIGS) procedures. In future studies, MIGS procedures could be used to improve the proximal outflow pathway, and Rhopressa to enhance distal outflow. Specific Aim: To determine the effect of Rhopressa on episcleral venous outflow and retinal blood flow in a cohort of treatment-naïve ocular hypertensive and glaucoma suspect patients. Hypothesis: Rhopressa increases episcleral venous flow and retinal blood flow from baseline at both 1 hour and 1 week after initiation of therapy.
To analyze Cosopt® in terms of its effects on ocular perfusion pressure and comprehensive ocular blood flow and in relation to visual field progression and optic nerve structural changes in an ongoing 3 year prospective study involving 120 patients with open angle glaucoma.
To determine the relationship between the affects of viewing commercially available content through the VISIOR video goggles and ocular blood flow in glaucoma patients and healthy subjects.
To determine the relationships between ocular hemodynamics and glaucomatous optic neuropathy progression.
The purpose of this study is to use brain imaging technology to measure changes in blood flow to areas in the brain as individuals perform intellectual tasks. This study will use functional magnetic resonance imaging (fMRI) to examine blood flow to areas of the brain as participants engage in tasks associated with visual perception, visual recognition, and memory....
The objective of this study is the development, implementation and management of a registry of patient data that captures clinically meaningful, real-world, data on the diagnosis, nature, course of infection, treatment(s) and outcomes in patients with complex disease globally.