Clinical Trials About "Rats trail behind shrews monkeys humans visual problem" - Page: 20 RSS

13:34 EST 22nd January 2019 | BioPortfolio

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Showing "Rats trail behind shrews monkeys humans visual problem" Clinical Trials 476–500 of 6,200+

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Measuring Neurological Impairment and Functional Visual Assessment In Spinocerebellar Ataxias

Measuring the various difficulties patients with spinocerebellar ataxias (SCA) report in an accurate manner is important to be able to test any therapy that may be developed. As basic research identifies some therapy of this type, clinicians are planning studies that can either prove or disprove that such treatments actually have an effect. Walking problems and problems with eye movements that can give rise to visual complaints are common in the SCA's. Existing neurological sc...

Glutathione in Mild Cognitive Impairment

Elderly humans have an increased risk of dementia which begins as mild defects in memory called mild cognitive impairment. Glutathione (GSH), a key endogenous antioxidant has been linked to cognition. This exploratory study will investigate mechanisms linked to GSH for cognitive impairment (and improvement) by studying humans with mild cognitive impairment who will be evaluated 12-weeks after receiving either N-acetylcysteine and glycine (GSH precursors), or receiving alanine, ...

Comparing SD-tVEP and PERG Tests Between Patients With Glaucoma, Patients With High Eye Pressure and "Normal" Patients

Wills Eye Hospital Glaucoma Research Center will conduct a 1-year prospective study to assess the ability of a Short Duration Transient Visual Evoked Potential (SD- tVEP) and a Steady-State Pattern electro-retinogram (PERG) vision testing system to detect visual dysfunction in patients with ocular hypertension. The study aims to assess the reversibility of retinal ganglion cell (RGC) dysfunction after administering intraocular pressure (IOP) lowering treatment. The investigator...

Storybook Reading in Individuals With Down Syndrome

This study uses mobile eye-tracking technology in order to characterize patterns of visual attention to communication supports, as well as a partner, within real world interactions for individuals with Down syndrome. Visual communication supports are central components of what is termed augmentative and alternative communication (AAC) intervention. AAC refers to the methods and technology designed to supplement spoken communication for people with limited speech. "Aided" AAC i...

Remediation of Elevated Delay Discounting in Mid-life Individuals

Many health-relevant decisions involve intertemporal (now vs. later) tradeoffs. Extensive literature indicates that many negative health and financial consequences suffered in mid-life are linked to adversity and disadvantage during early developmental periods of life. Individuals who continue to engage in these types of unhealthy behaviors despite awareness of the health consequences are exhibiting an inability to delay gratification. Delay discounting (DD) is quantified in h...

Visual Field Changes in TECNIS ZCB00 Monofocal vs. TECNIS Symfony Extended Depth of Focus Intraocular Lens Implantation

Glaucoma is a leading cause of blindness worldwide. Damage to the optic nerve results in vision loss gradually. This vision loss can be detected by using visual field testing, and is a way of monitoring glaucoma progression. As this population ages, cataracts develop, and patients need to undergo cataract surgery to replace the cloudy crystalline lens with an artificial intraocular lens (IOL). The standard of treatment is implantation of a monofocal IOL, but this limits depth o...

Reliability of Light Induced Fluorescence Intraoral Camera Versus Visual-Tactile Method in Assessment of Marginal Integrity of Resin Composite Restorations: Diagnostic Invivo Study

This study will be conducted to assess diagnostic predictive values of a light induced fluorescence intraoral camera versus those of the visual-tactile assessment method according to FDI criteria in clinical evaluation the margins of resin composite restorations

Visual Functional Connectivity and Visual Improvement After TMS/Binocular Treatment

The purpose of this study is to assess the effectiveness of combining binocular treatment with repetitive transcranial magnetic stimulation (rTMS) in improving the vision of adults with amblyopia. This study also seeks to assess the effect of this combined treatment on cortical neural function and functional connectivity.

Mobile Phone Based Structured Intervention

Although asthma outcomes can be improved with structured care, less than half of people with asthma achieve good control. Part of the problem is poor adherence with self-monitoring and preventive drug regimes. This trial will test whether using mobile phone-based monitoring, as part of a structured care plan, improves clinical outcomes and confidence in people with poorly controlled asthma. Adults and teenagers with poorly controlled asthma will be recruited and randomly assi...

Visual Outcomes Following Descemet Stripping Automated Endothelial Keratoplasty

To assess objective and subjective visual outcomes achieved by patients with corneal endothelial dysfunction who have undergone surgical treatment with Descemet stripping automated endothelial keratoplasty (DSAEK).

Gelatin, Collagen, Gummy and PINP

Previous work has shown that gelatin supplementation could increase collagen synthesis in humans. In this study subjects consume placebo, 5 or 15 g of gelatin with a standard amount of vitamin C (48 mg) 1 hour before 6 minutes of jump rope exercise. The feeding and exercise intervention was repeated every 6 hours while the subjects were awake for three days and the amount of the amino terminal procollagen I peptide (PINP) was determined; a marker of collagen synthesis, in the b...

The Impact of Alcohol Consumption on Tuberculosis Treatment Outcomes

After HIV/AIDS, tuberculosis (TB) remains the second leading cause of death due to an infectious disease globally. Retrospective studies from many countries, including the United States and South Africa, have consistently reported that in addition to having a higher burden of TB disease, patients with problem alcohol use have worse TB treatment outcomes. This prospective study will attempt to clarify both behavioral and biologic causal mechanisms underlying the deleterious effe...

Optical Head-Mounted Display Technology for Low Vision Rehabilitation

The goal of this study is to examine the ability of optical head‐mounted display technology to enlarge the visual field of patients with severe visual field loss due to retinal dystrophy and to improve mobility and patient‐reported outcomes.

Behavioral Dynamics Between Infants With Visual Loss and Healthy Controls

An individual senses the world and reflects feedbacks via independent behaviors. Such precise collaboration of the sensory and behavioral systems is fundamental to survival and evolution. When a sensory modality is altered, the behavioral system has the potential to fit in a substitute modality. However, the specific dynamics of human behaviors in response to sensory loss remain largely unknown due to the paucities of representative situations and large-scale samples. He...

Dispensing Study to Assess the Visual Performance of Optimised Prototype Contact Lenses

The aim of this study is to assess the visual performance of multiple optimised prototype soft contact lens designs compared to commercially available contact lenses.

Patient Satisfaction Scales

This study aims to assess differences between 4 types of single satisfaction measures. Secondly, if there is a difference in satisfaction between English speaking and Spanish speaking patients.

Evaluation of Visual Function and Driving Health Using Ocusweep in Patients Suffering From Wet Age-related Macular Degeneration

The aim is to study the use of Ocusweep system especially in driving health evaluation and compare the results produced by Ocusweep system to those of conventional devices. The main focus is in patients suffering from wet age-related macular degeneration. The study aims to find out how frequently these patients do not meet the European Union health criteria of safe driving and how Ocusweep finds these patients from a population of patients being treated in a busy medical retina...

Effect of Probiotics on Central Nervous System Functions in Humans

The gut-brain axis is described as being important in both, gut functions and central nervous system (CNS) functions. The microbiota in the gut plays an important role in this axis through neural, immune and endocrine systems. Previous studies have found altered gut microbiota (GM) composition could change the CNS functions in animals and humans. Probiotics were shown having positive effect on improving stress response in animals and stress related psychiatry in humans. The cur...

Correlation Between LIF (Leukemia Inhibitory Factor ) Levels in Cord and Maternal Blood in Women Treated With Mg

During embryonic development, there are several cytokines such as: LIF (Leukemia inhibitory factor), ciliary neurotrophic factor (CNTF), epidermal growth factor family (EGF), neuregulin 1 (NRG1) and transforming growth factor β (TGFβ) that were found are associated with neurogenesis and differentiation of brain cells. LIF is a cytokine that is essential for the development of the central nervous system, and has recently been shown in rats that maternal LIF stimulates placen...

Topiramate Treatment of Problem Drinkers

The purpose of this study is to evaluate the safety and efficacy of topiramate in reducing drinking and heavy drinking frequency in problem drinkers. We hypothesize that at a dosage of up to 200mg/day, topiramate will be well tolerated in this patient population and that, compared to placebo treatment, topiramate will result in a greater reduction in the frequency of both drinking days and heavy drinking days.

A Comparison of the Effect of Dorzolamide and Timolol on Optic Disk Blood Flow in Patients With Open Angle Glaucoma

Glaucoma is one of the most common causes of blindness in the industrialized nations. For a long time glaucoma has been defined as a disease in which high intraocular pressure (IOP) leads to irreversible optic disk damage and concommitant visual field loss. However, recent investigations show that IOP is not necessarily an adequate measure of clinical severity or a predictor of clinical progression: about 20% of all eyes with high IOP do not develop visual field loss and some p...

The Effect of Probiotics on Chronic Kidney Disease

Probiotics could improve renal function parameters in uremic rats and significantly lower levels of blood urea nitrogen in stage 3 and 4 chronic kidney disease patients. The aim of the present study is to evaluate whether probiotics could retard the decline of renal function in patients with chronic kidney disease?

Evaluation of Visual Performance With Contact Lenses

This study will evaluate the influence of contact lens optical design on visual performance using standard and multifocal soft contact lenses (MFCLs).

Bioavailability of Iodine in Cow's Milk in Swiss Adults

Iodine deficiency remains a global problem impairing health and development in affected populations. Although there has been remarkable global progress against iodine deficiency, mild and moderate iodine deficiency remain common globally, including European countries. Besides salt, milk and dairy products are important iodine sources in many industrialized countries, with varying contributions depending on the milk iodine concentration and the amount of milk and dairy consumed....

Low Vision Patients' Preference for Colored Filters and Illumination for Near Reading Determined by the LuxIQ/2

The effect of tinted filters and illumination on the visual performance of patients with low vision (i.e., individuals with reduced vision that is uncorrectable with glasses, surgery or treatments) has been a topic of research and discussion for many years, yet there is no current consensus or practice standard for the evaluation and recommendation of colored filters and/or illumination intensity. Anecdotally, there have been many subjective reports of improvement in visual fun...

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