View clinical trials related to Visual Field Defect, Peripheral.
Filter by:A visual field (VF) is a measurement of how wide an area our eyes can see when fixed onto a point. Visual field testing is one of the ways of assessing how much vision there is in each eye and how much vision might have been lost over time. Defects in the visual field are seen in diseases such as glaucoma, which is one of the leading causes of blindness. VF tests should be performed regularly during outpatient appointments to help monitor these conditions before they progress. Monitoring individuals with VF defects presents a large strain on eye services at University Hospitals Southampton (UHS). Recently an Apple iPad-based application called 'VisualFields easy' has been developed that could be used at home to test visual fields, opening up the possibility of remote monitoring. This is especially significant since the onset of the COVID-19 pandemic which has left outpatient clinics across the UK with large patient backlogs. However, it's not understood yet to what level of accuracy this iPad test can be performed by untrained people and whether the results of this test are medically reliable. This study will measure if there's a correlation between iPad-based VF measurements and the standard clinic-based measurements taken by professionals. The potential of this app to be used at home will also be assessed with a usability questionnaire. These measurements will be taken during routine eye and neurology outpatient clinics at UHS. Home-based VF testing could allow those who weren't able to access eye services during the pandemic greater follow-up and monitoring. Through providing regular, up-to-date information on a patient's condition and progress, VF tests at home may improve outcomes. The investigators also foresee the benefits of this app on NHS clinical services, with the potential of reduced outpatient appointments and waiting times thus easing pressure on the NHS.
The purpose of this research is to study the effectiveness and patient experience when measuring visual fields using virtual reality goggles.
The goal of this study is to determine reference values of the VisuALL Field Test in pediatric population. Standard Automatic Perimetry (SAP) is the gold standard test for the evaluation of different diseases of the visual pathway like glaucoma. Its main goal is to measure the differential light sensitivity at several locations in the central field of vision. Nevertheless, the accuracy of the current devices is limited by several factors such as the inherent inconsistency of the psychophysical test, stressful examinations and frequency of testing. Several devices have been developed since the advent of the Octopus Perimeter and the Humphrey Field Analyzer (HFA) in an effort to improve the early detection of glaucoma. Several of these visual field test variants are implemented using laptops, iPads, and virtual reality headsets. These modalities bring portability but lack fixation methods, environmental control, and hardware standardization. These deficiencies may limit their wide usage. The main goal of this study is to develop an initial pediatric reference database of a novel visual field test ecosystem that takes advantage of a Head Mounted Device (HMD).
This study seeks to test whether these over-the-counter nutritional supplements have an impact on patients' performance during visual field testing.