Clinical trials: Visual Field Defect, Peripheral
Visual Field Defect, Peripheral, Stroke
Improving Visual Field Deficits With Noninvasive Brain Stimulation
This is a randomized, pilot interventional study in participants with visual field deficit (VFD) caused by cortical lesion. Damage to the primary visual cortex (V1) causes a contra-lesional, homonymous loss of conscious vision…
- Conditions
- Visual Field Defect, Peripheral, Stroke, Visual Impairment, Hemianopsia
- Trial name
- NCT05085210
- Testing
- transcranial random noise stimulation (tRNS), Computer Based Visual Training, Virtual Reality Based Visual Training
- Where
- United States
- Volunteers
- 24 people
- Sponsor
- Beth Israel Deaconess Medical Center
Visual Field Defect, Peripheral, Visual Field Defect, Nasal Step
Patient Performance and Acceptance of Virtual Reality Visual Field Devices
The purpose of this research is to study the effectiveness and patient experience when measuring visual fields using virtual reality goggles.
- Conditions
- Visual Field Defect, Peripheral, Visual Field Defect, Nasal Step, Visual Field Defect, Paracentral Scotoma of Both Eyes
- Trial name
- NCT04786886
- Testing
- VIrtual Reality Visual Field Exam
- Where
- United States
- Volunteers
- 58 people
- Sponsor
- University of Miami
Vision Loss Partial, Vision; Loss, Both Eyes
Understanding Visual Processing After Occipital Stroke
The purpose of this study is to investigate how visual orientation discrimination and metacognition (i.e., perceptual confidence) are affected by occipital stroke that causes hemianopia and quadrantanopia in adults.
- Conditions
- Vision Loss Partial, Vision; Loss, Both Eyes, Hemianopia, Homonymous, Hemianopia
- Trial name
- NCT06352086
- Sponsor
- University of Rochester
Visual Field Defect, Peripheral
Virtual Reality Visual Field Testing as an Alternative in Childhood Eye Disease
The purpose of this study is to test a new way of measuring the peripheral vision (called a visual field test) using a device which can be worn as goggles rather than being a large instrument the patient must sit at.
- Trial name
- NCT05150197
- Testing
- VisuALL, Humphrey Visual Field
- Where
- United States
- Volunteers
- 1,000 people, healthy volunteers welcome
- Sponsor
- Duke University
Visual Field Defect, Stroke
Home-based Vision Rehabilitation Guided by Brain Imaging
The BRIGHT (Behavioral Rehabilitation Through Image-Guided Home-based Training) study aims to evaluate the effectiveness of image-guided, home-based perceptual training at improving visual performance in individuals with visual…
- Conditions
- Visual Field Defect, Stroke, Hemianopia Homonymous, Quadrantanopia
- Trial name
- BRIGHT (NCT07635329)
- Testing
- High-level perceptual learning-based training, Low-level perceptual learning-based training
- Where
- United States
- Volunteers
- 100 people
- Sponsor
- Georgetown University
Stroke, Ischemic, Quadrantanopia
Visual Rehabilitation After Occipital Stroke
This research aims to examine changes in plastic potential of the visual system with time from stroke affecting primary visual cortex.
- Conditions
- Stroke, Ischemic, Quadrantanopia, Vision Loss Partial, Visual Field Defect, Peripheral
- Trial name
- NCT04798924
- Testing
- Subacute Training in the intact field, Subacute Training in the blind field, Chronic Training in the blind field
- Where
- United States
- Volunteers
- 60 people
- Sponsor
- University of Rochester
Retinitis Pigmentosa (RP), Rod Cone Dystrophy
Brain Stimulation Effects on Orientation and Mobility Skills in Adults With Vision Impairment
This pilot clinical trial evaluates whether non-invasive brain stimulation improves the orientation and mobility (O\&M) skills of individuals with constricted visual fields in both eyes. The study is composed of three visits.
- Conditions
- Retinitis Pigmentosa (RP), Rod Cone Dystrophy, Visually Impaired Persons, Peripheral Visual Field Defect of Both Eyes
- Trial name
- NCT07341763
- Testing
- Active hf-tRNS.
- Where
- Canada
- Volunteers
- 20 people
- Sponsor
- University of Waterloo
Hemianopia, Homonymous, Tunnel Vision
Feasibility Tests for Various Prism Configurations for Visual Field Loss
The investigators will develop and test different configurations of high-power prisms to expand the field of vision of patients with visual field loss to assist them with obstacle detection when walking.
- Conditions
- Hemianopia, Homonymous, Tunnel Vision, Visual Field Defect, Peripheral, Visual Field Constriction Bilateral
- Trial name
- NCT04424979
- Testing
- High power prisms
- Where
- United States
- Volunteers
- 10 people
- Sponsor
- Massachusetts Eye and Ear Infirmary
Visual Field Defect, Peripheral
Establishing a Normative Database in Pediatric Population of the Head-mounted visuALL Field Analyzer
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…
- Trial name
- NCT04175444
- Testing
- VisuALL Field Analyzer, Humphrey Field Analyzer
- Where
- United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University Medical Center
Visual Field Defect, Peripheral, Glaucoma, Open-Angle
Nutritional Supplements and Performance During Visual Field Testing (B3 Vitamin)
This study seeks to test whether these over-the-counter nutritional supplements have an impact on patients' performance during visual field testing.
- Trial name
- NCT03797469
- Testing
- Vitamin B3, Pyruvate
- Where
- United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Columbia University
Stroke, Ischemic, Hemianopia, Homonymous
Statistical Learning as a Novel Intervention for Cortical Blindness
This project aims to develop a novel visual training paradigm for use in visually-intact participants and those sufferings from stroke-induced visual impairments.
- Conditions
- Stroke, Ischemic, Hemianopia, Homonymous, Hemianopsia, Occipital Lobe Infarct
- Trial name
- NCT06578117
- Testing
- Vision Training and Learning Task
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Rochester
Stroke, Ischemic, Quadrantanopia
Vision Loss Impact on Navigation in Virtual Reality
The purpose of this research is to better understand the impact of cortically-induced blindness (CB) and the compensatory strategies subjects with this condition may develop on naturalistic behaviors, specifically, driving.
- Conditions
- Stroke, Ischemic, Quadrantanopia, Hemianopsia, Homonymous, Hemianopia, Homonymous
- Trial name
- NCT06047717
- Testing
- Virtual Reality Driving Task
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University of Rochester
Visual Field Defect, Stroke
Vision Improvement Through Behavioral Rehabilitation And Neuroplasticity Training
The VIBRANT (Vision Improvement through Behavioral Rehabilitation And Neuroplasticity Training) study is a prospective, double-blind, crossover design (within-subject) in participants with homonymous hemianopia-a type of visual…
- Conditions
- Visual Field Defect, Stroke, Hemianopia, Quadrantanopia
- Trial name
- VIBRANT (NCT07105358)
- Testing
- transcranial random noise stimulation (tRNS), Perceptual learning-based training
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- Georgetown University
Hemianopsia, Visual Field Defect, Peripheral
Hemianopsia Rehabilitation After Stroke or Brain Injury
In patients with hemianopsia following stroke or brain injury, we will determine if stimulating the visual field with images from a PowerPoint slide set can increase the visual field.
- Conditions
- Hemianopsia, Visual Field Defect, Peripheral, Visual Impairment
- Trial name
- NCT06241209
- Testing
- PowerPoint program visual stimulation
- Where
- Canada
- Volunteers
- 40 people
- Sponsor
- University of Alberta
Hemianopia, Hemianopsia
Collision Warning Device for Blind and Visually Impaired
This study evaluates a novel collision warning device to help people with severe vision impairment or blindness avoid collisions with obstacles.
- Conditions
- Hemianopia, Hemianopsia, Peripheral Visual Field Defect, Blindness
- Trial name
- NCT03057496
- Testing
- Collision warning device
- Where
- United States
- Volunteers
- 49 people, healthy volunteers welcome
- Sponsor
- Massachusetts Eye and Ear Infirmary
Visual Field Defect, Peripheral
Feasibility of Visual Field Screening Apps
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…
- Trial name
- VISA (NCT05169983)
- Testing
- iPad-Based Visual Field Test
- Where
- United Kingdom
- Volunteers
- 45 people
- Sponsor
- University Hospital Southampton NHS Foundation Trust
Hemianopsia, Homonymous Hemianopia
Feasibility Test of Virtual Reality Obstacle Detection for Low Vision Walking
The investigators are developing a new test of pedestrian hazard detection in virtual reality (VR) head-mounted display (HMD) headset, which shows virtual oncoming pedestrians in 3D while subjects are walking in real-world…
- Conditions
- Hemianopsia, Homonymous Hemianopia, Tunnel Vision, Visual Field Defect, Peripheral
- Trial name
- NCT05141604
- Testing
- Field expansion view
- Where
- United States
- Volunteers
- 15 people
- Sponsor
- Massachusetts Eye and Ear Infirmary