Clinical trials: Visual Impairments
Visual Impairment
Cell Phone Application for Vision Assessment
The purpose of this study is to evaluate how visual acuity assessed with Peek Acuity (a cell phone application to check visual acuity) among preschool and school-aged children 3 to less than18 years of age (1) compares to the…
- Trial name
- NCT03212222
- Testing
- Peek Acuity, Standard Visual Screening
- Where
- United States
- Volunteers
- 111 people, healthy volunteers welcome
- Sponsor
- Duke University
Cortical Blindness, Stroke Ischemic
Mechanisms of Visual Restoration After Occipital Stroke
This project will collect brain imaging data to quantify the effects of early visual cortex damage and visual training interventions on the structure and function of the residual visual system.
- Conditions
- Cortical Blindness, Stroke Ischemic, Vision Loss Partial, Visual Fields Hemianopsia
- Trial name
- MOVROS (NCT07134777)
- Testing
- MRI
- Where
- United States
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Rochester
Vision Impairment, Eye Diseases
The Proactive Ophthalmic Examination Cohort
The Proactive Ophthalmic Examination Cohort of Older Adults is a prospective cohort study recruiting community-dwelling older adults aged 65 years or older.
- Trial name
- POEC (NCT05851287)
- Where
- China
- Volunteers
- 5,000 people, healthy volunteers welcome
- Sponsor
- Zhongshan Ophthalmic Center, Sun Yat-sen 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
Eye Diseases
iSCREEN-study: Online Nurse-assisted Eye-screening in Home Healthcare
The aim of this study is to investigate the cost-effectiveness of a nurse-assisted online eye-screening in home healthcare in reducing eye complaints.
- Trial name
- NCT06058637
- Testing
- Eye screening
- Where
- Netherlands
- Volunteers
- 234 people, healthy volunteers welcome
- Sponsor
- Amsterdam UMC, location VUmc
Child Sexual Abuse, Disability, Vision
The Effect of Nurse-Led Body Protection Education in Students With Visual Impairments
In the study, it was aimed to examine the effect of nurse-led body protection education on the sexual abuse knowledge levels of students with visual impairments.
- Trial name
- NCT06497803
- Testing
- Nurse-Led Body Protection Education, Reminder Education Brochure
- Where
- Turkey (Türkiye)
- Volunteers
- 53 people, healthy volunteers welcome
- Sponsor
- Marmara University
Central Vision Loss From Macular Diseases
Training to Modify Fixational Eye Movements for Optimizing Visual Performance in People With Central Vision Loss
People with central vision loss almost all have exaggerated fixational eye movements when compared with people with normal vision (e.g. larger amplitudes of microsaccades and ocular drifts).
- Trial name
- NCT06670989
- Testing
- Fixation training
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- National Eye Institute (NEI)
Vision Loss Night
Comparison of Different Refraction Measurements in Adults
The combatant is likely to carry out missions any time, any place, day or night. The very strong degradation of natural vision performance in these conditions justifies the use of visual replacement means, based on optronic…
- Trial name
- REFRACT (NCT04434521)
- Testing
- Questionnaire, Eye examination
- Where
- France
- Volunteers
- 17 people, healthy volunteers welcome
- Sponsor
- Direction Centrale du Service de Santé des Armées
Schizophrenia, Schizoaffective Disorder
NEURO-COGS: Neurometabolic Mechanisms of Cognitive Training in Schizophrenia
This study will examine brain metabolic and excitatory/inhibitory mechanisms related to cognitive and visual functioning in adults with schizophrenia and healthy control participants.
- Conditions
- Schizophrenia, Schizoaffective Disorder, Cognitive Impairment, Visual Impairment
- Trial name
- NCT07788755
- Testing
- Perceptual Discrimination Training, Cognitive Control Training
- Where
- United States
- Volunteers
- 168 people, healthy volunteers welcome
- Sponsor
- University of Minnesota
Central Visual Impairment, Peripherical Visual Impairment
A Study of Taste- and Olfactory-Evoked Potentials in Patients With Visual Impairment: Taste, Smell, and Vision
Visual impairment, whether central or peripheral, may influence the plasticity of other sensory modalities, such as taste and smell.
- Conditions
- Central Visual Impairment, Peripherical Visual Impairment, Macular Retinal Dystrophy, Peripherical Macular Dystrophy
- Trial name
- GOUSTAVIS (NCT07707219)
- Testing
- Taste and smell evaluation, Recording of evoked potentials (EP)
- Where
- France
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Centre Hospitalier Universitaire Dijon
Vision Impairment, Blindness
Assessment of the Validity, Reliability, and Feasibility of Two Smartphone Applications for Testing the Visual Acuity
Visual acuity (VA) is the most common measure of visual function globally. In clinical settings and during screening events, VA is an important measure to quantify changes in vision over time.
- Trial name
- NCT04936100
- Testing
- Assessment of distance and near visual acuity using "Vision Screening module" of "Easy Vision" application, Assessment of distance and near visual acuity using "Test Yourself module" of "Easy Vision" application, Assessment of distance and near visual acuity using "Peek Acuity" application
- Where
- Iran
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Shahid Beheshti University of Medical Sciences
Vision Impairment and Blindness, Glaucoma
Developing and Testing a Model to Identify Preventive Vision Loss Among Older Patients in General Practice
In this cohort study, the investigators will test vision screenings in Danish general practice for patients over 70 years of age with minimum one chronic condition.
- Conditions
- Vision Impairment and Blindness, Glaucoma, Age-Related Macular Degeneration, Cataract
- Trial name
- DETECT (NCT07015034)
- Testing
- focus on vision impairment in older patients in general practice
- Where
- 2 sites in Denmark
- Volunteers
- 460 people, healthy volunteers welcome
- Sponsor
- University of Copenhagen
AMD
Post-Approval Study of the Implantable Miniature Telescope
The objective of the PAS-01 study is to assess the safety of the intraocular as measured by the cumulative incidence of patients who within 5 years after implantation experience persistent vision-impairing corneal edema (corneal…
- Trial name
- PAS-01 (NCT01757132)
- Testing
- Implantable Miniature Telescope
- Where
- 16 sites in United States
- Volunteers
- 770 people, healthy volunteers welcome
- Sponsor
- VisionCare, Inc.
Blindness
Evaluation of the Efficacy of the BrainPort Vision Pro on the Performance of Daily Activities in the Profoundly Blind French Population
The purpose of the study is to evaluate the effectiveness and safety of the BrainPort® Vision Pro, an electronic oral assistive device, in the performance of daily tasks by French persons who have residual vision limited to light…
- Trial name
- NCT04725760
- Testing
- BrainPort Vision Pro
- Where
- 7 sites in France
- Volunteers
- 125 people, healthy volunteers welcome
- Sponsor
- Wicab
Disabilities, Visual Impairment and Blindness (Excl Colour Blindness)
Study Protocol: The Jerte Valley as an Inclusive Outdoor Classroom. Smart and Active Tourism.
To promote the inclusion of people with disabilities, an outdoor intervention will be conducted involving physical activities with adolescents with and without disabilities.
- Trial name
- NCT07609459
- Testing
- Rafting, canoeing and kayaking, Divulgation
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Universidad de Extremadura
Persons With Visual Disabilities, Breast Neoplasms
Breast and Cervical Cancer Awareness Training in Visually Impaired Women
This quasi-experimental study aims to determine whether a breast and cervical cancer awareness training program can increase participation in cancer screening among women with visual impairments.
- Conditions
- Persons With Visual Disabilities, Breast Neoplasms, Uterine Cervical Neoplasms, Awareness
- Trial name
- GORSEM (NCT07541859)
- Testing
- Cancer Screening Awareness Education for Visually Impaired Women
- Where
- 2 sites in Turkey (Türkiye)
- Volunteers
- 74 people, healthy volunteers welcome
- Sponsor
- Marmara University
Hypoxia, Altitude
Colour Vision Impairment During Acute Hypobaric Hypoxia
This study analyses the impairment of colour vision during hypobaric hypoxia in volunteers of different groups.
- Trial name
- NCT05584813
- Testing
- Hypobaric Hypoxia
- Where
- Germany
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Universitätsklinikum Köln
Visual Impairment
Virtual Assistance for Daily Living: Neurophysiological and Functional Effects in Low Vision
This study aims to investigate how visual impairment affects neurophysiological and biomechanical responses during real-world navigation and daily activities, with a focus on the rehabilitative feasibility and impact of assistive…
- Trial name
- NCT07442461
- Testing
- VIS4ION Platform
- Where
- United States
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- NYU Langone Health