Clinical trials: Blindness
Sleep Disorder, Blindness
Melatonin Studies of Totally Blind Children
The purpose of this study is to learn more about abnormal body rhythms in blind boys and girls that keep them from falling asleep at bed-time or cause them difficulty staying alert during the day.
- Trial name
- NCT00795236
- Testing
- Melatonin
- Where
- United States
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- Oregon Health and Science University
Wolfram Syndrome, Diabetes Mellitus
A Clinical Trial of Dantrolene Sodium in Pediatric and Adult Patients With Wolfram Syndrome
Wolfram syndrome is a rare genetic disorder characterized by juvenile-onset diabetes mellitus, diabetes insipidus, optic nerve atrophy, hearing loss, and neurodegeneration.
- Conditions
- Wolfram Syndrome, Diabetes Mellitus, Optic Nerve Atrophy, Ataxia
- Trial name
- NCT02829268
- Testing
- dantrolene sodium
- Where
- United States
- Volunteers
- 21 people
- Sponsor
- Washington University School of Medicine
Macular Degeneration, Central Visual Impairment
Scotoma Perimetry Oculomotor Training
The proposed research is relevant to public health because a greater understanding of plasticity after central vision loss can inform new therapies for treating low vision and has potential to benefit millions of individuals…
- Trial name
- SPOT (NCT05456581)
- Testing
- 'Scotoma awareness' Training, Control Training
- Where
- United States
- Volunteers
- 21 people
- Sponsor
- University of Alabama at Birmingham
Problem With Vision Blindness, Intraocular Pressure
Intraocular Pressure During Abdominal Aortic Aneurysm (AAA) Repair
The objective of this study will be to answer a clinical question that has not already been investigated; that is, what are the effects of aortic infra-renal clamping and unclamping on intraocular pressure during Abdominal Aortic…
- Conditions
- Problem With Vision Blindness, Intraocular Pressure, Ischemic Optic Neuropathy
- Trial name
- NCT00450294
- Where
- Canada
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University of Manitoba
Advanced Dry Macular Degeneration
Alpha MSH in Ocular Disease
The purpose of this study is gain a better understanding of a molecule called alpha melanocyte stimulating hormone (alpha MSH) and its potential role in your retinal disease.
- Trial name
- NCT03451578
- Testing
- Alpha MSH assay
- Where
- United States
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Duke University
Myopia-Night Blindness
Evaluation of a Night Spectacle Correction Concerning an Improvement of Mesopic Vision Quality
Reduced quality of vision and glare in twilight or night are frequently mentioned complaints within the optometric examination. A reason for these problems could be a myopic refractive shift in dark light conditions, commonly…
- Trial name
- NCT02965534
- Testing
- Spectacle/Glasses
- Where
- 3 sites in Germany
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Applied Sciences Jena
Retinitis Pigmentosa, Usher Syndrome Type 2
Study to Evaluate the Efficacy Safety and Tolerability of Ultevursen in Subjects With RP Due to Mutations in Exon 13 of the USH2A Gene (Sirius)
The purpose of this study is to evaluate the efficacy safety and tolerability of ultevursen administered via intravitreal injection (IVT) in subjects with Retinitis Pigmentosa (RP) due to mutations in exon 13 of the USH2A gene.
- Conditions
- Retinitis Pigmentosa, Usher Syndrome Type 2, Deaf Blind, Retinal Disease
- Trial name
- NCT05158296
- Testing
- Ultevursen
- Where
- 15 sites in United States, Germany and 2 more
- Volunteers
- 7 people
- Sponsor
- Laboratoires Thea
Blindness
Wayfinding Information Access System for People With Vision Loss
The purpose of the project is to find out what kinds of information are most useful to visually impaired people when they are moving around indoors and what kinds of controls will make it easy for visually impaired people to…
- Trial name
- NCT00829036
- Testing
- Wayfinding Prototype
- Where
- United States
- Volunteers
- 24 people
- Sponsor
- US Department of Veterans Affairs
Homonymous Hemianopia
Clinical Trial of Multi-Periscopic Prism Glasses for Hemianopia
This clinical trial will evaluate the efficacy of two types of high-power prism glasses that provide field of view expansion for patients with homonymous hemianopia (the complete loss of half the field of vision on the same side…
- Trial name
- NCT04827147
- Testing
- Multi-Periscopic Prism (MPP) glasses, Fresnel Peripheral Prism (FPP) glasses
- Where
- 8 sites in United States
- Volunteers
- 64 people
- Sponsor
- Massachusetts Eye and Ear Infirmary
Stroke, Neurologic Disorder
Evaluation of Bioness Integrated Therapy System (BITS) Touch Screen Technology to Improve Field Awareness
The Bioness Integrated Therapy System (BITS) (Bioness Inc. Valencia, CA) Touch Screen is an FDA approved device comprised of an interactive touchscreen and diverse program options to challenge patients through the use of visual…
- Conditions
- Stroke, Neurologic Disorder, Traumatic Brain Injury, Acquired Brain Injury
- Trial name
- NCT04930822
- Testing
- Table Top Visual Intervention, Bioness Integrated Therapy System Visual Intervention
- Where
- United States
- Volunteers
- 37 people
- Sponsor
- Gaylord Hospital, Inc
Blindness
Emergency Egress and Information System for Persons With Vision Loss
The purpose of the research project is to develop and evaluate an emergency egress system for persons with visual impairment, which would use existing lighted exit signage to provide egress information at a distance of up to 100…
- Trial name
- NCT00262509
- Testing
- Egress Badge
- Where
- United States
- Volunteers
- 17 people, healthy volunteers welcome
- Sponsor
- US Department of Veterans Affairs
Anterior Ischemic Optic Neuropathy
PDE5 Inhibitor Use and Non-arteritic Anterior Ischemic Optic Neuropathy (NAION)
The primary objective of this study is to determine whether the use of PDE5 inhibitors (vardenafil, sildenafil, or tadalafil) increases the risk for the development of NAION.
- Trial name
- NCT00867815
- Testing
- Diagnostic procedures
- Where
- 13 sites in United States, Australia and 1 more
- Volunteers
- 10 people
- Sponsor
- Bayer
Blindness
Blind Elderly Melatonin Treatment Study
The primary focus of this five-year study will be to optimize the melatonin dosing regimen for synchronizing the body clocks of elderly blind individuals to the 24-hour day.
- Trial name
- NCT00692094
- Testing
- Melatonin
- Where
- United States
- Volunteers
- 12 people
- Sponsor
- Oregon Health and Science University