Clinical trials: Vision; Loss, Both Eyes
Vision Loss Partial, Vision; Loss, Both Eyes
Effect of Visual Retraining After Stroke
This project is intended to collect data using standard clinical tests and psychophysics to quantify the effect of visual cortical damage on the structure of the residual visual system, visual perception, spatial awareness, and…
- Conditions
- Vision Loss Partial, Vision; Loss, Both Eyes, Hemianopia Homonymous, Hemianopia
- Trial name
- urochester (NCT06121219)
- Testing
- Training in the Blind Field
- Where
- United States
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Rochester
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
Blindness Congenital
Comparison of Balance and Coordination Parameters of Visually Impaired and Healthy Individuals
The aim of this [observational study] is to examine balance in multiple aspects by comparing balance, coordination, and gait parameters between congenitally blind individuals and healthy individuals with multiple scales.
- Trial name
- NCT06687915
- Where
- Turkey (Türkiye)
- Volunteers
- 38 people, healthy volunteers welcome
- Sponsor
- Bahçeşehir University
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
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
Trauma, Infections
Ophthalmological Emergencies and COVID-19 Pandemia
To analyze how the COVID 19 pandemia has affected the patient's accesses to the Ophthalmological Emergency Department of a tertiary referral center in northern Italy, during the lockdown period.
- Conditions
- Trauma, Infections, Vision; Loss, Both Eyes
- Trial name
- NCT05065788
- Testing
- data collection
- Where
- Italy
- Volunteers
- 500 people
- Sponsor
- Università degli Studi dell'Insubria
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
Refractive Error - Myopia Axial, Astigmatism
Refractive Accuracy of "2WIN" and Portable Autorefractors
Youth and some adults have photoscreening refractions and hand-held auto refraction before cycloplegia refraction during new and follow up eye examinations.
- Conditions
- Refractive Error - Myopia Axial, Astigmatism, Accomodation, Visual Impairment
- Trial name
- NCT04249505
- Testing
- "2WIN" Photoscreener, "Plusoptix A12", "Retinomax"
- Where
- United States
- Volunteers
- 708 people, healthy volunteers welcome
- Sponsor
- Alaska Blind Child Discovery
Moderate or Severe Vision Impairment, Both Eyes
The Effectiveness of Portable Electronic Vision Enhancement Systems (p-EVES) for Near Vision in Visual Impairment
Over 1 million people in the UK suffer from untreatable visual impairment, many of them elderly. The major complaint of visually impaired people is their inability to carry out simple tasks, especially those involving reading.
- Trial name
- p-EVES (NCT01701700)
- Testing
- portable electronic magnifier, optical aids
- Where
- United Kingdom
- Volunteers
- 100 people
- Sponsor
- Manchester University NHS Foundation Trust
Presbyopia
Using AGN-190584 in Subjects Utilizing Single -Use Daily, Contact Lenses
AGN-190584 has gone through many clinical trials showing its safety and effectiveness in individuals from 40-55 years of age. There has been no published data on the use of this product in individuals corrected with contact…
- Trial name
- NCT05624320
- Testing
- AGN-190584
- Volunteers
- healthy volunteers welcome
- Sponsor
- Gordon Schanzlin New Vision
Non-24 Hour Sleep-Wake Disorder, Blindness
Efficacy and Safety of Circadin for Non-24 Hour Sleep-Wake Disorder in Totally Blind Subjects
The aim of this placebo-controlled randomized study was to evaluate the efficacy of Circadin™ 2 mg in improving total night sleep duration and stabilizing the circadian clock phase in totally blind subjects with non-24 hour…
- Trial name
- NCT00972075
- Testing
- melatonin (Circadin)
- Where
- 2 sites in United States
- Volunteers
- 13 people
- Sponsor
- Neurim Pharmaceuticals Ltd.
Non-24-Hour Sleep-Wake Disorder
Efficacy and Safety of Tasimelteon Compared With Placebo in Totally Blind Subjects With Non-24-Hour Sleep-Wake Disorder
The purpose of this study is to evaluate the efficacy and safety of a six month double-mask treatment of tasimelteon or placebo in male and female subjects with Non-24-Hour Sleep-Wake Disorder
- Trial name
- NCT01163032
- Testing
- tasimelteon
- Where
- 28 sites in United States, Germany
- Volunteers
- 136 people
- Sponsor
- Vanda Pharmaceuticals