Clinical trials: Visual Loss
Hypotension,Controlled
Correlation Analysis of the Effects of Management Pressure Goals and Control Volume Goals in Patients in Spinal Surgery
The investigators study 160 patients undergoing spinal surgery.Participants will be randomly divided into study group and control group.The study group will receive controlled hypotension by nitroglycerin and be divided into 3…
- Trial name
- NCT03917004
- Testing
- Nitroglycerin
- Where
- China
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- Liang Bing
Blindness
Sensory Substitution and Brain Plasticity Following Vision Loss
The goal of this clinical investigation is to learn how the brain responds when visual information is converted into patterns of sound or touch in blind and sighted participants.
- Trial name
- SenSubMRI (NCT07450677)
- Testing
- Electrotactile display (BrainPort), Vision-to-sound converter (AI Sight)
- Where
- 2 sites in United States
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Stanford 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
Periodontal Diseases, Periodontal Pocket
Comparison of Gingival Flap Procedure Using Conventional Surgical Loupes vs. Videoscope for Visualization
This study is being performed to compare different methods of visualization during routine gum surgery. The gum surgery is standard of care.
- Conditions
- Periodontal Diseases, Periodontal Pocket, Periodontitis, Periodontal Inflammation
- Trial name
- NCT05932017
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Texas A&M University
Concussion, Eye
The Effects of Concussion on Gait and Posture in Individuals With Peripheral Vision Loss
Changes in gait and balance often occur in individuals who have suffered a concussion. In addition, a subset of concussed individuals also experience peripheral vision loss.
- Trial name
- NCT05948501
- Where
- 2 sites in United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Gaylord Hospital, Inc
Glaucoma, Glaucoma Suspect
Philadelphia Telemedicine Glaucoma Detection and Follow-Up Study
The goal is to conduct a 5-year prospective, randomized controlled trial to test an innovative, community-based intervention using posterior and anterior fundus photography of the optic nerve and macula and intraocular eye…
- Conditions
- Glaucoma, Glaucoma Suspect, Diabetic Retinopathy, Ocular Hypertension
- Trial name
- NCT02390245
- Testing
- Free Eye Screenings, Enhanced Intervention, Usual Care
- Where
- United States
- Volunteers
- 906 people, healthy volunteers welcome
- Sponsor
- Wills Eye
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)
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
Central Visual Impairment, Macular Degeneration
Factors in Learning And Plasticity: Healthy Vision
A greater understanding of plasticity after central vision loss can inform new therapies for treating low vision and has the potential to benefit millions of individuals suffering from low vision.
- Trial name
- FLAP (NCT05439759)
- Testing
- Condition 1: Training visual sensitivity, Condition 2: Training spatial integration, Condition 3: Training spatial attention
- Where
- 2 sites in United States
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- University of Alabama at Birmingham
Rotator Cuff Tears, Hemorrhage, Surgical
Effect of Intravenous Tranexamic Acid on Visual Clarity During Shoulder Arthroscopy in the Beach Chair Position
Shoulder arthroscopy offers numerous advantages and has led to a continuous increase in procedural complexity. Adequate intraoperative visual clarity is essential for successful performance of the procedure and is primarily…
- Conditions
- Rotator Cuff Tears, Hemorrhage, Surgical, Shoulder Injuries
- Trial name
- NCT05397652
- Testing
- Tranexamic Acid Injectable Product
- Where
- Croatia
- Volunteers
- 121 people, healthy volunteers welcome
- Sponsor
- Nikola Matejcic
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
Age-related Macular Degeneration
Visual Remapping to Aid Reading With Field Loss
Reading performance in patients with Central Vision Loss and age matched controls with artificial scotomas will be measured with and without different kinds of remapping of missing text to different parts of the visual field.
- Trial name
- NCT03848663
- Testing
- Traditional Remapping, Personalized Remapping
- Where
- United States
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- University of Minnesota
Vision Loss Partial, Hemianopia
Effect of Visual Retraining on Visual Loss Following Visual Cortical Damage
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, Hemianopia, Hemianopia Homonymous, Quadrantanopia
- Trial name
- NCT05098236
- Testing
- Training in the Blind Field, Training in the Sighted Field
- Where
- United States
- Volunteers
- 280 people, healthy volunteers welcome
- Sponsor
- University of Rochester
Retinal Vein Occlusion, Retinal Vein Thrombosis
Atorvastatin for the Treatment of Retinal Vein Occlusion
The ATORVO study is designed to determine whether atorvastatin (Lipitor) can improve vision, when compared to placebo
- Conditions
- Retinal Vein Occlusion, Retinal Vein Thrombosis, Central Retinal Vein Occlusion, Branch Retinal Vein Occlusion
- Trial name
- ATORVO (NCT00517257)
- Testing
- Atorvastatin
- Where
- Canada
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- University of Toronto
Night Vision Complaints, Decrease in Night Vision
The Safety and Efficacy of Phentolamine Mesylate Ophthalmic Solution in Subjects With Severe Night Vision Disturbances
The objectives of this study are: To evaluate the efficacy of phentolamine mesylate 0.5% and 1.0% ophthalmic solution (Nyxol) in the treatment of night vision complaints, including reduced contrast sensitivity To evaluate the…
- Conditions
- Night Vision Complaints, Decrease in Night Vision, Disturbance; Vision, Loss
- Trial name
- NCT01703559
- Testing
- Phentolamine Mesylate Ophthalmic Solution 1.0%, Phentolamine Mesylate Ophthalmic Solution 0.5%
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Opus Genetics, Inc
Obesity
Piloting Visual Chat in Internet Obesity Treatment
CHAT is an internet-based weight loss research program designed for women with overweight or obesity who want to lose weight through dietary change and increased physical activity.
- Trial name
- CHAT (NCT03491293)
- Testing
- Behavioral Weight Loss + Text, Behavioral Weight Loss + Video
- Where
- 2 sites in United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- University of Vermont
Hearing Loss, Hearing Loss, Age-Related
Sight and Hearing Investigation Into Effects on Delirium
The goal of this observational study is to learn about sensory loss in hospital patients with delirium. The main questions it aims to answer are: Are hearing and vision loss related to increased risk of having delirium? Do…
- Conditions
- Hearing Loss, Hearing Loss, Age-Related, Hearing Disability, Delirium
- Trial name
- SHIELD (NCT06176625)
- Testing
- Communication Signage, Amplifier Use
- Where
- United States
- Volunteers
- 1,543 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins University
Oral Proprioceptive Sensitivity and Upper Limb Kinesthetic Acuity
Oral Proprioceptive Sensitivity and Upper Limb Kinesthetic Acuity: A Pilot Study
The goal of this observational study is to investigate whether differences in oral proprioceptive sensitivity are associated with differences in kinesthetic acuity of the upper limbs in children.
- Trial name
- NCT07854314
- Testing
- Upper-Limb Kinesthetic Acuity Assessment, Effect of Auditory Stimulation on Visual Perception, Oral Proprioceptive Sensitivity Assessment
- Where
- Spain
- Volunteers
- 33 people, healthy volunteers welcome
- Sponsor
- Sophie Román Richon
Parkinson Disease
" Visual Characterization of Parkinson's Patients and Oculomotor or Perceptual Therapy"
Parkinson's disease (PD) is the second most common neurodegenerative condition worldwide, characterised by motor symptoms, but with other symptoms such as visual impairment.
- Trial name
- NCT06032130
- Testing
- Clinical measurements, Oculomotor or perceptual therapy
- Where
- Spain
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- University of Valencia
Blood Loss
The MAR Method Versus the Visual Estimation Method in Predicting External Blood Loss
The goal of this educational clinical trial is to determine whether the MAR method is more effective than the Visual Estimation method for estimating blood loss.
- Trial name
- NCT06855472
- Testing
- The MAR method
- Where
- 2 sites in Turkey (Türkiye)
- Volunteers
- 237 people, healthy volunteers welcome
- Sponsor
- Betül Akbuğa Özel