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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Color vision Clear all
Completed No phase listed Observational

Hyperopia Detection GCK With Glow Fixation

NCT04297969
View directory record Official record
Conditions
Amblyopia Bilateral, Hyperopia of Both Eyes, Astigmatism Bilateral, Accommodation Disorder
Interventions
objective pediatric vision screen "GCK glow fixation"
Diagnostic Test
Lead sponsor
Alaska Blind Child Discovery
Other
Eligibility
1 Month to 20 Years
Enrollment
133 participants
Timeline
2019 – 2020
U.S. locations
1
States / cities
Anchorage, Alaska
Source: ClinicalTrials.gov public record
Updated Oct 18, 2020 · Synced Sep 6, 2026, 4:30 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

VR to Reduce Pain/Anxiety During Painful Procedures

NCT04268901
View directory record Official record
Conditions
Phlebotomy, Orthopedics, Radiology, Pain, Anxiety, Virtual Reality, Allergy, Gastroenterology
Interventions
Samsung Gear VR, Merge VR, Oculus Go
Device
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
7 Years to 21 Years
Enrollment
700 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 26, 2023 · Synced Sep 6, 2026, 4:30 AM EDT
Recruiting No phase listed Observational

Longitudinal Natural History Study of Retinal Function in Eyes of Patients With Diabetes

NCT07270133
View directory record Official record
Conditions
Diabetic Retinal Disease
Interventions
Visual Acuity, Reading Speed, Visual Field testing, Contrast sensitivity, Electroretinography (ERG) and pupillography in light- and dark-adapted states, Ultrawide field-color photograph, Ultrawide field-Fluorescein angiogram, Optical coherence tomography, Optical coherence tomography- Angiography
Diagnostic Test · Other
Lead sponsor
Jaeb Center for Health Research
Other
Eligibility
18 Years and older
Enrollment
450 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2032
U.S. locations
4
States / cities
Augusta, Georgia • Boston, Massachusetts • Detroit, Michigan + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Sep 6, 2026, 4:30 AM EDT
Completed Not applicable Interventional

App-Based Mindfulness Meditation for People of Color Who Experience Race-Related Stress

NCT05027113
View directory record Official record
Conditions
Stress, Psychological, Anxiety, Depression, Rumination, Emotional Regulation, Mindfulness, Self-Compassion, Emotional Distress
Interventions
Mindfulness meditation
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
155 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 24, 2023 · Synced Sep 6, 2026, 4:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Visual Activity Evoked by Infrared in Humans After Dark Adaptation

NCT02909985
View directory record Official record
Conditions
Age Related Macular Degeneration, Retinitis Pigmentosa, Congenital Stationary Night Blindness, Colorblindness
Interventions
Tungsten halogen light with narrow bandpass filters
Other
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Dec 12, 2024 · Synced Sep 6, 2026, 4:30 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Repeatability and Reproducibility of the IOLMaster 700 Vers 1.70 and Agreement With IOLMaster 700 Vers. 1.50 and Pentacam

NCT03518775
View directory record Official record
Conditions
Cornea
Interventions
Biometry
Device
Lead sponsor
Carl Zeiss Meditec, Inc.
Industry
Eligibility
22 Years and older
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 30, 2018 · Synced Sep 6, 2026, 4:30 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Perception, Sensation, Cognition and Action in Humans

NCT03407066
View directory record Official record
Conditions
Normal Physiology
Interventions
Not listed
Lead sponsor
National Eye Institute (NEI)
NIH
Eligibility
13 Years to 65 Years
Enrollment
10,200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2035
U.S. locations
2
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 30, 2026 · Synced Sep 6, 2026, 4:30 AM EDT
Suspended Early Phase 1 Interventional

PBA Use for Treatment of ATF6-/- Patients

NCT04041232
View directory record Official record
Conditions
ACHROMATOPSIA 7, Achromatopsia
Interventions
PBA
Drug
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Sep 6, 2026, 4:30 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Sensory Adapted Dental Environments to Enhance Oral Care for Children With and Without Dental Fear and Anxiety

NCT06912854
View directory record Official record
Conditions
Dental Fear and Anxiety
Interventions
Sensory Adapted Dental Environment, Video-based Modeling
Other
Lead sponsor
University of Southern California
Other
Eligibility
6 Years to 12 Years
Enrollment
312 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 1, 2025 · Synced Sep 6, 2026, 4:30 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Glaucoma Screening to Enhance At-Risk Californians' Health

NCT06854198
View directory record Official record
Conditions
Glaucoma
Interventions
Glaucoma screening with optical coherence tomography (OCT), color fundus photography, and tonometry, Educational Brochure
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
50 Years and older
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
2
States / cities
Oakland, California • San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 6, 2026, 4:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Enhancing Reading Skills in 1st Grade Children

NCT03644914
View directory record Official record
Conditions
Literacy
Interventions
10-week Reading Program
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
6 Years to 7 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 8, 2019 · Synced Sep 6, 2026, 4:30 AM EDT
Terminated Not applicable Interventional Results available

EUS-CNB Versus EUS-SINK for Diagnosis of Upper Gastrointestinal (UGI) Subepithelial Tumors

NCT02282111
View directory record Official record
Conditions
Esophageal Subepithelial Lesions
Interventions
22-gauge Procore needle (ProCore, Cook Medical Inc., Winston-Salem, NC), conventional needle-knife sphincterotome (Microknife XL; Boston Scientific Inc, Natick, Mass)
Device
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 100 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 8, 2018 · Synced Sep 6, 2026, 4:30 AM EDT
Recruiting No phase listed Observational

Virtual Reality (VR) for Interventional Radiology (IR) Procedures

NCT07427862
View directory record Official record
Conditions
Pain, Procedural Anxiety
Interventions
Meta Oculus Quest Pro, Pico 4, Pico G3
Device
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
8 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 8, 2026 · Synced Sep 6, 2026, 4:30 AM EDT
Terminated Phase 2 Interventional

Nanocrystalline Gold to Treat Remyelination Failure in Chronic Optic Neuropathy In Multiple Sclerosis

NCT03536559
View directory record Official record
Conditions
Relapsing Remitting Multiple Sclerosis, Optic Neuropathy, Optic; Neuritis, With Demyelination
Interventions
CNM-Au8, Placebo
Drug
Lead sponsor
Clene Nanomedicine
Industry
Eligibility
18 Years to 55 Years
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Apr 2, 2023 · Synced Sep 6, 2026, 4:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

VR to Reduce Pain/Anxiety During IV Starts

NCT04942561
View directory record Official record
Conditions
Radiology
Interventions
Samsung Gear VR, Merge VR
Device
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
10 Years to 21 Years
Enrollment
107 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 30, 2021 · Synced Sep 6, 2026, 4:30 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Emotional Cognition: Establishing Constructs and Neural-Behavioral Mechanisms in Older Adults With Depression

NCT05966532
View directory record Official record
Conditions
Major Depressive Disorder (MDD), Healthy Adult Volunteer
Interventions
Hot Cognitive Task, Cold cognitive tasks, Structural magnetic resonance imaging (sMRI), Magnetoencephalography imaging (MEG), four self-report forms per the requirement of the NIH Common Data Elements project, Four self-report measures to assess interpersonal functioning, Clinical assessments, ATHF
Behavioral · Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
21 Years to 80 Years
Enrollment
276 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
2
States / cities
Arlington, Texas • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jul 29, 2026 · Synced Sep 6, 2026, 4:30 AM EDT
Suspended No phase listed Observational Accepts healthy volunteers

Autostereoscopic Dynamic Near Vision Testing

NCT04606355
View directory record Official record
Conditions
Visual Suppression, Amblyopia, Color Vision Defects
Interventions
Visual Acuity, stereopsis, Color vision
Diagnostic Test
Lead sponsor
Alaska Blind Child Discovery
Other
Eligibility
1 Year to 95 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2024
U.S. locations
1
States / cities
Anchorage, Alaska
Source: ClinicalTrials.gov public record
Updated Jul 30, 2024 · Synced Sep 6, 2026, 4:30 AM EDT
Completed Not applicable Interventional

Efficacy and Mechanisms of Virtual Reality Treatment of Phantom Leg Pain

NCT05296265
View directory record Official record
Conditions
Phantom Limb Pain
Interventions
VR treatment for phantom limb pain
Behavioral
Lead sponsor
Albert Einstein Healthcare Network
Other
Eligibility
18 Years to 100 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
3
States / cities
Elkins Park, Pennsylvania • Philadelphia, Pennsylvania • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 2, 2025 · Synced Sep 6, 2026, 4:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

COVID-19 Health Messaging to Underserved Communities

NCT04371419
View directory record Official record
Conditions
Coronavirus
Interventions
Messaging
Behavioral
Lead sponsor
National Bureau of Economic Research, Inc.
Other
Eligibility
18 Years and older
Enrollment
14,267 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 26, 2021 · Synced Sep 6, 2026, 4:30 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety Study Looking at the Effects of Stendra on Vision

NCT02033200
View directory record Official record
Conditions
Vision
Interventions
Stendra 200 mg, Placebo
Drug
Lead sponsor
VIVUS LLC
Industry
Eligibility
18 Years to 45 Years · Male only
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Mar 12, 2015 · Synced Sep 6, 2026, 4:30 AM EDT
Completed Not applicable Interventional

Canine Assisted Therapy to Reduce Emergency Care Provider Stress

NCT03628820
View directory record Official record
Conditions
Stress, Anxiety
Interventions
Dog Therapy, Coloring
Behavioral
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Feb 16, 2020 · Synced Sep 6, 2026, 4:30 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluating Color Perception Under LED Red/Green and Green Dominant Light

NCT01927536
View directory record Official record
Conditions
Color Blindness, Acquired
Interventions
White LED Flashlight, Red/Green Green Dominant LED Flashlight
Device
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 66 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2019
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated May 14, 2019 · Synced Sep 6, 2026, 4:30 AM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

The Study of Folate Receptor-Mediated Staining Solution (FRD™) In Cervical Lesion Detection

NCT03366493
View directory record Official record
Conditions
Cervical Intraepithelial Neoplasia Grade 2/3
Interventions
FRD, Cytology, HPV testing, Colposcopy, ECC, Biospy
Combination Product · Other · Procedure
Lead sponsor
GY Highland Biotech LLC
Industry
Eligibility
20 Years to 60 Years · Female only
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 7, 2017 · Synced Sep 6, 2026, 4:30 AM EDT
Completed Not applicable Interventional

Diabetes Visual Function Supplement Study

NCT01646047
View directory record Official record
Conditions
Diabetes Mellitus - Type 1, Diabetes Mellitus - Type 2, Non-proliferative Diabetic Retinopathy
Interventions
multi-component nutritional supplement capsules, multi-component dietary supplement
Dietary Supplement
Lead sponsor
ZeaVision, LLC
Industry
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Jan 21, 2015 · Synced Sep 6, 2026, 4:30 AM EDT