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ClinicalTrials.gov public records Last synced Sep 3, 2026, 9:34 AM EDT

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Showing 1–24 of 38 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Placebo light exposure Clear all
Recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Beet-root Juice and PBM Treatments on Muscle Fatigue

NCT05596474
View directory record Official record
Conditions
Health Care Utilization, Healthy Aging
Interventions
Beet-root juice, red-light therapy, Placebo, sham light
Dietary Supplement · Radiation
Lead sponsor
Wake Forest University
Other
Eligibility
65 Years and older
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 19, 2024 · Synced Sep 3, 2026, 9:34 AM EDT
Recruiting Not applicable Interventional

Systematic Light Exposure in Pediatric Brain Tumor Survivors

NCT05340881
View directory record Official record
Conditions
Brain Tumor
Interventions
Bright Light Exposure, Dim Light Exposure, Cognitive Assessment
Behavioral · Other
Lead sponsor
Baylor College of Medicine
Other
Eligibility
10 Years to 18 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 17, 2025 · Synced Sep 3, 2026, 9:34 AM EDT
Completed Not applicable Interventional

Gamma Sensory Flicker for Parkinson's Disease Patients With Freezing of Gait

NCT06295458
View directory record Official record
Conditions
Gait Disorders, Neurologic, Parkinson Disease
Interventions
David Delight Plus Device, Sham Therapy
Device · Other
Lead sponsor
Emory University
Other
Eligibility
50 Years to 80 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 3, 2026 · Synced Sep 3, 2026, 9:34 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Topical Irrigation Therapy for CRS

NCT02630472
View directory record Official record
Conditions
Rhinitis, Sinusitis
Interventions
Quinine Sulfate, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 12, 2019 · Synced Sep 3, 2026, 9:34 AM EDT
Active, not recruiting Not applicable Interventional

Far Red Light to Improve Functioning in PAD

NCT06165016
View directory record Official record
Conditions
Peripheral Artery Disease, Peripheral Vascular Disease, Aging, Walking, Difficulty
Interventions
Far red light therapy, Sham light therapy
Device
Lead sponsor
Northwestern University
Other
Eligibility
50 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
2
States / cities
Birmingham, Alabama • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Sep 3, 2026, 9:34 AM EDT
Withdrawn Phase 2Phase 3 Interventional Accepts healthy volunteers

Corneal Crosslinking in Keratoconus and Corneal Ectasia

NCT00679666
View directory record Official record
Conditions
Progressive Keratoconus, Corneal Ectasia
Interventions
Riboflavin, Placebo
Drug
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
2
States / cities
Columbus, Ohio • Dublin, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 19, 2017 · Synced Sep 3, 2026, 9:34 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Effectiveness of Combining Light and Non-Light Treatments for Jet Lag and Sleep Disorders

NCT00387179
View directory record Official record
Conditions
Sleep Disorders, Circadian Rhythm
Interventions
Melatonin, Methylxanthine, Light Therapy
Drug · Procedure
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 40 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Boulder, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 24, 2009 · Synced Sep 3, 2026, 9:34 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Lutein Supplementation in Healthy Children

NCT05314647
View directory record Official record
Conditions
Eye Fatigue, Diet, Healthy, Cognitive Change
Interventions
lutein, placebo
Dietary Supplement
Lead sponsor
Northcentral University
Other
Eligibility
8 Years to 16 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Des Moines, Iowa
Source: ClinicalTrials.gov public record
Updated Nov 29, 2023 · Synced Sep 3, 2026, 9:34 AM EDT
Completed Not applicable Interventional

Treatment of Painful Diabetic Neuropathy With Photon Stimulation

NCT00539175
View directory record Official record
Conditions
Diabetic Neuropathy, Painful, Diabetic Neuralgia, Diabetic Polyneuropathy, Diabetic Mononeuropathy
Interventions
infrared light, infrared light; placebo
Device
Lead sponsor
East Bay Institute for Research and Education
Other
Eligibility
18 Years to 85 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Martinez, California
Source: ClinicalTrials.gov public record
Updated Oct 3, 2007 · Synced Sep 3, 2026, 9:34 AM EDT
Completed Phase 2 Interventional

Hyperbaric Oxygen Effects on Persistent Post-concussive Symptoms

NCT05173818
View directory record Official record
Conditions
Persistent Post-concussive Syndrome, Concussion Post Syndrome
Interventions
Hyperbaric oxygen at 1.5 ATA, Sham treatment
Drug
Lead sponsor
Essentia Health
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Dec 23, 2025 · Synced Sep 3, 2026, 9:34 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Green Tea and Ultraviolet Light-induced Skin Damage

NCT00134381
View directory record Official record
Conditions
Healthy
Interventions
Green Tea, Placebo
Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 65 Years
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2012
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Sep 5, 2017 · Synced Sep 3, 2026, 9:34 AM EDT
Enrolling by invitation Phase 2 Interventional

Bright Light Therapy for Depressed Geriatric Inpatients

NCT07002554
View directory record Official record
Conditions
Unipolar Depression
Interventions
Bright light therapy, dim red light
Device
Lead sponsor
Medical University of South Carolina
Other
Eligibility
60 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Sep 3, 2026, 9:34 AM EDT
Recruiting Not applicable Interventional

Bright Light Exposure in Surgical Patients

NCT03822949
View directory record Official record
Conditions
Myocardial Ischemia, Critical Illness, Endothelial Dysfunction
Interventions
Day Light, Placebo light, ICU Intense Light, ICU Placebo light
Device
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 90 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated May 13, 2025 · Synced Sep 3, 2026, 9:34 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Project Q Pilot: Smoking Cessation for Light Smokers

NCT03416621
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
Cognitive behavioral cessation counseling, Counseling and placebo drug intervention, Counseling and active drug intervention
Behavioral · Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 28, 2021 · Synced Sep 3, 2026, 9:34 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Bright Light: A Novel Treatment for Anxiety

NCT01064700
View directory record Official record
Conditions
Anxiety, Depression, Sleep
Interventions
Litebook Bright Light Box, Litebook inactivated negation ion generator (the placebo)
Device
Lead sponsor
University of South Carolina
Other
Eligibility
18 Years to 35 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Columbia, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 27, 2021 · Synced Sep 3, 2026, 9:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Blueberry Enhances Activity and Cognition Through Increased Vascular Efficiency

NCT04049162
View directory record Official record
Conditions
Sedentary Lifestyle, Blood Pressure, Arterial Stiffness, Overweight and Obesity
Interventions
Blueberry Plus Exercise (BB-EX), Blueberry Placebo Plus Exercise (P-EX)
Dietary Supplement
Lead sponsor
Duke University
Other
Eligibility
60 Years and older
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 19, 2023 · Synced Sep 3, 2026, 9:34 AM EDT
Completed Not applicable Interventional

A Randomized Crossover Trial of Bright Light Therapy in Irritable Bowel Syndrome

NCT06676488
View directory record Official record
Conditions
Irritable Bowel Syndrome (IBS), Circadian Misalignment
Interventions
Re-Timer glasses, Placebo Device
Device
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Sep 3, 2026, 9:34 AM EDT
Not listed Phase 1 Interventional

Phototherapy in Persons With Multiple Sclerosis

NCT02365259
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Phototherapy
Device
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
18 Years to 64 Years · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 17, 2015 · Synced Sep 3, 2026, 9:34 AM EDT
Completed Not applicable Interventional Results available

Photobiomodulation Therapy Using the Realief Therapy System for the Treatment of Chemotherapy-associated Peripheral Neuropathy

NCT02000908
View directory record Official record
Conditions
Chemotherapy-induced Peripheral Neuropathy
Interventions
photobiomodulation, Sham treatment, Physiotherapy
Device · Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older · Female only
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 10, 2019 · Synced Sep 3, 2026, 9:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Bright Light Treatment On Elders In a Long Term Care Environment

NCT01042587
View directory record Official record
Conditions
Behavioral Responses to Bright Light Therapy in Elders
Interventions
exposure to bright light, low luminosity red light
Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
65 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Elizabethtown, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 10, 2010 · Synced Sep 3, 2026, 9:34 AM EDT
Terminated Phase 3 Interventional Results available

Near Infrared Light for the Treatment of Painful Peripheral Neuropathy

NCT00125268
View directory record Official record
Conditions
Peripheral Neuropathy
Interventions
MIRE, Sham Device
Device
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 85 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 4, 2012 · Synced Sep 3, 2026, 9:34 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Noradrenergic Dysregulation, Sleep and Cognition in Older Adults With Insomnia

NCT06694441
View directory record Official record
Conditions
Insomnia
Interventions
Light Exposure, Placebo
Other
Lead sponsor
Northwestern University
Other
Eligibility
55 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2029
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 29, 2026 · Synced Sep 3, 2026, 9:34 AM EDT
Completed Phase 3 Interventional

Steroids and Cross-linking for Ulcer Treatment

NCT04097730
View directory record Official record
Conditions
Keratitis Bacterial
Interventions
Moxifloxacin Ophthalmic, Difluprednate Ophthalmic, Riboflavin Ophthalmic, Topical Placebo
Drug · Other
Lead sponsor
Thomas M. Lietman
Other
Eligibility
18 Years and older
Enrollment
280 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
2
States / cities
San Francisco, California • Miami, Florida
Source: ClinicalTrials.gov public record
Updated Feb 2, 2025 · Synced Sep 3, 2026, 9:34 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Artemis Sleep Countermeasures

NCT06531733
View directory record Official record
Conditions
Fatigue
Interventions
Sleep Promoting (pink noise), Wake Promoting (blue enriched light plus a nap)
Device
Lead sponsor
National Aeronautics and Space Administration (NASA)
Federal
Eligibility
18 Years to 60 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Mountain View, California
Source: ClinicalTrials.gov public record
Updated Jul 31, 2024 · Synced Sep 3, 2026, 9:34 AM EDT