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ClinicalTrials.gov public records Last synced Oct 21, 2026, 4:58 AM EDT

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Showing 25–48 of 77 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Dim Light Clear all
Completed Not applicable Interventional Results available

The "Light for the Brain" Study

NCT02677987
View directory record Official record
Conditions
Hematopoietic Stem Cell Transplantation, Cognitive Impairments, Sleep, Depression, Fatigue, Quality of Life
Interventions
Intervention systematic light exposure, Comparison systematic light exposure
Device
Lead sponsor
Northwestern University
Other
Eligibility
21 Years and older
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 18, 2022 · Synced Oct 21, 2026, 4:58 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 30, 2026 · Synced Oct 21, 2026, 4:58 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Bright Light on Co-occurring Cancer-related Symptoms in Breast Cancer Survivors

NCT03304587
View directory record Official record
Conditions
Breast Cancer
Interventions
Polysomnography (PSG), Rectal thermistor 400 Series, Bright blue-green light, Dim red light, Digital foot candle datalogging light meter, Patient-Reported Outcomes Measurement Information System (PROMIS)-Cancer-Fatigue, Patient-Reported Outcomes Measurement Information System (PROMIS)-Sleep Disturbance, Patient-Reported Outcomes Measurement Information System (PROMIS)-Depression, Patient-Reported Outcomes Measurement Information System (PROMIS)-Physical Function, Pittsburgh Sleep Quality Index (PSQI), Center for Epidemiological Studies - Depression, Montreal Cognitive Assessment (MoCA), European Organization for Research and Treatment of Cancer-Quality of Life Questionnaire (EORTC QLQ-C30), Daily Log
Diagnostic Test · Other
Lead sponsor
Michigan State University
Other
Eligibility
21 Years and older · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
1
States / cities
East Lansing, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 10, 2025 · Synced Oct 21, 2026, 4:58 AM EDT
Completed Not applicable Interventional

Audio-visual Stimulation: Sleep Dose Response

NCT03569865
View directory record Official record
Conditions
Insomnia Chronic, Osteoarthritis, Pain, Chronic
Interventions
Audiovisual Stimulation
Device
Lead sponsor
University of Washington
Other
Eligibility
60 Years and older
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 20, 2022 · Synced Oct 21, 2026, 4:58 AM EDT
Completed Not applicable Interventional Results available

Morning Light Treatment at Home to Reduce PTSD Symptoms

NCT03513848
View directory record Official record
Conditions
PTSD
Interventions
Retimer, Retimer placebo
Device
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years to 70 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 23, 2019 · Synced Oct 21, 2026, 4:58 AM EDT
Completed Not applicable Interventional

Laser Acupuncture Before and After Embryo Transfer Improves IVF Outcomes

NCT02815371
View directory record Official record
Conditions
Embryo Implantation
Interventions
Needle Acupuncture, Laser Acupuncture, Sham Laser Acupuncture
Procedure
Lead sponsor
Reproductive Medicine Associates of New Jersey
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
803 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
2
States / cities
Norwalk, Connecticut • Morristown, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 28, 2016 · Synced Oct 21, 2026, 4:58 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Nighttime Synchrony of Your Nutrition and Circadian Health

NCT07329283
View directory record Official record
Conditions
Sleep, Metabolism Changes, Circadian Rhythm, Lifestyle Factors, Sleep Hygiene, Sleep Hygiene, Inadequate, Sleep Deprivation, Insufficient Sleep, Circadian Misalignment, Circadian Dysregulation, Light Exposure
Interventions
Central Clock Misalignment, Peripheral Misalignment
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 35 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2031
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Oct 21, 2026, 4:58 AM EDT
Not yet recruiting Not applicable Interventional

SmartEnLite for Nursing Home Residents With Dementia

NCT07883291
View directory record Official record
Conditions
Alzheimer's Disease and Related Dementias, Alzheimer Disease and Related Dementias
Interventions
Smart Environmental Light (SmartEnLite)
Device
Lead sponsor
Penn State University
Other
Eligibility
55 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 20, 2026 · Synced Oct 21, 2026, 4:58 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Toileting at Night in Older Adults: Light to Maximize Balance, Minimize Insomnia

NCT01350505
View directory record Official record
Conditions
Falls, Balance, Insomnia, Aging
Interventions
White light exposure, Dim white light exposure, Very dim white light exposure, Dim orange light exposure
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
55 Years to 85 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Feb 15, 2019 · Synced Oct 21, 2026, 4:58 AM EDT
Completed Not applicable Interventional Results available

Relaxing Environment to Lower Anxiety During Onabotulinum Toxin Chemodenervation of the Bladder

NCT06319898
View directory record Official record
Conditions
Anxiety, Pain, Burnout, Professional
Interventions
Lavender aromatherapy sticker
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older · Female only
Enrollment
113 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 22, 2025 · Synced Oct 21, 2026, 4:58 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 25, 2009 · Synced Oct 21, 2026, 4:58 AM EDT
Completed Not applicable Interventional Results available

Effect of Increased Light Exposure on Fatigue in Breast Cancer

NCT00478257
View directory record Official record
Conditions
Breast Cancer
Interventions
bright white light, comparator red light treatment
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older · Female only
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Feb 6, 2019 · Synced Oct 21, 2026, 4:58 AM EDT
Completed Not applicable Interventional Results available

Treatment of Post-Traumatic Brain Injury (Post-TBI) Fatigue With Light Therapy

NCT01725750
View directory record Official record
Conditions
Traumatic Brain Injury, Fatigue
Interventions
Bright White Light (BWL), Dim Red Light (DRL)
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 7, 2019 · Synced Oct 21, 2026, 4:58 AM EDT
Completed Not applicable Interventional Results available

Light Therapy Treatment in Parkinson's Disease Patients With Daytime Somnolence

NCT01338649
View directory record Official record
Conditions
Parkinson's Disease, Sleep Disorder; Excessive Somnolence
Interventions
Bright Light Treatment (Sun Ray Sunbox SB-558), Dim red light (Sun Ray Sunbox SB-558)
Device
Lead sponsor
Northwestern University
Other
Eligibility
Not listed
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 1, 2023 · Synced Oct 21, 2026, 4:58 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Impact of Sleep Extension in Adolescents

NCT03500458
View directory record Official record
Conditions
Insulin Sensitivity, Sleep, Dietary Habits
Interventions
Sleep Extension
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
14 Years to 19 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2025
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 1, 2024 · Synced Oct 21, 2026, 4:58 AM EDT
Withdrawn Not applicable Interventional

Light Therapy to Treat Depression in Pediatric Stem Cell Therapy Recipients

NCT06496477
View directory record Official record
Conditions
Hematopoietic Stem Cell Transplant
Interventions
Ayo wearable
Device
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
8 Years to 18 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Oct 21, 2026, 4:58 AM EDT
Completed Not applicable Interventional Results available

Light Treatment to Improve Symptom Management of Fibromyalgia Syndrome

NCT03794908
View directory record Official record
Conditions
Fibromyalgia, FMS
Interventions
Light therapy A (Bright) via the Re-Timer®, Light therapy B (Dim) via the Re-Timer®
Device
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 5, 2022 · Synced Oct 21, 2026, 4:58 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Light Therapy for Depression in Adolescent Outpatients

NCT05823090
View directory record Official record
Conditions
Depression, Adolescent - Emotional Problem
Interventions
light box (Carex DayLight Classic Model)
Device
Lead sponsor
Ann & Robert H Lurie Children's Hospital of Chicago
Other
Eligibility
12 Years to 18 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 6, 2026 · Synced Oct 21, 2026, 4:58 AM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy of Nyxol (0.75% Phentolamine Ophthalmic Solution) in Subjects With Dim Light Vision Disturbances

NCT04638660
View directory record Official record
Conditions
Dim Light Vision Disturbances
Interventions
Phentolamine Ophthalmic Solution 0.75%, Phentolamine Ophthalmic Solution Vehicle (Placebo)
Drug
Lead sponsor
Opus Genetics, Inc
Industry
Eligibility
18 Years and older
Enrollment
144 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
17
States / cities
Newport Beach, California • Petaluma, California • Jacksonville, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2025 · Synced Oct 21, 2026, 4:58 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Facilitating Adjustment to Simulated Jet Lag

NCT05382923
View directory record Official record
Conditions
Circadian Rhythm Sleep Disorder, Jet Lag Type
Interventions
Bright Light, Bright Light + Exercise + Melatonin, Control
Behavioral
Lead sponsor
University of Arizona
Other
Eligibility
18 Years to 45 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated May 19, 2022 · Synced Oct 21, 2026, 4:58 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Pathophysiology of Circadian Rhythm Delayed Sleep Wake Phase Disorder

NCT06471374
View directory record Official record
Conditions
Delayed Sleep Phase Syndrome, Delayed Sleep Phase
Interventions
Circadian rhythm assessment, Light sensitivity assessment
Behavioral
Lead sponsor
University of Colorado, Boulder
Other
Eligibility
16 Years to 40 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
2
States / cities
Boulder, Colorado • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 17, 2026 · Synced Oct 21, 2026, 4:58 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 16, 2026 · Synced Oct 21, 2026, 4:58 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Pharmacokinetics of Benzo[a]Pyrene: Impact of Diet

NCT03802721
View directory record Official record
Conditions
Environmental Exposure
Interventions
[14C]-benzo[a]pyrene, Brussels sprouts before 50 ng dose, DIM supplement before 50 ng dose
Drug
Lead sponsor
Oregon State University
Other
Eligibility
21 Years to 65 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2024
U.S. locations
1
States / cities
Corvallis, Oregon
Source: ClinicalTrials.gov public record
Updated Jun 22, 2025 · Synced Oct 21, 2026, 4:58 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Impact of Artificial Sunlight on Human Sleep and Circadian Rhythms

NCT03636360
View directory record Official record
Conditions
Sleep, Circadian Dysregulation, Mood
Interventions
Light
Device
Lead sponsor
VA Palo Alto Health Care System
Federal
Eligibility
18 Years to 35 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Mar 30, 2021 · Synced Oct 21, 2026, 4:58 AM EDT