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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Bright Light Exposure Clear all
Completed Not applicable Interventional

Using Early Time Restricted Feeding and Timed Light Therapy to Improve Glycemic Control in Adults With Type 2 Diabetes

NCT04155619
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Time Restricted Feeding, Light; Therapy, Complications
Interventions
No change in meal timing, No change in light exposure, Early Time-Restricted Feeding, Timed Light Therapy
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
30 Years to 80 Years
Enrollment
190 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Sep 23, 2026, 3:56 PM EDT
Recruiting Not applicable Interventional

Mechanisms of Risky Alcohol Use in Young Adults: Linking Sleep to Reward- and Stress-Related Brain Function

NCT05684094
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
Sleep extension and advance, Regular sleep duration and timing
Behavioral
Lead sponsor
University of Oregon
Other
Eligibility
18 Years to 24 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Sep 23, 2026, 3:56 PM EDT
Completed Not applicable Interventional Results available

Feasibility of Bright Light Therapy on Fatigue, Sleep and Circadian Activity Rhythms in Lung Cancer Survivors

NCT02954809
View directory record Official record
Conditions
Fatigue, Sleep Disturbance, Circadian Dysregulation
Interventions
Morning bright light therapy, Dim light
Device
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Apr 30, 2025 · Synced Sep 23, 2026, 3:56 PM EDT
Recruiting Not applicable Interventional

The Role of Circadian Clock Proteins in Innate and Adaptive Immunity

NCT03482245
View directory record Official record
Conditions
Pneumonia, Necrotizing Soft Tissue Infection, Intraabdominal Infections, Infection Joint
Interventions
Blue Light
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 65 Years
Enrollment
144 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 10, 2026 · Synced Sep 23, 2026, 3:56 PM EDT
Completed Not applicable Interventional

Treating Cancer-Related Fatigue Through Systematic Light Exposure

NCT01873794
View directory record Official record
Conditions
Hematopoietic Stem Cell Transplantation, Breast Cancer, Fatigue, Mild Cognitive Impairment, Light, Quality of Life, Sleep
Interventions
Bright white light, Dim red light
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
2
States / cities
Hackensack, New Jersey • New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 10, 2017 · Synced Sep 23, 2026, 3:56 PM EDT
Completed Phase 1 Interventional Results available

Cognitive Behavioral Therapy for the Treatment of Seasonal Affective Disorder (SAD)

NCT00076245
View directory record Official record
Conditions
Seasonal Affective Disorder, Depression
Interventions
Light Therapy, Cognitive behavioral therapy (CBT)
Behavioral
Lead sponsor
Henry M. Jackson Foundation for the Advancement of Military Medicine
Other
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 24, 2014 · Synced Sep 23, 2026, 3:56 PM 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 9, 2025 · Synced Sep 23, 2026, 3:56 PM EDT
Recruiting Not applicable Interventional

Feasibility of Light Therapy in the Pediatric Intensive Care Unit (ICU)

NCT07384585
View directory record Official record
Conditions
Circadian Dysregulation, Light Exposure, Pediatric Critical Illness
Interventions
Light Therapy
Other
Lead sponsor
Laura Beth Kalvas
Other
Eligibility
4 Years to 17 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 21, 2026 · Synced Sep 23, 2026, 3:56 PM 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 23, 2026, 3:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Combined Blue and Red Home-Based Light Therapy on Sleep in Adults With Self-Reported Sleep Difficulties

NCT07465250
View directory record Official record
Conditions
Sleep
Interventions
LED portable light therapy bulb
Other
Lead sponsor
Colorado State University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Sep 23, 2026, 3:56 PM EDT
Not yet recruiting Phase 4 Interventional Accepts healthy volunteers

Light and Sleep Fragmentation

NCT06009289
View directory record Official record
Conditions
Sleep, Mild Cognitive Impairment, Mood Disorders
Interventions
Light therapy
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
65 Years to 99 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Aug 24, 2023 · Synced Sep 23, 2026, 3:56 PM EDT
Completed Not applicable Interventional Results available

Feasibility Pilot of Bright Light in the Intensive Care Unit

NCT03568045
View directory record Official record
Conditions
Circadian Rhythm Sleep Disorder, Unspecified
Interventions
standard light, 10,000 lux bright light, 4 hours, 10,000 lux bright light, 8 hours
Device
Lead sponsor
Yale University
Other
Eligibility
50 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 16, 2024 · Synced Sep 23, 2026, 3:56 PM EDT
Not yet recruiting Phase 1 Interventional

Circadian-Optimized Light Therapy for the Treatment of Patients With Advanced Melanoma Receiving Tumor-Infiltrating Lymphocyte Therapy

NCT07628894
View directory record Official record
Conditions
Advanced Cutaneous Melanoma, Clinical Stage III Cutaneous Melanoma AJCC v8, Clinical Stage IV Cutaneous Melanoma AJCC v8, Metastatic Cutaneous Melanoma
Interventions
Biospecimen Collection, Internet-Based Intervention, Medical Device Usage and Evaluation, Phototherapy, Questionnaire Administration, Therapeutic Tumor Infiltrating Lymphocytes
Procedure · Other · Biological
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Sep 23, 2026, 3:56 PM EDT
Completed Not applicable Interventional

Using Behavioral Programs to Treat Sleep Problems in Individuals With Alzheimer's Disease

NCT00183378
View directory record Official record
Conditions
Alzheimer Disease, Sleep Initiation and Maintenance Disorders
Interventions
Walking Program, Light Exposure Program, Combined Education, Walking and Light Exposure Program, Routine Medical Care with Education
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
55 Years and older
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 12, 2012 · Synced Sep 23, 2026, 3:56 PM 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 23, 2026, 3:56 PM EDT
Terminated Not applicable Interventional

Blue Light as an Anti-inflammatory and Analgesic Strategy in Thoracic Trauma

NCT06626334
View directory record Official record
Conditions
Rib Fractures, Pain, Acute
Interventions
Bright Blue Light, Bright Full-Spectrum (White) Light, Usual Ambient Light
Device
Lead sponsor
Rebecca E Kotcher, MD
Other
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 7, 2026 · Synced Sep 23, 2026, 3:56 PM EDT
Completed Not applicable Interventional

Daytime Bright Light, Circadian Abnormalities, and Delirium in Medical ICU Patients

NCT03684460
View directory record Official record
Conditions
Circadian Rhythm Disorders
Interventions
Daytime Bright Light, Usual Light
Device
Lead sponsor
Yale University
Other
Eligibility
50 Years and older
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 22, 2024 · Synced Sep 23, 2026, 3:56 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

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 Apr 24, 2023 · Synced Sep 23, 2026, 3:56 PM EDT
Recruiting Not applicable Interventional

Sleep TO Prevent Post-surgical Pain

NCT06976138
View directory record Official record
Conditions
Knee Osteoarthristis
Interventions
Cognitive-Behavioral Therapy for Insomnia, Bright Light therapy via the Re-Timer®, Negative Ion exposure via IonMi Device, Sleep / Knee Osteoarthritis Education
Behavioral · Device
Lead sponsor
Johns Hopkins University
Other
Eligibility
60 Years and older
Enrollment
252 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
2
States / cities
Baltimore, Maryland • Chestnut Hill, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Sep 23, 2026, 3:56 PM EDT
Recruiting Not applicable Interventional

Role of Sleep Reactivity in Shift Work Disorder

NCT05424406
View directory record Official record
Conditions
Shift-work Disorder
Interventions
Active phototherapy, Control phototherapy, Cognitive Behavioral Therapy (CBT), Sleep education control
Behavioral
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Novi, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 13, 2025 · Synced Sep 23, 2026, 3:56 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Dose-dependent Impact of Daytime Lighting on Evening Responses to Light

NCT04882280
View directory record Official record
Conditions
Sleep
Interventions
Light
Behavioral
Lead sponsor
Palo Alto Veterans Institute for Research
Other
Eligibility
18 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Mar 16, 2022 · Synced Sep 23, 2026, 3:56 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Glaucoma, Visual Field Loss, and Their Association With Life Space in Older Adults

NCT04396002
View directory record Official record
Conditions
Primary Open Angle Glaucoma
Interventions
Life Space Questionnaire, Low Luminance Questionnaire, Contrast sensitivity under dim illumination, Visual field under dim illumination (MAIA), Macular Pigment Optical Density (MPOD), Dark Adaptation
Diagnostic Test
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 100 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2026
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Sep 23, 2026, 3:56 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

SCREENS: Sleep, Circadian Rhythms, and Electronics in the EveNing Study

NCT06192745
View directory record Official record
Conditions
Sleep, Circadian Rhythm, Executive Function, Emotion Regulation
Interventions
no screen control with dim light and calming activities, unfiltered Bright tablet screen, Filtered dim tablet screen, Exciting content, Calming Content
Behavioral
Lead sponsor
Baylor College of Medicine
Other
Eligibility
8 Years to 11 Years
Enrollment
220 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Sep 23, 2026, 3:56 PM 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 21, 2026 · Synced Sep 23, 2026, 3:56 PM EDT