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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 therapy Clear all
Withdrawn Not applicable Interventional

Prophylactic Treatment of Sleep/Fatigue Before and During Chemotherapy

NCT01542983
View directory record Official record
Conditions
Stage, Breast Cancer
Interventions
Brief behavioral treatment for insomnia and bright light, treatment as usual
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 85 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jan 23, 2019 · Synced Sep 24, 2026, 2:20 PM EDT
Completed No phase listed Observational

Bright Light Therapy as Augmentation of Depressive Symptoms on Acute Psychiatric Floor

NCT04385394
View directory record Official record
Conditions
Depression
Interventions
Not listed
Lead sponsor
State University of New York - Upstate Medical University
Other
Eligibility
18 Years to 90 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Oct 27, 2021 · Synced Sep 24, 2026, 2:20 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 24, 2026, 2:20 PM EDT
Completed Not applicable Interventional Results available

Bright Start Study

NCT05356130
View directory record Official record
Conditions
Depression
Interventions
Written Educational Material on BLT, Enhanced BLT Encouragement and Adherence Promotion
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years to 69 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jun 5, 2025 · Synced Sep 24, 2026, 2:20 PM EDT
Completed Not applicable Interventional Results available

Non-Pharmacological Interventions on Sleep in Post-Acute Rehabilitation

NCT00333619
View directory record Official record
Conditions
Sleep Disorders
Interventions
Nonpharmacological sleep intervention, Active control
Behavioral
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
60 Years and older
Enrollment
219 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Sepulveda, California
Source: ClinicalTrials.gov public record
Updated Apr 23, 2015 · Synced Sep 24, 2026, 2:20 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 24, 2026, 2:20 PM 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 24, 2026, 2:20 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 24, 2026, 2:20 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 24, 2026, 2:20 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 24, 2026, 2:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Comparison of Tissue Oxygenation Measurement Using Multimodal Devices

NCT05784103
View directory record Official record
Conditions
Oxygen Saturation
Interventions
Clarifi Modulum, Perimed PeriFlux 5000, Apple Watch Oxygen Sensor, Innovo iP 900AP
Device
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
2
States / cities
Indianapolis, Indiana • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 28, 2023 · Synced Sep 24, 2026, 2:20 PM EDT
Completed Not applicable Interventional Results available

Wake Therapy in the Treatment of Depression

NCT01431573
View directory record Official record
Conditions
Major Depressive Disorder, Bipolar Disorder
Interventions
Wake Therapy, light box, Lithium
Behavioral · Device · Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 75 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 17, 2021 · Synced Sep 24, 2026, 2:20 PM EDT
Completed Not applicable Interventional

Pilot Comparison of N-of-1 Trials of Light Therapy

NCT03167372
View directory record Official record
Conditions
Cancer, Health Behavior, Depression
Interventions
Litebook® Advantage, Fitbit Flex2 TM
Other
Lead sponsor
Columbia University
Other
Eligibility
21 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 24, 2019 · Synced Sep 24, 2026, 2:20 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 24, 2026, 2:20 PM EDT
Completed Not applicable Interventional Results available

A Non-Pharmacological Method for Enhancing Sleep in PTSD

NCT02370173
View directory record Official record
Conditions
PTSD, Sleep Problems
Interventions
PTSD wavelength-1 bright light, PTSD wavelength-2 bright light
Device
Lead sponsor
University of Arizona
Other
Eligibility
18 Years to 50 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Jun 22, 2023 · Synced Sep 24, 2026, 2:20 PM EDT
Recruiting Not applicable Interventional

Mechanisms of Depression and Anhedonia in Adolescents: Linking Sleep to Reward- and Stress-Related Brain Function

NCT05691439
View directory record Official record
Conditions
Depression in Adolescence
Interventions
Sleep extension and advance, Regular sleep duration and timing
Behavioral
Lead sponsor
University of Oregon
Other
Eligibility
14 Years to 18 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 16, 2025 · Synced Sep 24, 2026, 2:20 PM EDT
Terminated Not applicable Interventional Results available

Napping, Sleep, Cognitive Decline and Risk of Alzheimer's Disease

NCT03256539
View directory record Official record
Conditions
Sleep, Alzheimer Disease, Cognitive Impairment, Aging, CBT
Interventions
Sleep intervention, Placebo intervention
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
65 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Sep 24, 2026, 2:20 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 24, 2026, 2:20 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 24, 2026, 2:20 PM EDT
Completed Not applicable Interventional Results available

Sleep to Activate Mood Promotion

NCT02413294
View directory record Official record
Conditions
Depression, Sleep Quality
Interventions
Re-Timer glasses
Device
Lead sponsor
University of Michigan
Other
Eligibility
65 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 6, 2017 · Synced Sep 24, 2026, 2:20 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 24, 2026, 2:20 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Morning Bright Light to Improve Sleep Quality in Veterans

NCT03578003
View directory record Official record
Conditions
Brain Injuries, Traumatic, Post-traumatic Stress Disorder
Interventions
Morning Bright Light Therapy
Other
Lead sponsor
Portland VA Medical Center
Federal
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
1
States / cities
Portand, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Sep 24, 2026, 2:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Light Treatment for Sleep/Wake Disturbances in Alzheimer's Disease

NCT00946530
View directory record Official record
Conditions
Sleep Initiation and Maintenance Disorders
Interventions
Bright light, Control
Device
Lead sponsor
Stanford University
Other
Eligibility
55 Years to 100 Years
Enrollment
118 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2010
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Oct 2, 2018 · Synced Sep 24, 2026, 2:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Experimental Manipulation of Sleep and Circadian Rhythms and the Role Played on Reward Function in Teens

NCT04792697
View directory record Official record
Conditions
Delayed Sleep Phase Syndrome
Interventions
Increase morning bright light, Decrease evening blue light, Sleep Scheduling, Monitor sleep, mood, and substance use
Other · Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
13 Years to 15 Years
Enrollment
115 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Sep 24, 2026, 2:20 PM EDT