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Showing 1–24 of 146 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Bright Light Therapy Clear all
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 1, 2026, 2:45 PM EDT
Completed Not applicable Interventional

Out-patient Wake Therapy, Light Therapy and Sleep Phase Advance for Depression

NCT02750631
View directory record Official record
Conditions
Unipolar Depression
Interventions
Triple Therapy
Other
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 28, 2017 · Synced Sep 1, 2026, 2:45 PM EDT
Recruiting Not applicable Interventional

Bright Light Therapy for OSA

NCT05917119
View directory record Official record
Conditions
Obstructive Sleep Apnea
Interventions
BLT, s-BLT
Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
40 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 8, 2026 · Synced Sep 1, 2026, 2:45 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Bright Light as a Countermeasure for Circadian Desynchrony

NCT01119365
View directory record Official record
Conditions
Healthy
Interventions
Bright light
Other
Lead sponsor
VA Palo Alto Health Care System
Federal
Eligibility
18 Years to 35 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2023
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Apr 5, 2022 · Synced Sep 1, 2026, 2:45 PM EDT
Completed Not applicable Interventional

Bright Light Therapy for Sleep Disturbance in People With Multiple Sclerosis

NCT04054050
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Light therapy
Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Sep 1, 2026, 2:45 PM 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 1, 2026, 2:45 PM EDT
Not yet recruiting Not applicable Interventional

A Study Of Phototherapy In Patients With Dementia To Improve BPSD

NCT07488195
View directory record Official record
Conditions
Dementia
Interventions
Phototherapy
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 15, 2026 · Synced Sep 1, 2026, 2:45 PM EDT
Recruiting Not applicable Interventional

Type 1 Diabetes REst for Metabolic Health

NCT06627504
View directory record Official record
Conditions
Type 1 Diabetes (T1D), Sleep Health
Interventions
Sleep Health and Circadian Timing Intervention
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
14 Years to 19 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Sep 1, 2026, 2:45 PM EDT
Completed Not applicable Interventional

Clinical Trials of Three Non-Drug Treatments for Winter Depression (SAD)

NCT00006517
View directory record Official record
Conditions
Seasonal Affective Disorder, Mood Disorders, Depression
Interventions
bright light box, dawn simulator, high-output negative ion generator, low-output negative ion generator, dawn light pulse
Device
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 70 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2004
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 2, 2015 · Synced Sep 1, 2026, 2:45 PM EDT
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 1, 2026, 2:45 PM EDT
Completed Not applicable Interventional Results available

A Wearable Morning Light Treatment for Postpartum Depression

NCT04845347
View directory record Official record
Conditions
Post Partum Depression
Interventions
Bright Light Therapy, Dim Light Therapy
Device
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older · Female only
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Sep 1, 2026, 2:45 PM EDT
Completed Phase 1 Interventional

Treatment Strategies for Children With Smith-Magenis Syndrome

NCT00506259
View directory record Official record
Conditions
Developmental Delay Disorders, Chromosome Deletion, Mental Retardation, Sleep Disorders, Circadian Rhythm, Self Injurious Behavior
Interventions
dTR Melatonin (NIH CC PDS), Phototherapy (Bright Light), Melatonin CR
Drug · Device
Lead sponsor
National Human Genome Research Institute (NHGRI)
NIH
Eligibility
3 Years to 45 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2018
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 11, 2019 · Synced Sep 1, 2026, 2:45 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Peri-operative Application of Eyeprotx General Anesthesia Goggles As Prevention Against Corneal Injury Post Intubation.

NCT03762889
View directory record Official record
Conditions
Corneal Injuries
Interventions
Eyeprotx™ General Anesthesia Protective Goggles, Eyelid Tape, Eye Ointment
Device
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jun 5, 2019 · Synced Sep 1, 2026, 2:45 PM EDT
Recruiting Not applicable Interventional

Fibromyalgia Sleep A to ZZZ Study

NCT06567886
View directory record Official record
Conditions
Fibromyalgia
Interventions
Light Therapy, Sleep Stabilization
Device · Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
390 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Sep 1, 2026, 2:45 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 1, 2026, 2:45 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 1, 2026, 2:45 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 1, 2026, 2:45 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 1, 2026, 2:45 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Objectively Diagnose and Monitor Treatment of Light Sensitivity

NCT03694626
View directory record Official record
Conditions
Photophobia, Traumatic Brain Injury, Migraine
Interventions
Pupillography, Ocular Coherence Tomography (OCT), Wrist-watch sensor device, Videography, Electrophysiology
Device
Lead sponsor
Randy Kardon
Other
Eligibility
18 Years to 80 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2028
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Nov 23, 2025 · Synced Sep 1, 2026, 2:45 PM EDT
Recruiting Phase 2 Interventional

Bright White Light Therapy in Reducing Cancer-Related Fatigue and Depression in Advanced Prostate Cancer Patients Undergoing Treatment With ADT Combination Therapy

NCT05869682
View directory record Official record
Conditions
Advanced Prostate Carcinoma, Metastatic Prostate Carcinoma, Prostate Carcinoma, Stage III Prostate Cancer AJCC v8, Stage IV Prostate Cancer AJCC v8
Interventions
Bright White Light Therapy, Combination Drug Therapy, Electronic Health Record Review, Quality-of-Life Assessment, Questionnaire Administration
Procedure · Drug · Other
Lead sponsor
City of Hope Medical Center
Other
Eligibility
60 Years and older · Male only
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Oct 5, 2025 · Synced Sep 1, 2026, 2:45 PM EDT
Completed Not applicable Interventional Results available

Bright Light Treatment At Home To Manage Chronic Pain In U.S. Veterans

NCT02373189
View directory record Official record
Conditions
Chronic Low Back Pain
Interventions
Bright light
Device
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years to 70 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 18, 2023 · Synced Sep 1, 2026, 2:45 PM EDT
Active, not recruiting Not applicable Interventional

Light Therapy in End Stage Kidney Disease

NCT06310161
View directory record Official record
Conditions
End Stage Renal Disease
Interventions
Bright light, Dim Light
Device
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 1, 2026, 2:45 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 Aug 23, 2026 · Synced Sep 1, 2026, 2:45 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Melatonin Levels in Smith Magenis Syndrome (SMS)

NCT00691574
View directory record Official record
Conditions
Chromosome Disorders
Interventions
Melatonin, Enviro-light artificial light box
Dietary Supplement · Device
Lead sponsor
Oregon Health and Science University
Other
Eligibility
3 Years to 85 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1998 – 2009
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 26, 2019 · Synced Sep 1, 2026, 2:45 PM EDT