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Showing 1–24 of 49 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Lighting Intervention Blue light Clear all
Not yet recruiting Not applicable Interventional

Circadian Light Exposure Adjustment for Restfulness

NCT07391852
View directory record Official record
Conditions
Sleep Onset Latency
Interventions
Amber Tinted Glasses, Clear Glasses, Smart Lightbulbs
Device
Lead sponsor
University of Arizona
Other
Eligibility
60 Months to 83 Months
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Sep 7, 2026, 2:23 PM EDT
Recruiting Not applicable Interventional

Sleep and Circadian Interventions for College Students at High Risk of Suicide

NCT07346014
View directory record Official record
Conditions
Sleep Disturbance, Sleep, Depression, Suicide
Interventions
Sleep Feedback + Psychoeducation, Transdiagnostic Sleep and Circadian Intervention + Bright Light (TSC+), Triple Chronotherapy (TCT+)
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 25 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Sep 7, 2026, 2:23 PM EDT
Recruiting Not applicable Interventional

Phase 2 - Rhythmic Light Therapy for Alzheimer's Disease Patients

NCT05016219
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
Circadian-Effective Light, Rhythmic Light, Placebo Light, Placebo Rhythmic Light
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
55 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
2
States / cities
Menands, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Sep 7, 2026, 2:23 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Temperature Rise Caused by Short or Long-wavelengths

NCT06418958
View directory record Official record
Conditions
Post-operative Pain
Interventions
Red Light, Blue Light
Device
Lead sponsor
University of Florida
Other
Eligibility
21 Years to 35 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Nov 18, 2025 · Synced Sep 7, 2026, 2:23 PM EDT
Completed Phase 1 Interventional

Safety and Feasibility Study of Methylene Blue Photodynamic Therapy to Sterilize Deep Tissue Abscess Cavities

NCT02240498
View directory record Official record
Conditions
Abscess
Interventions
Methylene Blue, 20% I.V. Fat Emulsion, Insertion of optical fiber, Laser illumination, 5 minutes, Laser illumination, 10 minutes, Laser illumination, 15 minutes, Laser illumination, 20 minutes, Laser illumination, 25 minutes, Laser illumination, 30 minutes, Optical spectroscopy measurement
Drug · Device
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2023
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Sep 7, 2026, 2:23 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Medications for Opioid Use Disorder Photosensitive Retinal Ganglion Cell Function, Sleep, and Circadian Rhythms: Implications for Treatment

NCT06104280
View directory record Official record
Conditions
Opioid Use Disorder, Sleep Disturbance
Interventions
Post-Illumination Pupillary Response (PIPR), Polysomnography, Multiple Sleep Latency Test, Ecological Momentary Assessments, Actigraphy, DLMO, Melatonin Suppression Test
Other · Behavioral · Device
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 80 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Sep 7, 2026, 2:23 PM EDT
Completed Not applicable Interventional Results available

Lighting Intervention for Cancer-related Fatigue

NCT04827446
View directory record Official record
Conditions
Breast Cancer, Prostate Cancer, Hematologic Malignancy, Survivorship, Fatigue
Interventions
Wearable Sensor, Blue-blocking glasses, Clear glasses, Full SYNC app, "Dummy" SYNC app
Other
Lead sponsor
University of Michigan Rogel Cancer Center
Other
Eligibility
18 Years and older
Enrollment
139 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 8, 2025 · Synced Sep 7, 2026, 2:23 PM EDT
Not yet recruiting Phase 2 Interventional Accepts healthy volunteers

PDT vs Peels for Treatment of Actinic Keratoses

NCT04429308
View directory record Official record
Conditions
Actinic Keratoses
Interventions
Photodynamic Therapy, Chemical Peels
Procedure · Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Sep 7, 2026, 2:23 PM EDT
Recruiting Not applicable Interventional

Effects of Blocking Blue Light at Night Post CABG, AVR, MVR, CABG AVR, CABG MVR, or SAH

NCT04578249
View directory record Official record
Conditions
Circadian Rhythm Disorders
Interventions
Blue light-blocking goggles, Clear goggles
Other
Lead sponsor
West Virginia University
Other
Eligibility
45 Years to 75 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Apr 19, 2026 · Synced Sep 7, 2026, 2:23 PM EDT
Completed Phase 1 Interventional

Bright Light on Fatigue in Women Being Treated for Breast Cancer

NCT02658708
View directory record Official record
Conditions
Breast Neoplasms, Breast Cancer, Cancer of Breast, Cancer of the Breast
Interventions
Bright blue-green light using light visor cap, Dim red light using light visor cap, European Organization for Research and Treatment of Cancer-Quality of Life Questionnaire, Epworth Sleepiness Scale, Pittsburgh Sleep Quality Index, Patient-Reported Outcomes Measurement Information System (PROMIS)-Sleep Disturbance, Patient-Reported Outcomes Measurement Information System (PROMIS)-Cancer-Fatigue, Digital foot candle datalogging light meter (Extech Instrument, Model SDL400), Polysomnography (Easy Ambulatory 2 Cadwell, Kennewick, WA), Horne-Ostberg Morningness-Eveningness Questionnaire, Daily Fatigue and Sleep Log
Other · Diagnostic Test
Lead sponsor
Washington University School of Medicine
Other
Eligibility
21 Years and older · Female only
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 24, 2017 · Synced Sep 7, 2026, 2:23 PM EDT
Recruiting Not applicable Interventional

Vitamin D Effects on Immune Microenvironment of Nonmelanoma Skin Cancer After Photodynamic Therapy (PDT)

NCT07241585
View directory record Official record
Conditions
Nonmelanoma Skin Cancer, Basal Cell Carcinoma, Squamous Cell Carcinoma
Interventions
Vitamin D (VitD), Placebo, Photodynamic therapy (PDT), Mohs surgery or electrodessication & curettage (ED&C) (standard of care)
Dietary Supplement · Other · Procedure
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 7, 2026, 2:23 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Promoting Cognitive Resilience and Reducing Frailty in Older Veterans With Bright Light Therapy

NCT05631236
View directory record Official record
Conditions
Veteran Aged 65 and Older
Interventions
Bright Light Therapy (AYO Glasses)
Device
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
60 Years to 85 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Sep 7, 2026, 2:23 PM EDT
Recruiting No phase listed Observational

Blue Light Cystoscopy With Cysview® Registry

NCT02660645
View directory record Official record
Conditions
Bladder Cancer
Interventions
Hexaminolevulinate hydrochloride (HCL), Karl Storz D-Light C Photodynamic Diagnostic (PDD) system
Drug · Device
Lead sponsor
Photocure
Industry
Eligibility
18 Years and older
Enrollment
4,400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2028
U.S. locations
23
States / cities
Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 18 more
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Sep 7, 2026, 2:23 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 7, 2026, 2:23 PM EDT
Withdrawn Not applicable Interventional

Adjunctive Phototherapy Treatment of Infected Diabetic Ulcers

NCT04285710
View directory record Official record
Conditions
Diabetic Foot, Diabetic Foot Ulcer, Diabetes, Diabetes Mellitus, Infected Wound, Infected Ulcer of Skin
Interventions
Phototherapy, Debridement Surgery and Wound Dressing
Device · Procedure
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 25, 2021 · Synced Sep 7, 2026, 2:23 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Blue Light Therapy for Liver Surgery

NCT02915081
View directory record Official record
Conditions
Acute Kidney Injury, Liver Injury, Inflammation
Interventions
Blue light
Other
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 4, 2019 · Synced Sep 7, 2026, 2:23 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Fatigue in Long-Haul Operations

NCT07761611
View directory record Official record
Conditions
Alertness, Fatigue, Mood, and Performance, Calorie Restriction and Light Intervention
Interventions
Caloric restriction, Light exposure
Behavioral · Device
Lead sponsor
National Aeronautics and Space Administration (NASA)
Federal
Eligibility
18 Years and older
Enrollment
118 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Mountain View, California
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Sep 7, 2026, 2:23 PM EDT
Not listed Phase 1Phase 2 Interventional

VST-1001 (Dilute Fluorescein) for Lymphatic Mapping & Localization of Lymph Nodes in Patients With Breast Cancer

NCT02294565
View directory record Official record
Conditions
Breast Cancer
Interventions
VST-1001, 99mTc-labeled sulfur colloid
Drug
Lead sponsor
Vestan, Inc.
Industry
Eligibility
18 Years and older
Enrollment
147 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
2
States / cities
Houston, Texas • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jul 26, 2015 · Synced Sep 7, 2026, 2:23 PM EDT
Not yet recruiting Phase 2 Interventional

Efficacy of Methylene Blue Photodynamic Therapy for Treatment of Deep Tissue Abscesses

NCT06052956
View directory record Official record
Conditions
Abscess
Interventions
Methylene Blue, Lipid Emulsion, Insertion of optical fiber, Laser Illumination (pre-defined dose), Optical Spectroscopy Measurement, Laser Illumination (patient-specific dose), Standard of care abscess drainage
Drug · Device · Procedure
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
2
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Sep 7, 2026, 2:23 PM EDT
Recruiting Not applicable Interventional

Transdiagnostic Sleep and Circadian Intervention + Bright Light in Adolescents With Elevated Depression (TranS-C+BL)

NCT06963463
View directory record Official record
Conditions
Sleep Disturbance, Sleep, Depression, Suicide
Interventions
TranS-C, Sleep Feedback
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
12 Years to 18 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
2
States / cities
Philadelphia, Pennsylvania • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Sep 7, 2026, 2:23 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 7, 2026, 2:23 PM 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 7, 2026, 2:23 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

The Sleep2BWell Trial

NCT06565104
View directory record Official record
Conditions
Blood Pressure, Sleep Health, Diet, Healthy, Physical Activity, Weight Loss
Interventions
Multidimensional Sleep Health Sessions, Healthy Diet Sessions, Physical Activity Sessions
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
20 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Sep 7, 2026, 2:23 PM EDT
Completed Not applicable Interventional

Circadian Amplification in Diabetic Retinopathy

NCT06183476
View directory record Official record
Conditions
Diabetic Retinopathy
Interventions
Amplify-RHYTHM
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
40 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 10, 2025 · Synced Sep 7, 2026, 2:23 PM EDT