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Showing 1–24 of 223 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Phototherapy lights 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, 1:53 AM EDT
Not listed Phase 1 Interventional

Study of the Safety and Effectiveness of Collagen Cross-Linking at an Irradiance of 9 mW/cm2 and 18 mW/cm2

NCT02009709
View directory record Official record
Conditions
Keratoconus, Corneal Ectasia
Interventions
Riboflavin 0.1% ophthalmic solution, CCL-VARIO UV lamp, CCL-VARIO at 18 mW/cm2
Drug · Device
Lead sponsor
Robert Mack, M.D.
Other
Eligibility
18 Years to 80 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
1
States / cities
Hoffman Estates, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 13, 2015 · Synced Sep 7, 2026, 1:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Simulated Dawn Med Students

NCT02088593
View directory record Official record
Conditions
Depression, Anxiety, Fatigue, Sleepiness, Sleep Disruption
Interventions
Simulated Dawn Light Box, Sleep Hygiene instructions
Device · Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated May 23, 2023 · Synced Sep 7, 2026, 1:53 AM EDT
Active, not recruiting Phase 1 Interventional

A Trial of a New Type of Photodynamic Therapy (VTP) in the Treatment of Patients With Cancer of the Esophagus Who Have Trouble Swallowing

NCT03133650
View directory record Official record
Conditions
Esophagogastric Cancer, Moderate to Severe Dysphagia
Interventions
WST 11-mediated VTP therapy
Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2027
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Sep 7, 2026, 1:53 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Caries Detection With Two Different Caries Detecting Devices

NCT06152081
View directory record Official record
Conditions
Caries,Dental
Interventions
LumiCare rinse, QLF Inspektor Pro Imaging
Device
Lead sponsor
Tufts University
Other
Eligibility
21 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 4, 2025 · Synced Sep 7, 2026, 1:53 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Sequential Whole Bladder Photodynamic Therapy (WBPDT) in the Management of Superficial Bladder Cancer

NCT00322699
View directory record Official record
Conditions
Superficial Bladder Cancer
Interventions
Whole bladder laser light treatment as an alternative to radical cystectomy, Photofrin
Procedure · Drug
Lead sponsor
North Florida/South Georgia Veterans Health System
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2011
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Oct 25, 2012 · Synced Sep 7, 2026, 1:53 AM EDT
Completed Phase 2 Interventional

RECOVER-SLEEP: Platform Protocol

NCT06404086
View directory record Official record
Conditions
Long COVID, Long COVID-19, Hypersomnia, Sleep Disturbance
Interventions
Modafinil, Modafinil Placebo, Solriamfetol, Solriamfetol Placebo, Melatonin, Melantonin Placebo, Tailored lighting (TL) Active, Tailored lighting (TL) Placebo
Drug · Device
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
830 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
47
States / cities
Phoenix, Arizona • Tucson, Arizona • Palo Alto, California + 31 more
Source: ClinicalTrials.gov public record
Updated Jan 21, 2026 · Synced Sep 7, 2026, 1:53 AM EDT
Completed Not applicable Interventional

7T MRI for Light Therapy in Patients With Mild Cognitive Impairment and Mild AD

NCT05596994
View directory record Official record
Conditions
Mild Cognitive Impairment, Alzheimer's Disease
Interventions
Lighting Intervention Therapy, Sham LIT
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
50 Years to 85 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 28, 2025 · Synced Sep 7, 2026, 1:53 AM EDT
Recruiting Not applicable Interventional

Green Light for Post-Operative Wellness

NCT07218289
View directory record Official record
Conditions
Surgery
Interventions
Bright Green Light Therapy, Dim White Light Therapy
Device
Lead sponsor
Rebecca E Kotcher, MD
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced Sep 7, 2026, 1:53 AM EDT
Completed Phase 3 Interventional Results available

Metvix PDT Versus Vehicle PDT With Aktilite CL128 Lamp in Patients With Actinic Keratosis on the Face and Scalp

NCT00304239
View directory record Official record
Conditions
Actinic Keratosis
Interventions
Metvix-PDT, Vehicle-PDT
Combination Product
Lead sponsor
Galderma R&D
Industry
Eligibility
18 Years and older
Enrollment
131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
4
States / cities
Naperville, Illinois • Louisville, Kentucky • Portland, Oregon + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 2, 2023 · Synced Sep 7, 2026, 1:53 AM 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, 1:53 AM EDT
Completed Not applicable Interventional

Effects of Simulated Solar Radiation on Human Skin in Preventing Skin Cancer

NCT05027009
View directory record Official record
Conditions
Melanoma
Interventions
Physical Examination, Solar Simulated Light
Procedure · Other
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
18 Years to 100 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jun 8, 2022 · Synced Sep 7, 2026, 1:53 AM EDT
Not listed Phase 3 Interventional

Corneal Collagen Cross-Linking (CXL) Performed With "Epi-ON" Versus "Epi-OFF" in Eyes With Keratoconus and Other Corneal Ectatic Disorders

NCT03858036
View directory record Official record
Conditions
Keratoconus, Ectasia
Interventions
Ricrolin+, VEGA UV-A system
Drug · Device
Lead sponsor
Center for Sight, Sacramento, CA
Other
Eligibility
12 Years and older
Enrollment
550 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Feb 27, 2019 · Synced Sep 7, 2026, 1:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Investigating the Effects of Evening Light Exposure on Melatonin Suppression, Alertness and Nocturnal Sleep

NCT01586039
View directory record Official record
Conditions
Non-visual Photoreception
Interventions
Visible light
Device
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 30 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 13, 2021 · Synced Sep 7, 2026, 1:53 AM EDT
Completed Not applicable Interventional

Light and the Effect on Metabolic Syndrome and Alzheimer's Disease

NCT03777722
View directory record Official record
Conditions
Alzheimer Disease, Diabetes Mellitus, Type 2
Interventions
Tailored Lighting Intervention
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
55 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
3
States / cities
New Brunswick, New Jersey • Albany, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced Sep 7, 2026, 1:53 AM 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 7, 2026, 1:53 AM EDT
Completed Not applicable Interventional Results available

Treatment of Vitamin D Deficiency in Intestinal Rehabilitation Clinic Patients With a Portable Ultraviolet B Lamp

NCT01930539
View directory record Official record
Conditions
Vitamin D Deficiency, Short Bowel Syndrome
Interventions
Ultraviolet B lamp
Device
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Oct 3, 2023 · Synced Sep 7, 2026, 1:53 AM EDT
Not yet recruiting Not applicable Interventional

Evaluation of a Novel Indoor Air Pollution Intervention Among Older Adults

NCT07539987
View directory record Official record
Conditions
Cardiovascular Diseases, Blood Pressure, Glycated Hemoglobin (HbA1c), Cholesterol, Cholesterol, HDL, Cholesterol, LDL, Indoor Air Quality, Particulate Matter, Health Behavior
Interventions
Air Improvement and Real-time Monitoring for Wellness through Interactive Strategies and Education (AIRWISE), Portable Air Cleaner (PAC) Control
Behavioral · Other
Lead sponsor
University of Montana
Other
Eligibility
55 Years to 79 Years
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Missoula, Montana
Source: ClinicalTrials.gov public record
Updated Apr 19, 2026 · Synced Sep 7, 2026, 1:53 AM EDT
Terminated Not applicable Interventional Results available

Bright Light Therapy for Depression Symptoms in Adults With Cystic Fibrosis (CF) and COPD

NCT04921332
View directory record Official record
Conditions
Cystic Fibrosis, Depressive Symptoms, Chronic Obstructive Pulmonary Disease
Interventions
Bright Light Therapy (BLT) Lamp
Device
Lead sponsor
Erica Osborn
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 27, 2023 · Synced Sep 7, 2026, 1:53 AM 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, 1:53 AM EDT
Completed Phase 2 Interventional Results available

Use of Jet-injection in Photodynamic Therapy for Basal Cell Carcinoma

NCT04552990
View directory record Official record
Conditions
BCC, BCC - Basal Cell Carcinoma, Basal Cell Carcinoma, Basal Cell Cancer, Superficial Basal Cell Carcinoma, Nodular Basal Cell Carcinoma
Interventions
Jet injection of ALA, Surgical excision, Illumination, Incubation
Drug · Procedure · Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 17, 2026 · Synced Sep 7, 2026, 1:53 AM 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, 1:53 AM EDT
Completed Not applicable Interventional

Narrow Band Green Light and Migraine

NCT04841083
View directory record Official record
Conditions
Migraine, Headache
Interventions
Allay Lamp
Device
Lead sponsor
Vedanta Research
Other
Eligibility
18 Years and older
Enrollment
182 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 7, 2022 · Synced Sep 7, 2026, 1:53 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Rhythmic Light Therapy for Alzheimer's Disease Patients

NCT05015478
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
Tailored Rhythmic Lighting Intervention, Placebo Rhythmic Lighting Intervention
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
55 Years and older
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
2
States / cities
Menands, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Sep 7, 2026, 1:53 AM EDT