{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Dim+light",
    "query": {
      "intervention": "Dim light"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 76,
    "total_pages": 8,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Dim+light&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T16:40:21.731Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT02658708",
      "title": "Bright Light on Fatigue in Women Being Treated for Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Breast Neoplasms",
        "Breast Cancer",
        "Cancer of Breast",
        "Cancer of the Breast"
      ],
      "interventions": [
        {
          "name": "Bright blue-green light using light visor cap",
          "type": "OTHER"
        },
        {
          "name": "Dim red light using light visor cap",
          "type": "OTHER"
        },
        {
          "name": "European Organization for Research and Treatment of Cancer-Quality of Life Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Epworth Sleepiness Scale",
          "type": "OTHER"
        },
        {
          "name": "Pittsburgh Sleep Quality Index",
          "type": "OTHER"
        },
        {
          "name": "Patient-Reported Outcomes Measurement Information System (PROMIS)-Sleep Disturbance",
          "type": "OTHER"
        },
        {
          "name": "Patient-Reported Outcomes Measurement Information System (PROMIS)-Cancer-Fatigue",
          "type": "OTHER"
        },
        {
          "name": "Digital foot candle datalogging light meter (Extech Instrument, Model SDL400)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Polysomnography (Easy Ambulatory 2 Cadwell, Kennewick, WA)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Horne-Ostberg Morningness-Eveningness Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Daily Fatigue and Sleep Log",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "21 Years and older · Female only"
      },
      "enrollment_count": 19,
      "start_date": "2015-10-12",
      "completion_date": "2017-05-09",
      "has_results": false,
      "last_update_posted_date": "2017-09-25",
      "last_synced_at": "2026-09-03T16:40:21.731Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02658708"
    },
    {
      "nct_id": "NCT05340881",
      "title": "Systematic Light Exposure in Pediatric Brain Tumor Survivors",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Brain Tumor"
      ],
      "interventions": [
        {
          "name": "Bright Light Exposure",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Dim Light Exposure",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cognitive Assessment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "OTHER"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "10 Years to 18 Years"
      },
      "enrollment_count": 40,
      "start_date": "2022-10-14",
      "completion_date": "2026-07",
      "has_results": false,
      "last_update_posted_date": "2025-09-18",
      "last_synced_at": "2026-09-03T16:40:21.731Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05340881"
    },
    {
      "nct_id": "NCT02691000",
      "title": "The Light Heart Study: Daily Light Box Use for Depressive Symptoms in Patients With Stage B Heart Failure",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Depression",
        "Stage B Heart Failure"
      ],
      "interventions": [
        {
          "name": "LiteBook",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 122,
      "start_date": "2015-09",
      "completion_date": "2018-09",
      "has_results": false,
      "last_update_posted_date": "2016-10-27",
      "last_synced_at": "2026-09-03T16:40:21.731Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02691000"
    },
    {
      "nct_id": "NCT06971640",
      "title": "Advancing Identification of Circadian Delay in ADHD Youth: Associations With Clinical Heterogeneity and Cognition",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "ADHD - Attention Deficit Disorder With Hyperactivity",
        "ADHD"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "9 Years",
        "sex": "ALL",
        "summary": "6 Years to 9 Years"
      },
      "enrollment_count": 250,
      "start_date": "2025-05-28",
      "completion_date": "2029-11",
      "has_results": false,
      "last_update_posted_date": "2026-05-05",
      "last_synced_at": "2026-09-03T16:40:21.731Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06971640"
    },
    {
      "nct_id": "NCT03569865",
      "title": "Audio-visual Stimulation: Sleep Dose Response",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Insomnia Chronic",
        "Osteoarthritis",
        "Pain, Chronic"
      ],
      "interventions": [
        {
          "name": "Audiovisual Stimulation",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 72,
      "start_date": "2019-03-15",
      "completion_date": "2020-10-31",
      "has_results": false,
      "last_update_posted_date": "2022-01-20",
      "last_synced_at": "2026-09-03T16:40:21.731Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03569865"
    },
    {
      "nct_id": "NCT07165340",
      "title": "Evaluation of Lymphatic Response to Physiotherapy in Patients With Swelling Associated With Superficial Venous Disease",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Chronic Venous Disease"
      ],
      "interventions": [
        {
          "name": "Indocyanine Green near infrared fluorescence imaging",
          "type": "COMBINATION_PRODUCT"
        },
        {
          "name": "advanced pneumatic compression",
          "type": "DEVICE"
        },
        {
          "name": "Duplex ultrasound",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "compression wrap",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "COMBINATION_PRODUCT",
        "DEVICE",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 34,
      "start_date": "2025-09",
      "completion_date": "2026-08",
      "has_results": false,
      "last_update_posted_date": "2025-09-16",
      "last_synced_at": "2026-09-03T16:40:21.731Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07165340"
    },
    {
      "nct_id": "NCT03715465",
      "title": "The Clinical Utility of Measuring the Circadian Clock in Treatment of Delayed Sleep-Wake Phase Disorder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Delayed Sleep Phase Syndrome"
      ],
      "interventions": [
        {
          "name": "Melatonin 0.5 MG",
          "type": "DRUG"
        },
        {
          "name": "Dim Light Melatonin Onset (salivary)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 44,
      "start_date": "2019-02-15",
      "completion_date": "2021-11-05",
      "has_results": true,
      "last_update_posted_date": "2022-11-25",
      "last_synced_at": "2026-09-03T16:40:21.731Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03715465"
    },
    {
      "nct_id": "NCT04690504",
      "title": "Validation of Circadian Biomarkers in Patients With Sleep Disorders",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sleep Disorders, Circadian Rhythm",
        "Circadian Rhythm Disorders",
        "Circadian Rhythm Sleep Disorder",
        "Advanced Sleep Phase Syndrome (ASPS)",
        "Delayed Sleep Phase Syndrome",
        "Sleep Wake Disorders",
        "Sleep Disorder"
      ],
      "interventions": [
        {
          "name": "dim light melatonin onset (DLMO)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 50,
      "start_date": "2021-11-02",
      "completion_date": "2024-07-01",
      "has_results": false,
      "last_update_posted_date": "2024-08-06",
      "last_synced_at": "2026-09-03T16:40:21.731Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04690504"
    },
    {
      "nct_id": "NCT06310135",
      "title": "Filtered Eyewear to Prevent Light-induced Melatonin Suppression - Aim 1",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep Quality"
      ],
      "interventions": [
        {
          "name": "Filtered Eyewear",
          "type": "DEVICE"
        },
        {
          "name": "Unfiltered Eyewear",
          "type": "DEVICE"
        },
        {
          "name": "No Filters",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Icahn School of Medicine at Mount Sinai",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 29,
      "start_date": "2024-05-01",
      "completion_date": "2024-10-31",
      "has_results": false,
      "last_update_posted_date": "2025-08-05",
      "last_synced_at": "2026-09-03T16:40:21.731Z",
      "location_count": 1,
      "location_summary": "Menands, New York",
      "locations": [
        {
          "city": "Menands",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06310135"
    },
    {
      "nct_id": "NCT07049783",
      "title": "Examining the Circadian Timing Effects of the Hypotensive Response to Exercise",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Young Adults",
        "Hypertension",
        "Post-Exercise Hypotension",
        "Circadian Rhythm"
      ],
      "interventions": [
        {
          "name": "Exercise",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Freda Patterson",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "39 Years",
        "sex": "ALL",
        "summary": "18 Years to 39 Years"
      },
      "enrollment_count": 30,
      "start_date": "2025-07-22",
      "completion_date": "2026-09",
      "has_results": false,
      "last_update_posted_date": "2025-08-17",
      "last_synced_at": "2026-09-03T16:40:21.731Z",
      "location_count": 1,
      "location_summary": "Newark, Delaware",
      "locations": [
        {
          "city": "Newark",
          "state": "Delaware"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07049783"
    }
  ]
}