{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=dim+light+at+night",
    "query": {
      "intervention": "dim light at night"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 17,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=dim+light+at+night&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-05T01:54:13.536Z",
  "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": "NCT04638660",
      "title": "Safety and Efficacy of Nyxol (0.75% Phentolamine Ophthalmic Solution) in Subjects With Dim Light Vision Disturbances",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Dim Light Vision Disturbances"
      ],
      "interventions": [
        {
          "name": "Phentolamine Ophthalmic Solution 0.75%",
          "type": "DRUG"
        },
        {
          "name": "Phentolamine Ophthalmic Solution Vehicle (Placebo)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ocuphire Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 144,
      "start_date": "2020-12-30",
      "completion_date": "2022-05-19",
      "has_results": true,
      "last_update_posted_date": "2025-10-14",
      "last_synced_at": "2026-09-05T01:54:13.536Z",
      "location_count": 17,
      "location_summary": "Newport Beach, California • Petaluma, California • Jacksonville, Florida + 12 more",
      "locations": [
        {
          "city": "Newport Beach",
          "state": "California"
        },
        {
          "city": "Petaluma",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Pittsburg",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04638660"
    },
    {
      "nct_id": "NCT01712243",
      "title": "Light to Maximize Vision, Minimize Insomnia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Postural Balance"
      ],
      "interventions": [
        {
          "name": "Light",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "VA Palo Alto Health Care System",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "55 Years to 85 Years"
      },
      "enrollment_count": 29,
      "start_date": "2013-12",
      "completion_date": "2016-09",
      "has_results": false,
      "last_update_posted_date": "2016-11-02",
      "last_synced_at": "2026-09-05T01:54:13.536Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01712243"
    },
    {
      "nct_id": "NCT04578249",
      "title": "Effects of Blocking Blue Light at Night Post CABG, AVR, MVR, CABG AVR, CABG MVR, or SAH",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Circadian Rhythm Disorders"
      ],
      "interventions": [
        {
          "name": "Blue light-blocking goggles",
          "type": "OTHER"
        },
        {
          "name": "Clear goggles",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "West Virginia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "45 Years to 75 Years"
      },
      "enrollment_count": 80,
      "start_date": "2021-09-20",
      "completion_date": "2027-05",
      "has_results": false,
      "last_update_posted_date": "2026-04-20",
      "last_synced_at": "2026-09-05T01:54:13.536Z",
      "location_count": 1,
      "location_summary": "Morgantown, West Virginia",
      "locations": [
        {
          "city": "Morgantown",
          "state": "West Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04578249"
    },
    {
      "nct_id": "NCT05184933",
      "title": "Sleep and Circadian Mechanisms in Hypertension",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hypertension",
        "Cardiovascular Diseases",
        "Cardiovascular Risk Factors",
        "Circadian Rhythms",
        "Sleep"
      ],
      "interventions": [
        {
          "name": "At-home Polysomnography",
          "type": "OTHER"
        },
        {
          "name": "Circadian Protocol",
          "type": "OTHER"
        },
        {
          "name": "Rested Wakefulness Trial",
          "type": "OTHER"
        },
        {
          "name": "Overnight Sleep Trial",
          "type": "OTHER"
        },
        {
          "name": "Regularized Sleep Schedule",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "Oregon Health and Science University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "25 Years to 64 Years"
      },
      "enrollment_count": 32,
      "start_date": "2022-08-04",
      "completion_date": "2029-03-30",
      "has_results": false,
      "last_update_posted_date": "2026-02-11",
      "last_synced_at": "2026-09-05T01:54:13.536Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05184933"
    },
    {
      "nct_id": "NCT04251234",
      "title": "Light at Night Study",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Bipolar Disorder",
        "Light Sensitivity"
      ],
      "interventions": [
        {
          "name": "Light intensity, ~30 lux",
          "type": "OTHER"
        },
        {
          "name": "Baseline light intensity, <1 lux",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 2,
      "start_date": "2020-10-15",
      "completion_date": "2021-08-04",
      "has_results": false,
      "last_update_posted_date": "2021-08-12",
      "last_synced_at": "2026-09-05T01:54:13.536Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04251234"
    },
    {
      "nct_id": "NCT01350505",
      "title": "Toileting at Night in Older Adults: Light to Maximize Balance, Minimize Insomnia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Falls",
        "Balance",
        "Insomnia",
        "Aging"
      ],
      "interventions": [
        {
          "name": "White light exposure",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Dim white light exposure",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Very dim white light exposure",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Dim orange light exposure",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "55 Years to 85 Years"
      },
      "enrollment_count": 21,
      "start_date": "2013-10-15",
      "completion_date": "2017-06-30",
      "has_results": true,
      "last_update_posted_date": "2019-02-15",
      "last_synced_at": "2026-09-05T01:54:13.536Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01350505"
    },
    {
      "nct_id": "NCT01014533",
      "title": "Pharmacotherapy and Mechanisms of Sleep Disturbance in Alcohol Dependence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Alcohol Dependence",
        "Insomnia"
      ],
      "interventions": [
        {
          "name": "Placebo dispensed to subject.",
          "type": "DRUG"
        },
        {
          "name": "Gabapentin dispensed to subject.",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Dr. Kirk Brower",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 59,
      "start_date": "2007-05",
      "completion_date": "2011-09",
      "has_results": true,
      "last_update_posted_date": "2017-12-06",
      "last_synced_at": "2026-09-05T01:54:13.536Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01014533"
    },
    {
      "nct_id": "NCT05825404",
      "title": "Smart Lighting for Nursing Home Residents With Dementia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Alzheimer's Disease and Related Dementias"
      ],
      "interventions": [
        {
          "name": "Smart Ambient Bright Light (SABL)",
          "type": "DEVICE"
        },
        {
          "name": "Control",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Penn State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 51,
      "start_date": "2023-04-24",
      "completion_date": "2023-12-05",
      "has_results": true,
      "last_update_posted_date": "2025-08-08",
      "last_synced_at": "2026-09-05T01:54:13.536Z",
      "location_count": 2,
      "location_summary": "Belleville, Pennsylvania • DuBois, Pennsylvania",
      "locations": [
        {
          "city": "Belleville",
          "state": "Pennsylvania"
        },
        {
          "city": "DuBois",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05825404"
    },
    {
      "nct_id": "NCT01855126",
      "title": "Individually Tailored Lighting System to Improve Sleep in Older Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep Disturbances"
      ],
      "interventions": [
        {
          "name": "Blue light",
          "type": "OTHER"
        },
        {
          "name": "Red light",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Rensselaer Polytechnic Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 46,
      "start_date": "2013-03",
      "completion_date": "2017-04",
      "has_results": true,
      "last_update_posted_date": "2019-01-29",
      "last_synced_at": "2026-09-05T01:54:13.536Z",
      "location_count": 1,
      "location_summary": "Troy, New York",
      "locations": [
        {
          "city": "Troy",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01855126"
    },
    {
      "nct_id": "NCT03313115",
      "title": "Sleep/Wake Protocol Implementation to Improve Sleep Quality in the ICU",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sleep Deprivation",
        "Delirium"
      ],
      "interventions": [
        {
          "name": "Sleep/Wake Protocol",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 685,
      "start_date": "2017-10-11",
      "completion_date": "2018-03-14",
      "has_results": false,
      "last_update_posted_date": "2023-04-25",
      "last_synced_at": "2026-09-05T01:54:13.536Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03313115"
    }
  ]
}