{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+spectacle+lens",
    "query": {
      "intervention": "Placebo spectacle lens"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 9,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-24T12:53:34.345Z",
  "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": "NCT05087563",
      "title": "Neurolens Convergence Insufficiency Study",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Binocular Vision Disorder",
        "Convergence Insufficiency",
        "Computer Vision Syndrome"
      ],
      "interventions": [
        {
          "name": "Neurolens spectacle lens",
          "type": "DEVICE"
        },
        {
          "name": "Placebo spectacle lens",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Neurolens Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 50,
      "start_date": "2021-11-22",
      "completion_date": "2022-05-31",
      "has_results": false,
      "last_update_posted_date": "2023-10-13",
      "last_synced_at": "2026-09-24T12:53:34.345Z",
      "location_count": 9,
      "location_summary": "Brea, California • Fort Collins, Colorado • Manchester, Connecticut + 6 more",
      "locations": [
        {
          "city": "Brea",
          "state": "California"
        },
        {
          "city": "Fort Collins",
          "state": "Colorado"
        },
        {
          "city": "Manchester",
          "state": "Connecticut"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Rock Rapids",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05087563"
    },
    {
      "nct_id": "NCT02483559",
      "title": "Seeing the World Through Assorted Glasses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep"
      ],
      "interventions": [
        {
          "name": "Amber Lenses",
          "type": "OTHER"
        },
        {
          "name": "Placebo Lenses",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 15,
      "start_date": "2015-06",
      "completion_date": "2016-05",
      "has_results": false,
      "last_update_posted_date": "2017-02-08",
      "last_synced_at": "2026-09-24T12:53:34.345Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02483559"
    },
    {
      "nct_id": "NCT07095894",
      "title": "A RCT of Spectacles With Aspherical Lenslets or 0.05% Atropine for Myopia Control",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "Atropine",
          "type": "DRUG"
        },
        {
          "name": "Spectacles with HAL",
          "type": "DEVICE"
        },
        {
          "name": "Placebo Eyedrops",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "Jaeb Center for Health Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "5 Years to 11 Years"
      },
      "enrollment_count": 348,
      "start_date": "2026-06-01",
      "completion_date": "2029-06-01",
      "has_results": false,
      "last_update_posted_date": "2026-06-26",
      "last_synced_at": "2026-09-24T12:53:34.345Z",
      "location_count": 17,
      "location_summary": "Birmingham, Alabama • Tucson, Arizona • Fullerton, California + 12 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07095894"
    },
    {
      "nct_id": "NCT05801991",
      "title": "Neurolens and Contact Lens Discomfort",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Contact Lens Discomfort"
      ],
      "interventions": [
        {
          "name": "Neurolens",
          "type": "DEVICE"
        },
        {
          "name": "Placebo spectacle lens",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Southern California College of Optometry at Marshall B. Ketchum University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2023-05-01",
      "completion_date": "2024-03-05",
      "has_results": true,
      "last_update_posted_date": "2025-04-22",
      "last_synced_at": "2026-09-24T12:53:34.345Z",
      "location_count": 1,
      "location_summary": "Fullerton, California",
      "locations": [
        {
          "city": "Fullerton",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05801991"
    },
    {
      "nct_id": "NCT00472212",
      "title": "Correction of Farsightedness in Children Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hyperopia",
        "Farsightedness"
      ],
      "interventions": [
        {
          "name": "Spectacles",
          "type": "DEVICE"
        },
        {
          "name": "Control",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "6 Years to 11 Years"
      },
      "enrollment_count": 58,
      "start_date": "2003-11",
      "completion_date": "2008-03",
      "has_results": true,
      "last_update_posted_date": "2023-04-18",
      "last_synced_at": "2026-09-24T12:53:34.345Z",
      "location_count": 4,
      "location_summary": "Chicago, Illinois • New York, New York • Columbus, Ohio + 1 more",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00472212"
    },
    {
      "nct_id": "NCT05070767",
      "title": "Neurolens Headache Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Binocular Vision Disorder",
        "Convergence Insufficiency",
        "Headache",
        "Computer Vision Syndrome"
      ],
      "interventions": [
        {
          "name": "Neurolens spectacle lens",
          "type": "DEVICE"
        },
        {
          "name": "Placebo spectacle lens",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Neurolens Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 300,
      "start_date": "2021-10-18",
      "completion_date": "2022-05-30",
      "has_results": false,
      "last_update_posted_date": "2023-10-12",
      "last_synced_at": "2026-09-24T12:53:34.345Z",
      "location_count": 10,
      "location_summary": "Phoenix, Arizona • Conyers, Georgia • Perry, Georgia + 7 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Conyers",
          "state": "Georgia"
        },
        {
          "city": "Perry",
          "state": "Georgia"
        },
        {
          "city": "Rigby",
          "state": "Idaho"
        },
        {
          "city": "Lincoln",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05070767"
    },
    {
      "nct_id": "NCT00785135",
      "title": "Effects of Prismatic Spectacle Lenses on Symptoms of Dizziness, Headache and Anxiety as Caused by Vertical Heterophoria",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Binocular Dysfunction",
        "Vertical Heterophoria",
        "Vision, Binocular",
        "Vision Disparity"
      ],
      "interventions": [
        {
          "name": "Lenses containing prismatic correction",
          "type": "DEVICE"
        },
        {
          "name": "Lenses not containing prismatic correction",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Vision Specialists of Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "14 Years and older"
      },
      "enrollment_count": 13,
      "start_date": "2008-11",
      "completion_date": "2015-11",
      "has_results": false,
      "last_update_posted_date": "2020-10-12",
      "last_synced_at": "2026-09-24T12:53:34.345Z",
      "location_count": 1,
      "location_summary": "Birmingham, Michigan",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00785135"
    },
    {
      "nct_id": "NCT05491746",
      "title": "Diabetic Retinopathy Tethered Augmented Reality With Eye4 Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetic Retinopathy",
        "Low Vision"
      ],
      "interventions": [
        {
          "name": "Eye4",
          "type": "DEVICE"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "Eyedaptic",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2022-07-01",
      "completion_date": "2022-10-01",
      "has_results": false,
      "last_update_posted_date": "2023-02-15",
      "last_synced_at": "2026-09-24T12:53:34.345Z",
      "location_count": 1,
      "location_summary": "Laguna Hills, California",
      "locations": [
        {
          "city": "Laguna Hills",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05491746"
    },
    {
      "nct_id": "NCT07391852",
      "title": "Circadian Light Exposure Adjustment for Restfulness",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep Onset Latency"
      ],
      "interventions": [
        {
          "name": "Amber Tinted Glasses",
          "type": "DEVICE"
        },
        {
          "name": "Clear Glasses",
          "type": "DEVICE"
        },
        {
          "name": "Smart Lightbulbs",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Arizona",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Months",
        "maximum_age": "83 Months",
        "sex": "ALL",
        "summary": "60 Months to 83 Months"
      },
      "enrollment_count": 60,
      "start_date": "2026-01-15",
      "completion_date": "2030-07-31",
      "has_results": false,
      "last_update_posted_date": "2026-02-06",
      "last_synced_at": "2026-09-24T12:53:34.345Z",
      "location_count": 1,
      "location_summary": "Tucson, Arizona",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07391852"
    }
  ]
}