{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Tonometer",
    "query": {
      "intervention": "Tonometer"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 41,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Tonometer&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T13:25:51.976Z",
  "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": "NCT04180111",
      "title": "Cross Linking Corneal Biomechanical Evaluation of CATS Tonometer Prism",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Keratoconus"
      ],
      "interventions": [
        {
          "name": "CATS Tonometer",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Intuor Technologies, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "101 Years",
        "sex": "ALL",
        "summary": "18 Years to 101 Years"
      },
      "enrollment_count": 18,
      "start_date": "2019-05-05",
      "completion_date": "2019-12-30",
      "has_results": false,
      "last_update_posted_date": "2019-11-27",
      "last_synced_at": "2026-09-03T13:25:51.976Z",
      "location_count": 1,
      "location_summary": "Tucson, Arizona",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04180111"
    },
    {
      "nct_id": "NCT05325996",
      "title": "Evaluating Home Testing Devices for the Management of Glaucoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Glaucoma, Open-Angle"
      ],
      "interventions": [
        {
          "name": "Standard Automatic Perimetry Humphrey Field Analyzer",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "visuALL H",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "iCare Home Tonometer",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Spectralis Optical coherence tomography (OCT)",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Wills Eye",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "20 Years to 80 Years"
      },
      "enrollment_count": 53,
      "start_date": "2022-04-15",
      "completion_date": "2026-08-17",
      "has_results": false,
      "last_update_posted_date": "2026-08-20",
      "last_synced_at": "2026-09-03T13:25:51.976Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05325996"
    },
    {
      "nct_id": "NCT04024566",
      "title": "Rapid Non-invasive Detection of Aortic Stenosis",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Valve Diseases",
        "Aortic Valve Disease",
        "Heart Murmurs"
      ],
      "interventions": [
        {
          "name": "Vivio System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Ventric Health, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": "95 Years",
        "sex": "ALL",
        "summary": "60 Years to 95 Years"
      },
      "enrollment_count": 0,
      "start_date": "2019-08-14",
      "completion_date": "2022-07-18",
      "has_results": false,
      "last_update_posted_date": "2022-07-20",
      "last_synced_at": "2026-09-03T13:25:51.976Z",
      "location_count": 1,
      "location_summary": "Pasadena, California",
      "locations": [
        {
          "city": "Pasadena",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04024566"
    },
    {
      "nct_id": "NCT06733428",
      "title": "Agreement and Precision Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Eye Abnormalities",
        "Normal Eyes"
      ],
      "interventions": [
        {
          "name": "Pachymeter",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Topcon Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 108,
      "start_date": "2025-01-09",
      "completion_date": "2025-01-28",
      "has_results": false,
      "last_update_posted_date": "2025-02-04",
      "last_synced_at": "2026-09-03T13:25:51.976Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06733428"
    },
    {
      "nct_id": "NCT03439774",
      "title": "Comparative Study of the Topcon Tonometers CT-800 and TRK-2P and the Haag-Streit Goldmann Manual Tonometer and Topcon SP-1P",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Intraocular Pressure"
      ],
      "interventions": [
        {
          "name": "Topcon CT-800",
          "type": "DEVICE"
        },
        {
          "name": "Topcon TRK-2P",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Topcon Medical Systems, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 345,
      "start_date": "2017-05-05",
      "completion_date": "2018-06-30",
      "has_results": false,
      "last_update_posted_date": "2022-06-08",
      "last_synced_at": "2026-09-03T13:25:51.976Z",
      "location_count": 1,
      "location_summary": "Andover, Massachusetts",
      "locations": [
        {
          "city": "Andover",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03439774"
    },
    {
      "nct_id": "NCT04344626",
      "title": "Use of a Tonometer to Identify Epileptogenic Lesions During Pediatric Epilepsy Surgery",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Epilepsy",
        "Focal Cortical Dysplasia",
        "Tuberous Sclerosis",
        "Hemimegalencephaly",
        "Polymicrogyria",
        "Rasmussen Encephalitis",
        "Sturge-Weber Syndrome",
        "Gliosis",
        "Stroke",
        "Tumor, Brain"
      ],
      "interventions": [
        {
          "name": "Intra-operative brain tonometry",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 0,
      "start_date": "2018-07-16",
      "completion_date": "2023-03",
      "has_results": false,
      "last_update_posted_date": "2023-10-10",
      "last_synced_at": "2026-09-03T13:25:51.976Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04344626"
    },
    {
      "nct_id": "NCT04708613",
      "title": "University of Pittsburgh Brain Health Initiative",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Traumatic Brain Injury"
      ],
      "interventions": [
        {
          "name": "Cognitive/Neuropsychological Testing",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Vestibular/Ocular-Motor Testing",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Sleep Evaluation",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "MRI, High-Resolution",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Health & Physical Exam",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Physical Function",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Blood Testing and Biomarker Analysis",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Applanation Tonometry",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "PET brain imaging",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "[C-11]6-OH-BTA-1",
          "type": "DRUG"
        },
        {
          "name": "[F-18]AV-1451",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "DRUG"
      ],
      "sponsor": "David Okonkwo, MD, PhD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "29 Years",
        "maximum_age": "59 Years",
        "sex": "MALE",
        "summary": "29 Years to 59 Years · Male only"
      },
      "enrollment_count": 300,
      "start_date": "2019-11-18",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-06-22",
      "last_synced_at": "2026-09-03T13:25:51.976Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04708613"
    },
    {
      "nct_id": "NCT02910362",
      "title": "Intra-surgical Evaluation of CATS Tonometer Prism and Abbott Medical Optics Versus Alcon Phacoemulsification Machines",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cataract Surgery"
      ],
      "interventions": [
        {
          "name": "Alcon phacoemulsification equipment",
          "type": "DEVICE"
        },
        {
          "name": "AMO phacoemulsification equipment",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Intuor Technologies, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2016-09",
      "completion_date": "2017-01",
      "has_results": true,
      "last_update_posted_date": "2018-10-11",
      "last_synced_at": "2026-09-03T13:25:51.976Z",
      "location_count": 1,
      "location_summary": "Tucson, Arizona",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02910362"
    },
    {
      "nct_id": "NCT05162989",
      "title": "iCare HOME2 Clinical Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Intraocular Pressure",
        "Glaucoma"
      ],
      "interventions": [
        {
          "name": "iCare HOME2 vs iCare IC200",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Icare Finland Oy",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 47,
      "start_date": "2021-11-26",
      "completion_date": "2021-12-15",
      "has_results": false,
      "last_update_posted_date": "2021-12-20",
      "last_synced_at": "2026-09-03T13:25:51.976Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05162989"
    },
    {
      "nct_id": "NCT00348179",
      "title": "Vascular Function in Adolescent, Diabetic Children",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Type 1 Diabetes"
      ],
      "interventions": [
        {
          "name": "Measurement of vascular function per SphymgnoCor equipment",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Children's Mercy Hospital Kansas City",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "14 Years",
        "sex": "ALL",
        "summary": "12 Years to 14 Years"
      },
      "enrollment_count": 85,
      "start_date": "2004-04",
      "completion_date": "2007-04",
      "has_results": false,
      "last_update_posted_date": "2008-01-24",
      "last_synced_at": "2026-09-03T13:25:51.976Z",
      "location_count": 1,
      "location_summary": "Kansas City, Missouri",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00348179"
    }
  ]
}