{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Tonometer&page=2",
    "query": {
      "intervention": "Tonometer",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Tonometer&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T04:39:50.366Z",
  "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": "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": "2026-09-03T04:39:50.366Z",
      "location_count": 1,
      "location_summary": "Tucson, Arizona",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02910362"
    },
    {
      "nct_id": "NCT00588692",
      "title": "Strategies for Aggressive Central Afterload Reduction in Patients With Heart Failure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "SphygmoCor",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2007-07",
      "completion_date": "2012-12",
      "has_results": true,
      "last_update_posted_date": "2014-05-06",
      "last_synced_at": "2026-09-03T04:39:50.366Z",
      "location_count": 2,
      "location_summary": "Phoenix, Arizona • Rochester, Minnesota",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00588692"
    },
    {
      "nct_id": "NCT05235321",
      "title": "Automated Applanation Tonometry",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Glaucoma",
        "Glaucoma, Suspect"
      ],
      "interventions": [
        {
          "name": "Standard GAT",
          "type": "DEVICE"
        },
        {
          "name": "Fixed force GAT",
          "type": "DEVICE"
        },
        {
          "name": "Upright applanating prototype",
          "type": "DEVICE"
        },
        {
          "name": "Supine Applanating Prototype",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 111,
      "start_date": "2022-11-21",
      "completion_date": "2024-05-31",
      "has_results": false,
      "last_update_posted_date": "2025-06-13",
      "last_synced_at": "2026-09-03T04:39:50.366Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05235321"
    },
    {
      "nct_id": "NCT00570791",
      "title": "Effect of Central Corneal Thickness On IOP Using Various Tonometers",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Intraocular Pressure"
      ],
      "interventions": [
        {
          "name": "Tonometer",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Nebraska",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 166,
      "start_date": "2005-06-29",
      "completion_date": "2011-11-01",
      "has_results": false,
      "last_update_posted_date": "2024-09-23",
      "last_synced_at": "2026-09-03T04:39:50.366Z",
      "location_count": 2,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        },
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00570791"
    },
    {
      "nct_id": "NCT02837536",
      "title": "Horizontal vs. Vertical Positioning of the iCare Rebound Tonometer and Effects on Intraocular Pressure Readings",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Intraocular Pressure"
      ],
      "interventions": [
        {
          "name": "Horizontal iCare",
          "type": "OTHER"
        },
        {
          "name": "Vertical iCare",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 107,
      "start_date": "2016-06-23",
      "completion_date": "2016-12-23",
      "has_results": false,
      "last_update_posted_date": "2017-03-08",
      "last_synced_at": "2026-09-03T04:39:50.366Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02837536"
    },
    {
      "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": "2026-09-03T04:39:50.366Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04708613"
    },
    {
      "nct_id": "NCT07298356",
      "title": "Automated Applanation Tonometry - Updated",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Glaucoma",
        "Glaucoma, Suspect"
      ],
      "interventions": [
        {
          "name": "Standard GAT",
          "type": "DEVICE"
        },
        {
          "name": "Fixed force GAT",
          "type": "DEVICE"
        },
        {
          "name": "Upright applanating prototype",
          "type": "DEVICE"
        },
        {
          "name": "Pneumotonometer",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 200,
      "start_date": "2026-03-02",
      "completion_date": "2026-12-29",
      "has_results": false,
      "last_update_posted_date": "2026-03-06",
      "last_synced_at": "2026-09-03T04:39:50.366Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07298356"
    },
    {
      "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": "2026-09-03T04:39:50.366Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04344626"
    },
    {
      "nct_id": "NCT06247072",
      "title": "TRK-3 Conformance to Standards for Tonometers",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Glaucoma"
      ],
      "interventions": [
        {
          "name": "Tonometer",
          "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": 125,
      "start_date": "2024-02-02",
      "completion_date": "2024-04-04",
      "has_results": false,
      "last_update_posted_date": "2024-04-08",
      "last_synced_at": "2026-09-03T04:39:50.366Z",
      "location_count": 2,
      "location_summary": "La Mesa, California • Chicago, Illinois",
      "locations": [
        {
          "city": "La Mesa",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06247072"
    },
    {
      "nct_id": "NCT02209636",
      "title": "Phosphate Lowering in CKD Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Chronic Kidney Disease",
        "Cardiovascular Disease"
      ],
      "interventions": [
        {
          "name": "Lanthanum carbonate",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        },
        {
          "name": "Ascorbic Acid",
          "type": "DRUG"
        },
        {
          "name": "Nitroglycerin",
          "type": "DRUG"
        },
        {
          "name": "Flow-mediated dilation measurement",
          "type": "PROCEDURE"
        },
        {
          "name": "Aortic pulse-wave velocity",
          "type": "PROCEDURE"
        },
        {
          "name": "Endothelial cell collection",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "79 Years",
        "sex": "ALL",
        "summary": "40 Years to 79 Years"
      },
      "enrollment_count": 66,
      "start_date": "2014-09-15",
      "completion_date": "2019-12-20",
      "has_results": true,
      "last_update_posted_date": "2022-08-26",
      "last_synced_at": "2026-09-03T04:39:50.366Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02209636"
    }
  ]
}