{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=VISUAL+FIELD+TESTING&page=2",
    "query": {
      "intervention": "VISUAL FIELD TESTING",
      "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=VISUAL+FIELD+TESTING&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-24T19:13:00.588Z",
  "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": "NCT06217575",
      "title": "Brain Research Assessing Impacts of Neurophysiological Processing Speed Training in Veterans",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Traumatic Brain Injury",
        "Mild Traumatic Brain Injury",
        "Aging",
        "Cognitive Decline"
      ],
      "interventions": [
        {
          "name": "Alpha neurofeedback training",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Visual Attention Training",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "50 Years to 85 Years"
      },
      "enrollment_count": 36,
      "start_date": "2025-07-01",
      "completion_date": "2028-04-01",
      "has_results": false,
      "last_update_posted_date": "2026-08-07",
      "last_synced_at": "2026-09-24T19:13:00.588Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06217575"
    },
    {
      "nct_id": "NCT01051739",
      "title": "Variability in Perimetry Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Glaucoma"
      ],
      "interventions": [
        {
          "name": "Comparison of four visual field testing strategies",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 180,
      "start_date": "2010-07",
      "completion_date": "2015-09",
      "has_results": true,
      "last_update_posted_date": "2017-03-21",
      "last_synced_at": "2026-09-24T19:13:00.588Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01051739"
    },
    {
      "nct_id": "NCT06882356",
      "title": "The Glaucoma and Retinopathy Screening Study",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Glaucoma"
      ],
      "interventions": [
        {
          "name": "AI-based glaucoma screening",
          "type": "DEVICE"
        },
        {
          "name": "IOP measurement",
          "type": "DEVICE"
        },
        {
          "name": "Virtual Reality Visual Field Testing",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Massachusetts Eye and Ear Infirmary",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 2000,
      "start_date": "2025-07-16",
      "completion_date": "2030-09",
      "has_results": false,
      "last_update_posted_date": "2026-08-27",
      "last_synced_at": "2026-09-24T19:13:00.588Z",
      "location_count": 7,
      "location_summary": "Boston, Massachusetts • Chelsea, Massachusetts • Lynn, Massachusetts + 2 more",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Chelsea",
          "state": "Massachusetts"
        },
        {
          "city": "Lynn",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06882356"
    },
    {
      "nct_id": "NCT03779659",
      "title": "Effectiveness of Synapse Transcutaneous Electronic Nerve Stimulation (TENS) During Dental Procedures Among Children",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dental Fear",
        "Anesthesia, Local",
        "Pediatric Dentistry"
      ],
      "interventions": [
        {
          "name": "Synapse TENS device",
          "type": "DEVICE"
        },
        {
          "name": "Topical anesthetic gel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "DRUG"
      ],
      "sponsor": "Boston University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "14 Years",
        "sex": "ALL",
        "summary": "6 Years to 14 Years"
      },
      "enrollment_count": 0,
      "start_date": "2021-07",
      "completion_date": "2023-02",
      "has_results": false,
      "last_update_posted_date": "2021-06-08",
      "last_synced_at": "2026-09-24T19:13:00.588Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03779659"
    },
    {
      "nct_id": "NCT00613886",
      "title": "Factors Predicting Response to Shunting in Normal Pressure Hydrocephalus",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Normal Pressure Hydrocephalus"
      ],
      "interventions": [
        {
          "name": "Programmable Shunt Insertion (Codman, Medtronic)",
          "type": "DEVICE"
        },
        {
          "name": "Assessments in physical therapy, occupational therapy, and speech therapy",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, Irvine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 24,
      "start_date": "2006-03",
      "completion_date": "2009-04",
      "has_results": true,
      "last_update_posted_date": "2021-01-12",
      "last_synced_at": "2026-09-24T19:13:00.588Z",
      "location_count": 1,
      "location_summary": "Orange, California",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00613886"
    },
    {
      "nct_id": "NCT05141604",
      "title": "Feasibility Test of Virtual Reality Obstacle Detection for Low Vision Walking",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hemianopsia",
        "Homonymous Hemianopia",
        "Tunnel Vision",
        "Visual Field Defect, Peripheral",
        "Visual Field Constriction Bilateral",
        "Visual Field Defect Homonymous Bilateral"
      ],
      "interventions": [
        {
          "name": "Field expansion view",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Massachusetts Eye and Ear Infirmary",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "14 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2022-05-17",
      "completion_date": "2027-05-31",
      "has_results": false,
      "last_update_posted_date": "2026-07-02",
      "last_synced_at": "2026-09-24T19:13:00.588Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05141604"
    },
    {
      "nct_id": "NCT04359108",
      "title": "Environmental Localization Mapping and Guidance for Visual Prosthesis Users",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Retinitis Pigmentosa",
        "Visual Impairment",
        "Visual Prosthesis"
      ],
      "interventions": [
        {
          "name": "Navigation system mode: Argus Vision",
          "type": "DEVICE"
        },
        {
          "name": "Navigation system mode: Depth Vision",
          "type": "DEVICE"
        },
        {
          "name": "Navigation system mode: Depth Vision with Haptic / Audio",
          "type": "DEVICE"
        },
        {
          "name": "Navigation system mode: Haptic / Audio",
          "type": "DEVICE"
        },
        {
          "name": "Navigation system mode: High Field-of-View Depth Vision",
          "type": "DEVICE"
        },
        {
          "name": "Distance test vision mode: Low Resolution / Low Field-of-View",
          "type": "DEVICE"
        },
        {
          "name": "Distance test vision mode: Low Resolution / High Field-of-View",
          "type": "DEVICE"
        },
        {
          "name": "Distance test vision mode: High Resolution / Low Field-of-View",
          "type": "DEVICE"
        },
        {
          "name": "Distance test vision mode: High Resolution / High Field-of-View",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 26,
      "start_date": "2021-03-16",
      "completion_date": "2024-09-30",
      "has_results": true,
      "last_update_posted_date": "2025-03-10",
      "last_synced_at": "2026-09-24T19:13:00.588Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland • Laurel, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Laurel",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04359108"
    },
    {
      "nct_id": "NCT03065907",
      "title": "Timing of Low Vision Rehabilitation in Anti- Vascular Endothelial Growth Factor (VEGF) Therapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Low Vision",
        "Neovascular Age-related Macular Degeneration"
      ],
      "interventions": [
        {
          "name": "Vision rehabilitation",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "105 Years",
        "sex": "ALL",
        "summary": "50 Years to 105 Years"
      },
      "enrollment_count": 3,
      "start_date": "2018-01-15",
      "completion_date": "2019-12-01",
      "has_results": false,
      "last_update_posted_date": "2019-12-16",
      "last_synced_at": "2026-09-24T19:13:00.588Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03065907"
    },
    {
      "nct_id": "NCT03322930",
      "title": "Rod Sensitivity in Age-related Macular Degeneration (AMD) and Retinitis Pigmentosa (RP)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Retinitis Pigmentosa",
        "AMD"
      ],
      "interventions": [
        {
          "name": "Rod sensitivity",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Retina Foundation of the Southwest",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "10 Years to 85 Years"
      },
      "enrollment_count": 40,
      "start_date": "2017-10-01",
      "completion_date": "2019-03-01",
      "has_results": true,
      "last_update_posted_date": "2019-12-23",
      "last_synced_at": "2026-09-24T19:13:00.588Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03322930"
    },
    {
      "nct_id": "NCT00441194",
      "title": "To Compare the Octopus 311 and the Humphrey Field Analyzer 700 Series",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Visual Field"
      ],
      "interventions": [
        {
          "name": "Visual Field (Octopus 311 and the HFA 700 series)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Haag Streit USA",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 80,
      "start_date": "2006-11",
      "completion_date": "2007-05",
      "has_results": false,
      "last_update_posted_date": "2012-03-05",
      "last_synced_at": "2026-09-24T19:13:00.588Z",
      "location_count": 1,
      "location_summary": "Fairfax, Virginia",
      "locations": [
        {
          "city": "Fairfax",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00441194"
    }
  ]
}