{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Visual+Acuity+Testing&page=2",
    "query": {
      "intervention": "Visual Acuity 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+Acuity+Testing&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-06T05:02:21.264Z",
  "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": "NCT02187796",
      "title": "Prevalence of HIV-associated Neurocognitive Disorders (HAND) in a School of Medicine HIV/AIDS Outpatient Clinic",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "HIV-ASSOCIATED NEUROCOGNITIVE DISORDER (HAND)"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "East Tennessee State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "25 Years to 75 Years"
      },
      "enrollment_count": 50,
      "start_date": "2014-05",
      "completion_date": "2015-06",
      "has_results": false,
      "last_update_posted_date": "2015-08-04",
      "last_synced_at": "2026-09-06T05:02:21.264Z",
      "location_count": 1,
      "location_summary": "Johnson City, Tennessee",
      "locations": [
        {
          "city": "Johnson City",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02187796"
    },
    {
      "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": "2026-09-06T05:02:21.264Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05325996"
    },
    {
      "nct_id": "NCT06934577",
      "title": "Michigan Screening and Intervention for Glaucoma and Eye Health Through Telemedicine (SIGHT) 2",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Eye Diseases",
        "Visual Impairment",
        "Glaucoma"
      ],
      "interventions": [
        {
          "name": "Standard optometric examination",
          "type": "OTHER"
        },
        {
          "name": "Technology enhanced eye disease detection protocol",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 900,
      "start_date": "2025-12-04",
      "completion_date": "2030-08",
      "has_results": false,
      "last_update_posted_date": "2025-12-15",
      "last_synced_at": "2026-09-06T05:02:21.264Z",
      "location_count": 1,
      "location_summary": "Flint, Michigan",
      "locations": [
        {
          "city": "Flint",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06934577"
    },
    {
      "nct_id": "NCT05004649",
      "title": "Studying the Effects of Natural Visual Scene Changes on Typical Adult Visual Perception",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Visual Perception"
      ],
      "interventions": [
        {
          "name": "Psychophysical task",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 19,
      "start_date": "2021-08-09",
      "completion_date": "2022-03-23",
      "has_results": true,
      "last_update_posted_date": "2023-05-10",
      "last_synced_at": "2026-09-06T05:02:21.264Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05004649"
    },
    {
      "nct_id": "NCT02871817",
      "title": "A Comparison of the Checkup Vision Assessment System to Standard Vision Assessment Tools",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Age - Related Macular Degeneration",
        "Diabetic Retinopathy",
        "Metamorphopsia"
      ],
      "interventions": [
        {
          "name": "Paxos Checkup Study Mobile Medical Application",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Digisight 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": 143,
      "start_date": "2016-07",
      "completion_date": "2018-03",
      "has_results": false,
      "last_update_posted_date": "2018-01-26",
      "last_synced_at": "2026-09-06T05:02:21.264Z",
      "location_count": 12,
      "location_summary": "Phoenix, Arizona • Mountain View, California • Fort Myers, Florida + 9 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Mountain View",
          "state": "California"
        },
        {
          "city": "Fort Myers",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Tallahassee",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02871817"
    },
    {
      "nct_id": "NCT06041139",
      "title": "Visual Outcomes and Patient Satisfaction With Bilateral PanOptix Verses Bilateral Synergy",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pseudophakia"
      ],
      "interventions": [
        {
          "name": "Visual Acuity",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Defocus Curve",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Halo and Glare testing",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Patient Questionnaires",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "Berkeley Eye Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 230,
      "start_date": "2022-09-12",
      "completion_date": "2024-04-16",
      "has_results": true,
      "last_update_posted_date": "2025-05-23",
      "last_synced_at": "2026-09-06T05:02:21.264Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06041139"
    },
    {
      "nct_id": "NCT06431295",
      "title": "Evaluation of a Digital Visual Acuity Device vs. Standard Visual Acuity Measurements",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Visual Acuity"
      ],
      "interventions": [
        {
          "name": "FaceScan",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 150,
      "start_date": "2027-10-01",
      "completion_date": "2029-06",
      "has_results": false,
      "last_update_posted_date": "2025-11-19",
      "last_synced_at": "2026-09-06T05:02:21.264Z",
      "location_count": 1,
      "location_summary": "Jacksonville, Florida",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06431295"
    },
    {
      "nct_id": "NCT07253532",
      "title": "Vibrotactile Balance Belt Effect on Improving Gait",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vestibular Hypofunction",
        "Ataxia - Other",
        "Gait Impairment"
      ],
      "interventions": [
        {
          "name": "BalanceBelt",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 90,
      "start_date": "2026-03-20",
      "completion_date": "2030-12-01",
      "has_results": false,
      "last_update_posted_date": "2026-03-27",
      "last_synced_at": "2026-09-06T05:02:21.264Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07253532"
    },
    {
      "nct_id": "NCT06920290",
      "title": "Visual Field Analysis With Artificial Intelligence",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Glaucoma",
        "Visual Field Defect"
      ],
      "interventions": [
        {
          "name": "Visual Field Perimeter Optimized with Eye Gaze Capture and Artificial Intelligence",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Sight Intelligence Engineering Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 100,
      "start_date": "2025-07-01",
      "completion_date": "2026-08-31",
      "has_results": false,
      "last_update_posted_date": "2025-11-03",
      "last_synced_at": "2026-09-06T05:02:21.264Z",
      "location_count": 1,
      "location_summary": "Alexandria, Virginia",
      "locations": [
        {
          "city": "Alexandria",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06920290"
    },
    {
      "nct_id": "NCT00227253",
      "title": "Chromosome 18 Clinical Research Center",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chromosome Aberrations",
        "Growth Hormone Deficiency",
        "Hypomyelination"
      ],
      "interventions": [
        {
          "name": "Determination of growth hormone status",
          "type": "PROCEDURE"
        },
        {
          "name": "Measurement of growth, thyroid and sex hormone levels",
          "type": "PROCEDURE"
        },
        {
          "name": "Behavior and neuropsychometric evaluations",
          "type": "PROCEDURE"
        },
        {
          "name": "Audiological and ear, nose and throat examination",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic resonance imaging of the brain",
          "type": "PROCEDURE"
        },
        {
          "name": "Dysmorphology evaluation",
          "type": "PROCEDURE"
        },
        {
          "name": "Neurology examination",
          "type": "PROCEDURE"
        },
        {
          "name": "Dental evaluation",
          "type": "PROCEDURE"
        },
        {
          "name": "Speech pathology evaluation",
          "type": "PROCEDURE"
        },
        {
          "name": "Psychiatric evaluation",
          "type": "PROCEDURE"
        },
        {
          "name": "Orthopedic evaluation",
          "type": "PROCEDURE"
        },
        {
          "name": "Ophthalmologic evaluation",
          "type": "PROCEDURE"
        },
        {
          "name": "Gastrointestinal evaluation",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "The University of Texas Health Science Center at San Antonio",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 4000,
      "start_date": "1993-09",
      "completion_date": "2040-12",
      "has_results": false,
      "last_update_posted_date": "2026-01-06",
      "last_synced_at": "2026-09-06T05:02:21.264Z",
      "location_count": 2,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00227253"
    }
  ]
}