{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Visual+Function+Tests&page=20",
    "query": {
      "intervention": "Visual Function Tests",
      "page": 20
    },
    "page_size": 10
  },
  "pagination": {
    "page": 20,
    "page_size": 10,
    "total_count": 670,
    "total_pages": 67,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Visual+Function+Tests&page=21&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Visual+Function+Tests&page=19&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-29T04:44:06.354Z",
  "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": "NCT04420962",
      "title": "Automated Quantitative Ulcer Analysis Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Keratitis"
      ],
      "interventions": [
        {
          "name": "Visual Acuity",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "15 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "15 Years to 99 Years"
      },
      "enrollment_count": 124,
      "start_date": "2020-07-23",
      "completion_date": "2024-06-07",
      "has_results": false,
      "last_update_posted_date": "2025-05-02",
      "last_synced_at": "2026-10-29T04:44:06.354Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04420962"
    },
    {
      "nct_id": "NCT05076734",
      "title": "Cell- Based Noninvasive Prenatal Testing (NIPT): Single Cell Prenatal Diagnosis (SCPD)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pregnancy Related"
      ],
      "interventions": [
        {
          "name": "Redraw for analysis of blood samples from healthy pregnant women",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Luna Genetics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 65 Years · Female only"
      },
      "enrollment_count": 157,
      "start_date": "2020-06-12",
      "completion_date": "2021-12-30",
      "has_results": false,
      "last_update_posted_date": "2023-03-24",
      "last_synced_at": "2026-10-29T04:44:06.354Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05076734"
    },
    {
      "nct_id": "NCT01711593",
      "title": "Induced Tolerogenic Dendritic Cells as Modulators of Allergic Asthma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Asthma",
        "Allergies"
      ],
      "interventions": [
        {
          "name": "Bronchoscopy, Segmental Allergen Challenge and Bronchoalveolar Lavage",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Phlebotomy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "PROCEDURE"
      ],
      "sponsor": "Andrew D. Luster, M.D.,Ph.D.",
      "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": 43,
      "start_date": "2013-01",
      "completion_date": "2016-09",
      "has_results": false,
      "last_update_posted_date": "2026-09-28",
      "last_synced_at": "2026-10-29T04:44:06.354Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01711593"
    },
    {
      "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": "2026-10-29T04:44:06.354Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05141604"
    },
    {
      "nct_id": "NCT02132481",
      "title": "Using Smartphones to Provide Recovery Support Services",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Substance Use Disorder (SUD)",
        "Recovery"
      ],
      "interventions": [
        {
          "name": "EMA Only",
          "type": "OTHER"
        },
        {
          "name": "EMI Only",
          "type": "OTHER"
        },
        {
          "name": "EMA+EMI",
          "type": "OTHER"
        },
        {
          "name": "Neither - RSAU",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Chestnut Health Systems",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 401,
      "start_date": "2015-06",
      "completion_date": "2021-02-28",
      "has_results": false,
      "last_update_posted_date": "2021-07-28",
      "last_synced_at": "2026-10-29T04:44:06.354Z",
      "location_count": 3,
      "location_summary": "Chicago, Illinois • Normal, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Normal",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02132481"
    },
    {
      "nct_id": "NCT01042665",
      "title": "Relationship Between Eye Pressure and Ganglion Cell Function in Eyes Receiving Latanoprost Versus Placebo",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Glaucoma"
      ],
      "interventions": [
        {
          "name": "latanoprost 0.005%",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 82,
      "start_date": "2006-02",
      "completion_date": "2009-12",
      "has_results": false,
      "last_update_posted_date": "2014-03-28",
      "last_synced_at": "2026-10-29T04:44:06.354Z",
      "location_count": 1,
      "location_summary": "Palm Beach Gardens, Florida",
      "locations": [
        {
          "city": "Palm Beach Gardens",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01042665"
    },
    {
      "nct_id": "NCT03127709",
      "title": "A Study of Memory, Thinking, and Brain Imaging in Adults With Histiocytosis",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Histiocytosis"
      ],
      "interventions": [
        {
          "name": "Trail Making Test, Parts A & B",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Brief Test of Attention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Symbol Span",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Controlled Oral Word Association Test",
          "type": "BEHAVIORAL"
        },
        {
          "name": "The Hopkins Verbal Learning Test-Revised",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Brief Visuospatial Memory Test-Revised",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Hospital Anxiety and Depression Scale",
          "type": "BEHAVIORAL"
        },
        {
          "name": "McGill Quality of Life Scale",
          "type": "BEHAVIORAL"
        },
        {
          "name": "MR Brain Imaging",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Resting state functional MRI",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Functional Assessment of Cancer Therapy Cognitive Scale (FACT-Cog)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 13,
      "start_date": "2017-04-07",
      "completion_date": "2027-04",
      "has_results": false,
      "last_update_posted_date": "2026-05-07",
      "last_synced_at": "2026-10-29T04:44:06.354Z",
      "location_count": 4,
      "location_summary": "Basking Ridge, New Jersey • Middletown, New Jersey • Commack, New York + 1 more",
      "locations": [
        {
          "city": "Basking Ridge",
          "state": "New Jersey"
        },
        {
          "city": "Middletown",
          "state": "New Jersey"
        },
        {
          "city": "Commack",
          "state": "New York"
        },
        {
          "city": "Harrison",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03127709"
    },
    {
      "nct_id": "NCT03579121",
      "title": "Genomic Opioid Optimization of Dosing and Selections (GOODS) Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Perioperative/Postoperative Complications"
      ],
      "interventions": [
        {
          "name": "Pharmacogenomic (PGx)",
          "type": "OTHER"
        },
        {
          "name": "Review results",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 76,
      "start_date": "2018-10-12",
      "completion_date": "2022-04-01",
      "has_results": false,
      "last_update_posted_date": "2022-06-15",
      "last_synced_at": "2026-10-29T04:44:06.354Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03579121"
    },
    {
      "nct_id": "NCT03007147",
      "title": "Imatinib Mesylate and Combination Chemotherapy in Treating Patients With Newly Diagnosed Philadelphia Chromosome Positive Acute Lymphoblastic Leukemia",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Acute Lymphoblastic Leukemia",
        "B Acute Lymphoblastic Leukemia",
        "Mixed Phenotype Acute Leukemia",
        "T Acute Lymphoblastic Leukemia"
      ],
      "interventions": [
        {
          "name": "Allogeneic Hematopoietic Stem Cell Transplantation",
          "type": "PROCEDURE"
        },
        {
          "name": "Calaspargase Pegol",
          "type": "DRUG"
        },
        {
          "name": "Cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Cytarabine",
          "type": "DRUG"
        },
        {
          "name": "Daunorubicin Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Dexamethasone",
          "type": "DRUG"
        },
        {
          "name": "Dexrazoxane Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Doxorubicin",
          "type": "DRUG"
        },
        {
          "name": "Etoposide",
          "type": "DRUG"
        },
        {
          "name": "Filgrastim",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Ifosfamide",
          "type": "DRUG"
        },
        {
          "name": "Imatinib Mesylate",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Leucovorin Calcium",
          "type": "DRUG"
        },
        {
          "name": "Levoleucovorin",
          "type": "DRUG"
        },
        {
          "name": "Mercaptopurine",
          "type": "DRUG"
        },
        {
          "name": "Methotrexate",
          "type": "DRUG"
        },
        {
          "name": "Methylprednisolone",
          "type": "DRUG"
        },
        {
          "name": "Pegaspargase",
          "type": "DRUG"
        },
        {
          "name": "Prednisolone",
          "type": "DRUG"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Therapeutic Hydrocortisone",
          "type": "DRUG"
        },
        {
          "name": "Thioguanine",
          "type": "DRUG"
        },
        {
          "name": "Vincristine Sulfate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG",
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Children's Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "1 Year to 21 Years"
      },
      "enrollment_count": 352,
      "start_date": "2017-08-08",
      "completion_date": "2034-09-30",
      "has_results": false,
      "last_update_posted_date": "2026-10-05",
      "last_synced_at": "2026-10-29T04:44:06.354Z",
      "location_count": 184,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Anchorage, Alaska + 145 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03007147"
    },
    {
      "nct_id": "NCT07432555",
      "title": "Testing a Mobile Health Application to Improve HIV Prevention and Substance Use Treatment Among Women Involved in the Carceral System",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Substance Abuse",
        "HIV"
      ],
      "interventions": [
        {
          "name": "Tool to provide re-entry support and improve linkage to healthcare and social services",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Temple University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 74,
      "start_date": "2026-10-20",
      "completion_date": "2027-05-30",
      "has_results": false,
      "last_update_posted_date": "2026-09-29",
      "last_synced_at": "2026-10-29T04:44:06.354Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07432555"
    }
  ]
}