{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Contrast+Sensitivity+Testing&page=2",
    "query": {
      "intervention": "Contrast Sensitivity 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=Contrast+Sensitivity+Testing&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-04T05:44:29.709Z",
  "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": "NCT03222037",
      "title": "Evaluation of Electronic LogMar Visual Acuity and Contrast Sensitivity in a Population of Contact Lens Wearers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Visual Acuity"
      ],
      "interventions": [
        {
          "name": "senofilcon A",
          "type": "DEVICE"
        },
        {
          "name": "Control",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Johnson & Johnson Vision Care, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "18 Years to 35 Years"
      },
      "enrollment_count": 49,
      "start_date": "2017-06-27",
      "completion_date": "2017-08-04",
      "has_results": true,
      "last_update_posted_date": "2019-09-10",
      "last_synced_at": "2026-09-04T05:44:29.709Z",
      "location_count": 1,
      "location_summary": "Jacksonville, Florida",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03222037"
    },
    {
      "nct_id": "NCT01300949",
      "title": "Spaeth/Richman Contrast Sensitivity Test",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Glaucoma"
      ],
      "interventions": [
        {
          "name": "Spaeth/Richman Contrast Sensitivity Test",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Pelli-Robson Contrast Sensitivity Chart",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Wills Eye",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 314,
      "start_date": "2010-01",
      "completion_date": "2014-04",
      "has_results": true,
      "last_update_posted_date": "2018-12-11",
      "last_synced_at": "2026-09-04T05:44:29.709Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01300949"
    },
    {
      "nct_id": "NCT04294641",
      "title": "Front Line Ibrutinib Without Corticosteroids for Newly Diagnosed Chronic Graft-versus-Host Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic GVHD"
      ],
      "interventions": [
        {
          "name": "Ibrutinib",
          "type": "DRUG"
        },
        {
          "name": "ECG",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "PFT's",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "CT",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Steroid pulse (prednisone)",
          "type": "DRUG"
        },
        {
          "name": "Voriconazole",
          "type": "DRUG"
        },
        {
          "name": "Posaconazole",
          "type": "DRUG"
        },
        {
          "name": "Azithromycin",
          "type": "DRUG"
        },
        {
          "name": "Montelukast",
          "type": "DRUG"
        },
        {
          "name": "Budesonide",
          "type": "DRUG"
        },
        {
          "name": "Beclomethasone",
          "type": "DRUG"
        },
        {
          "name": "Filgrastim",
          "type": "OTHER"
        },
        {
          "name": "Pegfilgrastim",
          "type": "OTHER"
        },
        {
          "name": "Erythropoietin",
          "type": "OTHER"
        },
        {
          "name": "Transfusions",
          "type": "OTHER"
        },
        {
          "name": "Oral/Skin biopsy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIAGNOSTIC_TEST",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2021-05-10",
      "completion_date": "2024-10-01",
      "has_results": true,
      "last_update_posted_date": "2026-01-23",
      "last_synced_at": "2026-09-04T05:44:29.709Z",
      "location_count": 2,
      "location_summary": "Bethesda, Maryland • St Louis, Missouri",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04294641"
    },
    {
      "nct_id": "NCT07270133",
      "title": "Longitudinal Natural History Study of Retinal Function in Eyes of Patients With Diabetes",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Diabetic Retinal Disease"
      ],
      "interventions": [
        {
          "name": "Visual Acuity",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Reading Speed",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Visual Field testing",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Contrast sensitivity",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Electroretinography (ERG) and pupillography in light- and dark-adapted states",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Ultrawide field-color photograph",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Ultrawide field-Fluorescein angiogram",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Optical coherence tomography",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Optical coherence tomography- Angiography",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "Jaeb Center for Health Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 450,
      "start_date": "2026-06-01",
      "completion_date": "2032-12",
      "has_results": false,
      "last_update_posted_date": "2026-08-20",
      "last_synced_at": "2026-09-04T05:44:29.709Z",
      "location_count": 4,
      "location_summary": "Augusta, Georgia • Boston, Massachusetts • Detroit, Michigan + 1 more",
      "locations": [
        {
          "city": "Augusta",
          "state": "Georgia"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Monroeville",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07270133"
    },
    {
      "nct_id": "NCT05454124",
      "title": "Factors in Learning And Plasticity: Macular Degeneration",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Central Visual Impairment",
        "Macular Degeneration"
      ],
      "interventions": [
        {
          "name": "Training visual sensitivity",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Combination training",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "18 Years to 89 Years"
      },
      "enrollment_count": 60,
      "start_date": "2022-11-01",
      "completion_date": "2026-11",
      "has_results": false,
      "last_update_posted_date": "2026-02-09",
      "last_synced_at": "2026-09-04T05:44:29.709Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05454124"
    },
    {
      "nct_id": "NCT04683692",
      "title": "A Study to Assess the Use of The Sentinel Device During Atrial Fibrillation Ablation",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Atrial Fibrillation"
      ],
      "interventions": [
        {
          "name": "Magnetic Resonance Imaging (MRI)",
          "type": "DEVICE"
        },
        {
          "name": "Laboratory Testing",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER"
      ],
      "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": 0,
      "start_date": "2023-03",
      "completion_date": "2024-12",
      "has_results": false,
      "last_update_posted_date": "2023-04-14",
      "last_synced_at": "2026-09-04T05:44:29.709Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04683692"
    },
    {
      "nct_id": "NCT02107131",
      "title": "Performance Assessment Tests in Working Individuals With DME Following Treatment With Ranibizumab",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Diabetic Macular Edema"
      ],
      "interventions": [
        {
          "name": "Intravitreal ranibizumab 0.3mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "California Retina Consultants",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2015-03-13",
      "completion_date": "2017-05-15",
      "has_results": true,
      "last_update_posted_date": "2018-12-19",
      "last_synced_at": "2026-09-04T05:44:29.709Z",
      "location_count": 6,
      "location_summary": "Bakersfield, California • Oxnard, California • Palmdale, California + 3 more",
      "locations": [
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Oxnard",
          "state": "California"
        },
        {
          "city": "Palmdale",
          "state": "California"
        },
        {
          "city": "Santa Barbara",
          "state": "California"
        },
        {
          "city": "Santa Maria",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02107131"
    },
    {
      "nct_id": "NCT04130607",
      "title": "A Study to Evaluate Strategies for Teaching Effective Use of Diagnostic Tests",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Instructional Methods"
      ],
      "interventions": [
        {
          "name": "Conceptual teaching",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Sentara Norfolk General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 65,
      "start_date": "2018-05-15",
      "completion_date": "2019-10-15",
      "has_results": false,
      "last_update_posted_date": "2019-10-17",
      "last_synced_at": "2026-09-04T05:44:29.709Z",
      "location_count": 1,
      "location_summary": "Norfolk, Virginia",
      "locations": [
        {
          "city": "Norfolk",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04130607"
    },
    {
      "nct_id": "NCT02177669",
      "title": "Test-Retest Variability of Quick Contrast Sensitivity Function Testing",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "quick Contrast Sensitivity Function test",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Nova Southeastern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "20 Years to 89 Years"
      },
      "enrollment_count": 100,
      "start_date": "2014-06",
      "completion_date": "2016-11",
      "has_results": false,
      "last_update_posted_date": "2017-04-11",
      "last_synced_at": "2026-09-04T05:44:29.709Z",
      "location_count": 1,
      "location_summary": "Fort Lauderdale, Florida",
      "locations": [
        {
          "city": "Fort Lauderdale",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02177669"
    },
    {
      "nct_id": "NCT03456986",
      "title": "Improvements in Cognitive Skills of Older Adults Using Dynamic Visual Attention Training",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Age Related Cognitive Decline"
      ],
      "interventions": [
        {
          "name": "PATH neurotraining",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Orientation Discrimination",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Perception Dynamics Institute",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "55 Years to 75 Years"
      },
      "enrollment_count": 0,
      "start_date": "2018-09-04",
      "completion_date": "2021-09-30",
      "has_results": false,
      "last_update_posted_date": "2020-03-04",
      "last_synced_at": "2026-09-04T05:44:29.709Z",
      "location_count": 2,
      "location_summary": "La Jolla, California • Solana Beach, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Solana Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03456986"
    }
  ]
}