{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Visual+Acuity+%28VA%29",
    "query": {
      "intervention": "Visual Acuity (VA)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 12,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Visual+Acuity+%28VA%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-08T00:02:37.625Z",
  "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": "NCT04169802",
      "title": "Study Evaluating Retinal Health Monitoring System Visual Acuity Module.",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Age Related Macular Degeneration"
      ],
      "interventions": [
        {
          "name": "Retinal Health Monitoring System Visual Acuity Module",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Sloan letter, logarithmic near visual acuity chart (Reference Chart)",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Kubota Vision Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 25,
      "start_date": "2019-11-20",
      "completion_date": "2020-04-15",
      "has_results": false,
      "last_update_posted_date": "2021-02-21",
      "last_synced_at": "2026-09-08T00:02:37.625Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04169802"
    },
    {
      "nct_id": "NCT04356716",
      "title": "Sildenafil for Treatment of Choroidal Ischemia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Choroidal Ischemia",
        "Vitelliform Macular Dystrophy",
        "Age-related Macular Degeneration",
        "Central Serous Retinopathy",
        "Retinitis Pigmentosa"
      ],
      "interventions": [
        {
          "name": "Sildenafil",
          "type": "DRUG"
        },
        {
          "name": "Standard of Care Sildenafil",
          "type": "OTHER"
        },
        {
          "name": "Ocular Coherence Tomography-Angiography (OCT-A)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Visual Acuity (VA)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 22,
      "start_date": "2014-11-11",
      "completion_date": "2020-02-18",
      "has_results": true,
      "last_update_posted_date": "2025-07-04",
      "last_synced_at": "2026-09-08T00:02:37.625Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04356716"
    },
    {
      "nct_id": "NCT05026658",
      "title": "Prospective, Randomized, Controlled Agreement and Reproducibility Clinical Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Digital Acuity Product"
      ],
      "interventions": [
        {
          "name": "Visibly Digital Acuity Product",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Visibly",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "22 Years to 40 Years"
      },
      "enrollment_count": 358,
      "start_date": "2021-07-22",
      "completion_date": "2021-10-04",
      "has_results": false,
      "last_update_posted_date": "2024-11-04",
      "last_synced_at": "2026-09-08T00:02:37.625Z",
      "location_count": 3,
      "location_summary": "Andover, Massachusetts • Shelby, North Carolina • Memphis, Tennessee",
      "locations": [
        {
          "city": "Andover",
          "state": "Massachusetts"
        },
        {
          "city": "Shelby",
          "state": "North Carolina"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05026658"
    },
    {
      "nct_id": "NCT01277302",
      "title": "A Study Evaluating Dosing Regimens for Treatment With Intravitreal Ranibizumab Injections in Subjects With Macular Edema Following Retinal Vein Occlusion",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Macular Edema"
      ],
      "interventions": [
        {
          "name": "Ranibizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Genentech, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 202,
      "start_date": "2011-02",
      "completion_date": "2012-10",
      "has_results": true,
      "last_update_posted_date": "2014-04-23",
      "last_synced_at": "2026-09-08T00:02:37.625Z",
      "location_count": 42,
      "location_summary": "Phoenix, Arizona • Tucson, Arizona • Beverly Hills, California + 38 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Chico",
          "state": "California"
        },
        {
          "city": "Mountain View",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01277302"
    },
    {
      "nct_id": "NCT04765345",
      "title": "Rate of Progression of PCDH15-Related Retinal Degeneration in Usher Syndrome 1F",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Retinal Degeneration",
        "Retinitis Pigmentosa",
        "Eye Diseases, Hereditary"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Jaeb Center for Health Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "8 Years and older"
      },
      "enrollment_count": 44,
      "start_date": "2021-06-08",
      "completion_date": "2027-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-02-04",
      "last_synced_at": "2026-09-08T00:02:37.625Z",
      "location_count": 3,
      "location_summary": "San Francisco, California • Baltimore, Maryland • Durham, North Carolina",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04765345"
    },
    {
      "nct_id": "NCT03888482",
      "title": "Clinical Comparison of DDT2 Contact Lens and a Daily Disposable Contact Lens - Study 2",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Refractive Error",
        "Myopia"
      ],
      "interventions": [
        {
          "name": "Verofilcon A contact lenses",
          "type": "DEVICE"
        },
        {
          "name": "Somofilcon A contact lenses",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Alcon Research",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 154,
      "start_date": "2019-04-26",
      "completion_date": "2019-06-28",
      "has_results": true,
      "last_update_posted_date": "2020-07-13",
      "last_synced_at": "2026-09-08T00:02:37.625Z",
      "location_count": 8,
      "location_summary": "Jacksonville, Florida • Maitland, Florida • Orlando, Florida + 5 more",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Maitland",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Bloomington",
          "state": "Illinois"
        },
        {
          "city": "Powell",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03888482"
    },
    {
      "nct_id": "NCT05844982",
      "title": "Intravitreal Faricimab Injections or Fluocinolone Acetonide (0.19 mg) Intravitreal Implants vs Observation for Prevention of VA Loss Due to Radiation Retinopathy",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Radiation Retinopathy",
        "Visual Impairment"
      ],
      "interventions": [
        {
          "name": "Faricimab",
          "type": "DRUG"
        },
        {
          "name": "fluocinolone acetonide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "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": 600,
      "start_date": "2023-11-21",
      "completion_date": "2029-12-26",
      "has_results": false,
      "last_update_posted_date": "2026-08-20",
      "last_synced_at": "2026-09-08T00:02:37.625Z",
      "location_count": 27,
      "location_summary": "Palo Alto, California • Manchester, Connecticut • Tampa, Florida + 22 more",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Manchester",
          "state": "Connecticut"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05844982"
    },
    {
      "nct_id": "NCT01832883",
      "title": "Amblyopia and Strabismus Detection Using a Pediatric Vision Scanner",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Amblyopia",
        "Strabismus"
      ],
      "interventions": [
        {
          "name": "Pediatric Vision Scanner",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Rebiscan, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "8 Years",
        "sex": "ALL",
        "summary": "3 Years to 8 Years"
      },
      "enrollment_count": 78,
      "start_date": "2010-12",
      "completion_date": "2012-07",
      "has_results": false,
      "last_update_posted_date": "2018-04-13",
      "last_synced_at": "2026-09-08T00:02:37.625Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01832883"
    },
    {
      "nct_id": "NCT01909791",
      "title": "Treatment for CI-DME in Eyes With Very Good VA Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Diabetic Macular Edema"
      ],
      "interventions": [
        {
          "name": "Prompt Laser",
          "type": "PROCEDURE"
        },
        {
          "name": "Prompt aflibercept",
          "type": "DRUG"
        },
        {
          "name": "Deferred laser",
          "type": "PROCEDURE"
        },
        {
          "name": "Deferred aflibercept",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG"
      ],
      "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": 702,
      "start_date": "2013-10",
      "completion_date": "2018-09-11",
      "has_results": true,
      "last_update_posted_date": "2020-07-31",
      "last_synced_at": "2026-09-08T00:02:37.625Z",
      "location_count": 100,
      "location_summary": "Phoenix, Arizona • Tucson, Arizona • Little Rock, Arkansas + 84 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Campbell",
          "state": "California"
        },
        {
          "city": "Loma Linda",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01909791"
    },
    {
      "nct_id": "NCT01706991",
      "title": "Amblyopia and Strabismus Detection Using a Pediatric Vision Scanner",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Amblyopia",
        "Strabismus"
      ],
      "interventions": [
        {
          "name": "Pediatric Vision Scanner eye scan",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Rebiscan, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "6 Years",
        "sex": "ALL",
        "summary": "6 Months to 6 Years"
      },
      "enrollment_count": 32,
      "start_date": "2011-01",
      "completion_date": "2011-06",
      "has_results": false,
      "last_update_posted_date": "2012-10-15",
      "last_synced_at": "2026-09-08T00:02:37.625Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01706991"
    }
  ]
}