{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Bifocal+Contact+Lens",
    "query": {
      "intervention": "Bifocal Contact Lens"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 9,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-11T03:35:38.452Z",
  "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": "NCT03479827",
      "title": "Measuring the Peripheral Optical Quality of The Eye",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Nearsightedness"
      ],
      "interventions": [
        {
          "name": "Monofocal Contact Lens",
          "type": "DEVICE"
        },
        {
          "name": "Bifocal Contact Lens",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Rochester",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 24,
      "start_date": "2018-08-31",
      "completion_date": "2020-11-29",
      "has_results": false,
      "last_update_posted_date": "2022-08-16",
      "last_synced_at": "2026-09-11T03:35:38.452Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03479827"
    },
    {
      "nct_id": "NCT04080128",
      "title": "Examination of Myopia Progression and Soft Bifocal Contact Lens Myopia Control",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "Contact lenses",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "15 Years",
        "sex": "ALL",
        "summary": "10 Years to 15 Years"
      },
      "enrollment_count": 248,
      "start_date": "2019-09-09",
      "completion_date": "2024-01-04",
      "has_results": true,
      "last_update_posted_date": "2026-06-02",
      "last_synced_at": "2026-09-11T03:35:38.452Z",
      "location_count": 2,
      "location_summary": "Columbus, Ohio • Houston, Texas",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04080128"
    },
    {
      "nct_id": "NCT03653715",
      "title": "Bifocal Contact Lens Study for Adults With Age-Related Near Vision Loss",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Presbyopia"
      ],
      "interventions": [
        {
          "name": "Clerio Vision LIRIC-modified Bifocal Contact Lens",
          "type": "DEVICE"
        },
        {
          "name": "Johnson & Johnson 1-Day Acuvue Moist Multifocal Contact Lens",
          "type": "DEVICE"
        },
        {
          "name": "Johnson & Johnson 1-Day Acuvue Moist Contact Lens",
          "type": "DEVICE"
        },
        {
          "name": "Clerio Vision Single Vision Contact Lens",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Clerio Vision, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2018-08-06",
      "completion_date": "2018-10-12",
      "has_results": false,
      "last_update_posted_date": "2019-04-19",
      "last_synced_at": "2026-09-11T03:35:38.452Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03653715"
    },
    {
      "nct_id": "NCT03519490",
      "title": "Can Distance Center and Near Center Multifocal Contact Lenses Control Myopia Progression in Children?",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Myopia",
        "Myopia, Progressive"
      ],
      "interventions": [
        {
          "name": "Hybrid Contact Lens",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Thomas A. Aller, OD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "14 Years",
        "sex": "ALL",
        "summary": "7 Years to 14 Years"
      },
      "enrollment_count": 0,
      "start_date": "2018-06-01",
      "completion_date": "2020-08-31",
      "has_results": false,
      "last_update_posted_date": "2019-07-05",
      "last_synced_at": "2026-09-11T03:35:38.452Z",
      "location_count": 1,
      "location_summary": "San Bruno, California",
      "locations": [
        {
          "city": "San Bruno",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03519490"
    },
    {
      "nct_id": "NCT00808340",
      "title": "Comparison of Three Soft Bifocal Contact Lenses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Presbyopia"
      ],
      "interventions": [
        {
          "name": "balafilcon A",
          "type": "DEVICE"
        },
        {
          "name": "senofilcon A production",
          "type": "DEVICE"
        },
        {
          "name": "senofilcon A test",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Johnson & Johnson Vision Care, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "35 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "35 Years to 70 Years"
      },
      "enrollment_count": 37,
      "start_date": "2008-11-01",
      "completion_date": "2008-12-01",
      "has_results": true,
      "last_update_posted_date": "2018-06-19",
      "last_synced_at": "2026-09-11T03:35:38.452Z",
      "location_count": 1,
      "location_summary": "Roanoke, Virginia",
      "locations": [
        {
          "city": "Roanoke",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00808340"
    },
    {
      "nct_id": "NCT02255474",
      "title": "Bifocal Lenses In Nearsighted Kids",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Refractive Errors"
      ],
      "interventions": [
        {
          "name": "Biofinity Multifocal D +1.50 add",
          "type": "DEVICE"
        },
        {
          "name": "Biofinity Multifocal D +2.50 add",
          "type": "DEVICE"
        },
        {
          "name": "Biofinity",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "7 Years to 11 Years"
      },
      "enrollment_count": 294,
      "start_date": "2014-09-22",
      "completion_date": "2019-06-24",
      "has_results": true,
      "last_update_posted_date": "2021-03-10",
      "last_synced_at": "2026-09-11T03:35:38.452Z",
      "location_count": 2,
      "location_summary": "Columbus, Ohio • Houston, Texas",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02255474"
    },
    {
      "nct_id": "NCT00950924",
      "title": "Optical Defocus to Stimulate Eye Elongation in Hyperopia",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hyperopia",
        "Refractive Error"
      ],
      "interventions": [
        {
          "name": "Simultaneous Vision Bifocal Soft Contact Lenses",
          "type": "DEVICE"
        },
        {
          "name": "Single Vision Soft Contact Lenses",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Aller, Thomas A., OD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "5 Years to 12 Years"
      },
      "enrollment_count": 30,
      "start_date": "2015-01",
      "completion_date": "2022-01-01",
      "has_results": false,
      "last_update_posted_date": "2021-01-12",
      "last_synced_at": "2026-09-11T03:35:38.452Z",
      "location_count": 1,
      "location_summary": "San Bruno, California",
      "locations": [
        {
          "city": "San Bruno",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00950924"
    },
    {
      "nct_id": "NCT04437732",
      "title": "Apioc Presbyopic Contact Lens",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Presbyopia",
        "Refractive Errors"
      ],
      "interventions": [
        {
          "name": "Apioc-P and Apioc-PT Contact Lens Design",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Lentechs, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "40 Years to 70 Years"
      },
      "enrollment_count": 49,
      "start_date": "2019-11-11",
      "completion_date": "2021-06-09",
      "has_results": false,
      "last_update_posted_date": "2022-01-19",
      "last_synced_at": "2026-09-11T03:35:38.452Z",
      "location_count": 2,
      "location_summary": "Athens, Ohio • Powell, Ohio",
      "locations": [
        {
          "city": "Athens",
          "state": "Ohio"
        },
        {
          "city": "Powell",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04437732"
    },
    {
      "nct_id": "NCT00724945",
      "title": "Comparison of Two Soft Bifocal Contact Lenses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Presbyopia"
      ],
      "interventions": [
        {
          "name": "balafilcon A",
          "type": "DEVICE"
        },
        {
          "name": "senofilcon A",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Johnson & Johnson Vision Care, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "35 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "35 Years to 70 Years"
      },
      "enrollment_count": 113,
      "start_date": "2008-07",
      "completion_date": "2008-08",
      "has_results": true,
      "last_update_posted_date": "2015-05-21",
      "last_synced_at": "2026-09-11T03:35:38.452Z",
      "location_count": 6,
      "location_summary": "Jacksonville, Florida • Winter Park, Florida • East Lansing, Michigan + 1 more",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Winter Park",
          "state": "Florida"
        },
        {
          "city": "East Lansing",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00724945"
    }
  ]
}