{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Spherical+contact+lenses",
    "query": {
      "intervention": "Spherical contact lenses"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 77,
    "total_pages": 8,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Spherical+contact+lenses&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-22T22:56:13.119Z",
  "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": "NCT03705130",
      "title": "Evaluation of Visual Performance With Contact Lenses",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "Single Vision Contact Lens",
          "type": "DEVICE"
        },
        {
          "name": "Multifocal Contact Lens 1",
          "type": "DEVICE"
        },
        {
          "name": "Multifocal Contact Lens 2",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "39 Years",
        "sex": "ALL",
        "summary": "18 Years to 39 Years"
      },
      "enrollment_count": 26,
      "start_date": "2018-06-14",
      "completion_date": "2018-07-26",
      "has_results": false,
      "last_update_posted_date": "2018-10-15",
      "last_synced_at": "2026-09-22T22:56:13.119Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03705130"
    },
    {
      "nct_id": "NCT06847230",
      "title": "How Does DT1 Sphere Perform in Current and Successful Acuvue MAX Wearers?",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Contact Lens Comfort and Successful Refitting"
      ],
      "interventions": [
        {
          "name": "Dailies total 1 contact lenses",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Southern College of Optometry",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 36,
      "start_date": "2024-07-15",
      "completion_date": "2024-11-30",
      "has_results": false,
      "last_update_posted_date": "2025-08-12",
      "last_synced_at": "2026-09-22T22:56:13.119Z",
      "location_count": 1,
      "location_summary": "Memphis, Tennessee",
      "locations": [
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06847230"
    },
    {
      "nct_id": "NCT03459131",
      "title": "Clinical Evaluation of Two Monthly Contact Lenses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Refractive Errors"
      ],
      "interventions": [
        {
          "name": "Comfilcon A with Digital Zone Optics™ contact lenses",
          "type": "DEVICE"
        },
        {
          "name": "Comfilcon A contact lenses",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Alcon Research",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "18 Years to 35 Years"
      },
      "enrollment_count": 15,
      "start_date": "2018-03-07",
      "completion_date": "2018-03-26",
      "has_results": true,
      "last_update_posted_date": "2019-03-05",
      "last_synced_at": "2026-09-22T22:56:13.119Z",
      "location_count": 1,
      "location_summary": "Maitland, Florida",
      "locations": [
        {
          "city": "Maitland",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03459131"
    },
    {
      "nct_id": "NCT03679741",
      "title": "Initial Evaluation of Investigational Lenses Manufactured on a New Production Line",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Visual Acuity"
      ],
      "interventions": [
        {
          "name": "CONTROL Lens",
          "type": "DEVICE"
        },
        {
          "name": "TEST Lens",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Johnson & Johnson Vision Care, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 126,
      "start_date": "2018-08-29",
      "completion_date": "2018-10-31",
      "has_results": true,
      "last_update_posted_date": "2019-12-26",
      "last_synced_at": "2026-09-22T22:56:13.119Z",
      "location_count": 6,
      "location_summary": "San Francisco, California • Jacksonville, Florida • Vestal, New York + 3 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Vestal",
          "state": "New York"
        },
        {
          "city": "Pickens",
          "state": "South Carolina"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03679741"
    },
    {
      "nct_id": "NCT05050578",
      "title": "Clinical Assessment of Two Reusable Silicone Hydrogel Contact Lenses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Refractive Errors"
      ],
      "interventions": [
        {
          "name": "Lehfilcon A contact lenses",
          "type": "DEVICE"
        },
        {
          "name": "Senofilcon A contact lenses",
          "type": "DEVICE"
        },
        {
          "name": "CLEAR CARE",
          "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": 166,
      "start_date": "2021-11-02",
      "completion_date": "2022-02-22",
      "has_results": true,
      "last_update_posted_date": "2023-03-16",
      "last_synced_at": "2026-09-22T22:56:13.119Z",
      "location_count": 10,
      "location_summary": "Oakland, California • San Francisco, California • Longwood, Florida + 7 more",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Longwood",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Warwick",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05050578"
    },
    {
      "nct_id": "NCT03322423",
      "title": "Evaluation of Two Marketed Multifocal Contact Lenses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Visual Performance"
      ],
      "interventions": [
        {
          "name": "Multifocal Contact Lens 1",
          "type": "DEVICE"
        },
        {
          "name": "Multifocal Contact Lens 2",
          "type": "DEVICE"
        },
        {
          "name": "Spherical Contact Lens 2",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Johnson & Johnson Vision Care, Inc.",
      "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": 78,
      "start_date": "2017-09-11",
      "completion_date": "2017-11-04",
      "has_results": true,
      "last_update_posted_date": "2019-01-08",
      "last_synced_at": "2026-09-22T22:56:13.119Z",
      "location_count": 5,
      "location_summary": "Sarasota, Florida • Albuquerque, New Mexico • Vestal, New York + 2 more",
      "locations": [
        {
          "city": "Sarasota",
          "state": "Florida"
        },
        {
          "city": "Albuquerque",
          "state": "New Mexico"
        },
        {
          "city": "Vestal",
          "state": "New York"
        },
        {
          "city": "Warwick",
          "state": "Rhode Island"
        },
        {
          "city": "Salem",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03322423"
    },
    {
      "nct_id": "NCT05114564",
      "title": "Evaluation of the Performance of Monthly Replacement Sphere Lens Designs in Habitual Soft Contact Lens Wearers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Myopia",
        "Hyperopia"
      ],
      "interventions": [
        {
          "name": "Lens A (comfilcon A lens)",
          "type": "DEVICE"
        },
        {
          "name": "Lens B (lehfilcon A lens)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "CooperVision, 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": 66,
      "start_date": "2021-11-19",
      "completion_date": "2022-04-22",
      "has_results": true,
      "last_update_posted_date": "2023-04-04",
      "last_synced_at": "2026-09-22T22:56:13.119Z",
      "location_count": 4,
      "location_summary": "Medina, Minnesota • Vestal, New York • Athens, Ohio + 1 more",
      "locations": [
        {
          "city": "Medina",
          "state": "Minnesota"
        },
        {
          "city": "Vestal",
          "state": "New York"
        },
        {
          "city": "Athens",
          "state": "Ohio"
        },
        {
          "city": "Granville",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05114564"
    },
    {
      "nct_id": "NCT01990664",
      "title": "Clinical Evaluation of Lapsed Contact Lens Wearers Who Are Re-fit Into Senofilcon A Contact Lenses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Lapsed Contact Lens Wear"
      ],
      "interventions": [
        {
          "name": "senofilcon A",
          "type": "DEVICE"
        },
        {
          "name": "senofilcon A for Astigmatism",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Johnson & Johnson Vision Care, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 199,
      "start_date": "2013-11",
      "completion_date": "2014-04",
      "has_results": true,
      "last_update_posted_date": "2018-06-19",
      "last_synced_at": "2026-09-22T22:56:13.119Z",
      "location_count": 10,
      "location_summary": "Jacksonville, Florida • Saint Augustine, Florida • Sarasota, Florida + 7 more",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Saint Augustine",
          "state": "Florida"
        },
        {
          "city": "Sarasota",
          "state": "Florida"
        },
        {
          "city": "Roswell",
          "state": "Georgia"
        },
        {
          "city": "Bloomington",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01990664"
    },
    {
      "nct_id": "NCT05183022",
      "title": "Total30 Sphere Contact Lenses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Contact Lens Complication",
        "Dry Eye"
      ],
      "interventions": [
        {
          "name": "Total30 Sphere Contact Lenses",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 48,
      "start_date": "2022-01-03",
      "completion_date": "2022-07-20",
      "has_results": true,
      "last_update_posted_date": "2022-12-16",
      "last_synced_at": "2026-09-22T22:56:13.119Z",
      "location_count": 2,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05183022"
    },
    {
      "nct_id": "NCT04772560",
      "title": "Toric Contact Lens Digital Performance and Comfort Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Astigmatism"
      ],
      "interventions": [
        {
          "name": "Precision1 for Astigmatism",
          "type": "DEVICE"
        },
        {
          "name": "Precision1 Sphere",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Kathryn Richdale",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "39 Years",
        "sex": "ALL",
        "summary": "18 Years to 39 Years"
      },
      "enrollment_count": 30,
      "start_date": "2021-03-16",
      "completion_date": "2021-12-13",
      "has_results": true,
      "last_update_posted_date": "2022-03-10",
      "last_synced_at": "2026-09-22T22:56:13.119Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04772560"
    }
  ]
}