{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Spherical+contact+lenses&page=4",
    "query": {
      "intervention": "Spherical contact lenses",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 77,
    "total_pages": 8,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Spherical+contact+lenses&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Spherical+contact+lenses&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-07T19:55:11.433Z",
  "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": "2026-10-07T19:55:11.433Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03705130"
    },
    {
      "nct_id": "NCT04535310",
      "title": "Wear Experience With Daily Contact Lenses Over a Long Day",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Contact Lens"
      ],
      "interventions": [
        {
          "name": "Precision1® Daily Disposable Contact Lens",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Ohio State University",
      "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": 35,
      "start_date": "2020-10-13",
      "completion_date": "2021-03-31",
      "has_results": true,
      "last_update_posted_date": "2023-02-08",
      "last_synced_at": "2026-10-07T19:55:11.433Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04535310"
    },
    {
      "nct_id": "NCT06009458",
      "title": "Acuity 200™ (Fluoroxyfocon A) Orthokeratology Contact Lens for Overnight Wear",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "Acuity 200™ (fluoroxyfocon A) Orthokeratology Contact Lens for Overnight Wear",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Acuity Polymers, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "7 Years and older"
      },
      "enrollment_count": 387,
      "start_date": "2023-10-01",
      "completion_date": "2025-09",
      "has_results": false,
      "last_update_posted_date": "2025-01-14",
      "last_synced_at": "2026-10-07T19:55:11.433Z",
      "location_count": 9,
      "location_summary": "Mission Viejo, California • Oakland, California • San Francisco, California + 6 more",
      "locations": [
        {
          "city": "Mission Viejo",
          "state": "California"
        },
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Sunnyvale",
          "state": "California"
        },
        {
          "city": "Ocoee",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06009458"
    },
    {
      "nct_id": "NCT04840563",
      "title": "Surface Refractive Index Shift of Kalifilcon A Compared With Dailies Total1 and Precision1 Lenses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Contact Lens Wear"
      ],
      "interventions": [
        {
          "name": "kalifilcon A daily disposable spherical soft contact lens",
          "type": "DEVICE"
        },
        {
          "name": "Dailies Total1 (delefilcon A) daily disposable spherical soft contact lens",
          "type": "DEVICE"
        },
        {
          "name": "Precision1 (verofilcon A) daily disposable spherical soft contact lens",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Bausch & Lomb Incorporated",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2021-04-07",
      "completion_date": "2021-04-15",
      "has_results": true,
      "last_update_posted_date": "2026-08-05",
      "last_synced_at": "2026-10-07T19:55:11.433Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04840563"
    },
    {
      "nct_id": "NCT05239494",
      "title": "Dailies Total 1 Sphere Contact Lenses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dry Eye",
        "Contact Lens Complication"
      ],
      "interventions": [
        {
          "name": "DT1 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": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 60,
      "start_date": "2022-05-23",
      "completion_date": "2023-08-30",
      "has_results": true,
      "last_update_posted_date": "2024-10-01",
      "last_synced_at": "2026-10-07T19:55:11.433Z",
      "location_count": 4,
      "location_summary": "Birmingham, Alabama • Pittsburg, Kansas • Granville, Ohio + 1 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Pittsburg",
          "state": "Kansas"
        },
        {
          "city": "Granville",
          "state": "Ohio"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05239494"
    },
    {
      "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": "2026-10-07T19:55:11.433Z",
      "location_count": 1,
      "location_summary": "Memphis, Tennessee",
      "locations": [
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06847230"
    },
    {
      "nct_id": "NCT03496701",
      "title": "Performance of Wearers of Stenfilcon A Contact Lenses After A Refit With Test Lenses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "Test lens",
          "type": "DEVICE"
        },
        {
          "name": "control lens",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "CooperVision, Inc.",
      "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": 77,
      "start_date": "2018-04-18",
      "completion_date": "2019-01-17",
      "has_results": true,
      "last_update_posted_date": "2021-06-30",
      "last_synced_at": "2026-10-07T19:55:11.433Z",
      "location_count": 4,
      "location_summary": "San Diego, California • Whittier, California • Sarasota, Florida + 1 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Whittier",
          "state": "California"
        },
        {
          "city": "Sarasota",
          "state": "Florida"
        },
        {
          "city": "State College",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03496701"
    },
    {
      "nct_id": "NCT06044948",
      "title": "Clinical Assessment of a Daily Disposable Soft Silicone Hydrogel Contact Lens",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Refractive Errors"
      ],
      "interventions": [
        {
          "name": "Delefilcon A contact lenses",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Alcon Research",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 97,
      "start_date": "2023-10-13",
      "completion_date": "2023-11-08",
      "has_results": true,
      "last_update_posted_date": "2024-11-20",
      "last_synced_at": "2026-10-07T19:55:11.433Z",
      "location_count": 6,
      "location_summary": "Tallahassee, Florida • Eden Prairie, Minnesota • Garner, North Carolina + 3 more",
      "locations": [
        {
          "city": "Tallahassee",
          "state": "Florida"
        },
        {
          "city": "Eden Prairie",
          "state": "Minnesota"
        },
        {
          "city": "Garner",
          "state": "North Carolina"
        },
        {
          "city": "Granville",
          "state": "Ohio"
        },
        {
          "city": "Wyomissing",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06044948"
    },
    {
      "nct_id": "NCT05438615",
      "title": "Corneal Refractive Therapy Design Comparison for -4 to -6 Diopter Treatment for Overnight Wear for Myopia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "Corneal Refractive Therapy-spherical",
          "type": "OTHER"
        },
        {
          "name": "Corneal Refractive Therapy-aspherical",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "CooperVision International Limited (CVIL)",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2015-12",
      "completion_date": "2016-10-27",
      "has_results": false,
      "last_update_posted_date": "2026-01-20",
      "last_synced_at": "2026-10-07T19:55:11.433Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05438615"
    },
    {
      "nct_id": "NCT03581825",
      "title": "Clinical Evaluation of a Reusable Multifocal Optical Design in a Presbyopic Population",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Visual Acuity"
      ],
      "interventions": [
        {
          "name": "senofilcon A Multifocal",
          "type": "DEVICE"
        },
        {
          "name": "senofilcon A Sphere",
          "type": "DEVICE"
        },
        {
          "name": "etafilcon A Multifocal",
          "type": "DEVICE"
        },
        {
          "name": "etafilcon A Sphere",
          "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": 63,
      "start_date": "2018-06-08",
      "completion_date": "2018-08-20",
      "has_results": true,
      "last_update_posted_date": "2020-05-08",
      "last_synced_at": "2026-10-07T19:55:11.433Z",
      "location_count": 6,
      "location_summary": "Orlando, Florida • East Lansing, Michigan • Raytown, Missouri + 3 more",
      "locations": [
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "East Lansing",
          "state": "Michigan"
        },
        {
          "city": "Raytown",
          "state": "Missouri"
        },
        {
          "city": "Jamestown",
          "state": "New York"
        },
        {
          "city": "Vestal",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03581825"
    }
  ]
}