{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Single+vision+contact+lenses&page=2",
    "query": {
      "intervention": "Single vision contact lenses",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 39,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Single+vision+contact+lenses&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Single+vision+contact+lenses&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-07T03:11:17.195Z",
  "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": "NCT06335212",
      "title": "Peripheral Defocus Profile of Multifocal Minus Contact Lenses",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Myopia",
        "Refractive Errors",
        "Contact Lens"
      ],
      "interventions": [
        {
          "name": "Single vision and multifocal contact lenses",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "State University of New York College of Optometry",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "18 Years to 30 Years"
      },
      "enrollment_count": 19,
      "start_date": "2019-06-01",
      "completion_date": "2019-08-05",
      "has_results": false,
      "last_update_posted_date": "2024-03-28",
      "last_synced_at": "2026-10-07T03:11:17.195Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06335212"
    },
    {
      "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": "2026-10-07T03:11:17.195Z",
      "location_count": 1,
      "location_summary": "San Bruno, California",
      "locations": [
        {
          "city": "San Bruno",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00950924"
    },
    {
      "nct_id": "NCT04178720",
      "title": "Clinical Evaluation of a Daily Wear Monthly Replacement Silicone Hydrogel Lens",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Refractive Errors"
      ],
      "interventions": [
        {
          "name": "Lehfilcon A contact lenses",
          "type": "DEVICE"
        },
        {
          "name": "Comfilcon 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": 119,
      "start_date": "2020-01-28",
      "completion_date": "2020-06-10",
      "has_results": true,
      "last_update_posted_date": "2021-10-19",
      "last_synced_at": "2026-10-07T03:11:17.195Z",
      "location_count": 8,
      "location_summary": "Longwood, Florida • Maitland, Florida • Orlando, Florida + 4 more",
      "locations": [
        {
          "city": "Longwood",
          "state": "Florida"
        },
        {
          "city": "Maitland",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Bloomington",
          "state": "Illinois"
        },
        {
          "city": "Medina",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04178720"
    },
    {
      "nct_id": "NCT06598423",
      "title": "Wavelength Intervention for Nearsighted Kids",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "Specialized soft contact lens 1",
          "type": "DEVICE"
        },
        {
          "name": "Specialized soft contact lens 2",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "7 Years to 12 Years"
      },
      "enrollment_count": 80,
      "start_date": "2025-04-10",
      "completion_date": "2027-07-31",
      "has_results": false,
      "last_update_posted_date": "2025-10-08",
      "last_synced_at": "2026-10-07T03:11:17.195Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06598423"
    },
    {
      "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": "2026-10-07T03:11:17.195Z",
      "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": "NCT02180347",
      "title": "Contact Lenses and Myopia",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "Contact lenses",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "State University of New York College of Optometry",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "15 Years",
        "sex": "ALL",
        "summary": "7 Years to 15 Years"
      },
      "enrollment_count": 17,
      "start_date": "2014-06",
      "completion_date": "2016-05",
      "has_results": false,
      "last_update_posted_date": "2016-07-12",
      "last_synced_at": "2026-10-07T03:11:17.195Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02180347"
    },
    {
      "nct_id": "NCT07218731",
      "title": "Presbyopic Wear Experience With Multifocal Lenses Compared to Single Vision Lenses and Reading Glasses",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Presbyopia Correction",
        "Presbyopia"
      ],
      "interventions": [
        {
          "name": "Multifocal contact lenses",
          "type": "DEVICE"
        },
        {
          "name": "Spherical contact lenses",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2025-12-08",
      "completion_date": "2026-10",
      "has_results": false,
      "last_update_posted_date": "2026-09-24",
      "last_synced_at": "2026-10-07T03:11:17.195Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07218731"
    },
    {
      "nct_id": "NCT03920280",
      "title": "Clinical Evaluation of a Daily Wear Frequent Replacement Silicone Hydrogel Lens",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Refractive Errors"
      ],
      "interventions": [
        {
          "name": "LID015385 contact lenses",
          "type": "DEVICE"
        },
        {
          "name": "Comfilcon A soft 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": 120,
      "start_date": "2019-05-22",
      "completion_date": "2019-10-05",
      "has_results": true,
      "last_update_posted_date": "2022-07-28",
      "last_synced_at": "2026-10-07T03:11:17.195Z",
      "location_count": 8,
      "location_summary": "Maitland, Florida • Orlando, Florida • Pensacola, Florida + 5 more",
      "locations": [
        {
          "city": "Maitland",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Pensacola",
          "state": "Florida"
        },
        {
          "city": "Bloomington",
          "state": "Illinois"
        },
        {
          "city": "Pittsburg",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03920280"
    },
    {
      "nct_id": "NCT05028790",
      "title": "Evaluating Contact Lens Optics",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "Single vision contact lens",
          "type": "DEVICE"
        },
        {
          "name": "Multifocal contact lens",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "David A Berntsen, OD PhD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "39 Years",
        "sex": "ALL",
        "summary": "18 Years to 39 Years"
      },
      "enrollment_count": 16,
      "start_date": "2022-02-27",
      "completion_date": "2022-12-13",
      "has_results": true,
      "last_update_posted_date": "2024-02-06",
      "last_synced_at": "2026-10-07T03:11:17.195Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05028790"
    },
    {
      "nct_id": "NCT04838223",
      "title": "Neurosensory Abnormalities in SymptomAtic Ocular Surface Patients (NASA)",
      "overall_status": "SUSPENDED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Dry Eye",
        "Neuropathic Pain"
      ],
      "interventions": [
        {
          "name": "Hyperosmolar Response",
          "type": "OTHER"
        },
        {
          "name": "Proparacaine Challenge Test",
          "type": "OTHER"
        },
        {
          "name": "Contact Lens Dry Eye Questionnaire-8 (CLDEQ-8) Optional; only for Contact Lens Wearers",
          "type": "OTHER"
        },
        {
          "name": "Ocular Pain Assessment Survey (OPAS)",
          "type": "OTHER"
        },
        {
          "name": "Visual Analogue Questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Tufts Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1000,
      "start_date": "2021-07-02",
      "completion_date": "2026-07",
      "has_results": false,
      "last_update_posted_date": "2026-01-27",
      "last_synced_at": "2026-10-07T03:11:17.195Z",
      "location_count": 16,
      "location_summary": "Azusa, California • Pomona, California • San Francisco, California + 10 more",
      "locations": [
        {
          "city": "Azusa",
          "state": "California"
        },
        {
          "city": "Pomona",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04838223"
    }
  ]
}