{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractive+Errors&page=9",
    "query": {
      "condition": "Refractive Errors",
      "page": 9
    },
    "page_size": 10
  },
  "pagination": {
    "page": 9,
    "page_size": 10,
    "total_count": 634,
    "total_pages": 64,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractive+Errors&page=10&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractive+Errors&page=8&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-20T07:18:47.081Z",
  "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": "NCT01058629",
      "title": "Study to Evaluate the Clinical Performance of SynergEyes A2 Hybrid Contact Lenses",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Refractive Errors",
        "Astigmatism"
      ],
      "interventions": [
        {
          "name": "SynergEyes A2 Hybrid Contact Lens",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "SynergEyes, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 125,
      "start_date": "2009-08",
      "completion_date": "2010-09",
      "has_results": false,
      "last_update_posted_date": "2010-08-25",
      "last_synced_at": "2026-10-20T07:18:47.081Z",
      "location_count": 10,
      "location_summary": "Campbell, California • Carlsbad, California • Encino, California + 7 more",
      "locations": [
        {
          "city": "Campbell",
          "state": "California"
        },
        {
          "city": "Carlsbad",
          "state": "California"
        },
        {
          "city": "Encino",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "East Lansing",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01058629"
    },
    {
      "nct_id": "NCT02060539",
      "title": "Multicenter Dispensing Study of Biofinity Lenses in Extended Range",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Myopia",
        "Hyperopia"
      ],
      "interventions": [
        {
          "name": "Biofinity XR",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "CooperVision, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 19,
      "start_date": "2013-10",
      "completion_date": "2014-12",
      "has_results": true,
      "last_update_posted_date": "2017-12-11",
      "last_synced_at": "2026-10-20T07:18:47.081Z",
      "location_count": 3,
      "location_summary": "Berkeley, California • Indianapolis, Indiana • Houston, Texas",
      "locations": [
        {
          "city": "Berkeley",
          "state": "California"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02060539"
    },
    {
      "nct_id": "NCT02185105",
      "title": "Clinical Validation of Biofinity Toric MTO (Made To Order) Lenses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Myopia",
        "Astigmatism"
      ],
      "interventions": [
        {
          "name": "comfilcon A MTO",
          "type": "DEVICE"
        },
        {
          "name": "comfilcon A",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "CooperVision, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2014-06",
      "completion_date": "2014-06",
      "has_results": true,
      "last_update_posted_date": "2017-03-07",
      "last_synced_at": "2026-10-20T07:18:47.081Z",
      "location_count": 1,
      "location_summary": "Bloomington, Indiana",
      "locations": [
        {
          "city": "Bloomington",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02185105"
    },
    {
      "nct_id": "NCT02097030",
      "title": "Clinical Evaluation of Daily Disposable Contact Lenses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "filcon II 3",
          "type": "DEVICE"
        },
        {
          "name": "etafilcon A",
          "type": "DEVICE"
        },
        {
          "name": "nelfilcon A",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "CooperVision, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 35,
      "start_date": "2014-03",
      "completion_date": "2014-04",
      "has_results": true,
      "last_update_posted_date": "2020-07-31",
      "last_synced_at": "2026-10-20T07:18:47.081Z",
      "location_count": 1,
      "location_summary": "Berkeley, California",
      "locations": [
        {
          "city": "Berkeley",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02097030"
    },
    {
      "nct_id": "NCT01151371",
      "title": "Clinical Evaluation Of Two Daily Disposable Contact Lenses And A Monthly Replacement Lens",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "narafilcon B contact lens",
          "type": "DEVICE"
        },
        {
          "name": "nelfilcon A contact lens",
          "type": "DEVICE"
        },
        {
          "name": "lotrafilcon B contact lens",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Johnson & Johnson Vision Care, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "39 Years",
        "sex": "ALL",
        "summary": "18 Years to 39 Years"
      },
      "enrollment_count": 452,
      "start_date": "2010-02-01",
      "completion_date": "2010-04-01",
      "has_results": true,
      "last_update_posted_date": "2018-06-19",
      "last_synced_at": "2026-10-20T07:18:47.081Z",
      "location_count": 28,
      "location_summary": "Brea, California • Canoga Park, California • Corona, California + 23 more",
      "locations": [
        {
          "city": "Brea",
          "state": "California"
        },
        {
          "city": "Canoga Park",
          "state": "California"
        },
        {
          "city": "Corona",
          "state": "California"
        },
        {
          "city": "Bridgeport",
          "state": "Connecticut"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01151371"
    },
    {
      "nct_id": "NCT01592643",
      "title": "Post Photorefractive Keratectomy (PRK) Use of an Eye Shield for Maintaining Vision and Mitigating Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pain",
        "Vision Nearsighted"
      ],
      "interventions": [
        {
          "name": "Eye Shield",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2012-03-01",
      "completion_date": "2013-10-31",
      "has_results": true,
      "last_update_posted_date": "2021-12-22",
      "last_synced_at": "2026-10-20T07:18:47.081Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01592643"
    },
    {
      "nct_id": "NCT00000113",
      "title": "Correction of Myopia Evaluation Trial (COMET)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "Progressive Addition Lenses",
          "type": "OTHER"
        },
        {
          "name": "single vision lenses",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Stony Brook University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "6 Years to 12 Years"
      },
      "enrollment_count": 469,
      "start_date": "1997-09",
      "completion_date": "2013-09",
      "has_results": false,
      "last_update_posted_date": "2016-04-15",
      "last_synced_at": "2026-10-20T07:18:47.081Z",
      "location_count": 4,
      "location_summary": "Birmingham, Alabama • Boston, Massachusetts • Philadelphia, Pennsylvania + 1 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00000113"
    },
    {
      "nct_id": "NCT04698590",
      "title": "Wavefront Guided Scleral Lenses for Keratoconus and Irregular Astigmatism",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Keratoconus",
        "Irregular Astigmatism",
        "Corneal Ectasia",
        "Aberration, Corneal Wavefront",
        "Wavefront Aberration, Corneal",
        "Pellucid Marginal Corneal Degeneration",
        "Keratoglobus"
      ],
      "interventions": [
        {
          "name": "Wavefront Guided Scleral Lenses",
          "type": "DEVICE"
        },
        {
          "name": "Traditional Scleral Lenses",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Cornea and Laser Eye Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2021-01-15",
      "completion_date": "2025-12-31",
      "has_results": false,
      "last_update_posted_date": "2024-05-03",
      "last_synced_at": "2026-10-20T07:18:47.081Z",
      "location_count": 1,
      "location_summary": "Teaneck, New Jersey",
      "locations": [
        {
          "city": "Teaneck",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04698590"
    },
    {
      "nct_id": "NCT00272376",
      "title": "Clinical and Genetic Studies in Families With Myopia and Related Diseases",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Myopia"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Eye Institute (NEI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "4 Years and older"
      },
      "enrollment_count": 851,
      "start_date": "2005-12-21",
      "completion_date": "2016-07-29",
      "has_results": false,
      "last_update_posted_date": "2019-12-12",
      "last_synced_at": "2026-10-20T07:18:47.081Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00272376"
    },
    {
      "nct_id": "NCT01279031",
      "title": "Randomized Comparison of the Abbott WHITESTAR Signature System With Ellips Tranversal Ultrasound vs. the Alcon Infiniti With the Ozil Torsional Handpiece in Phacoemulsification: A Contralaterally-Controlled Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Cataracts",
        "Astigmatism"
      ],
      "interventions": [
        {
          "name": "Abbott WHITESTAR Signature System with Ellips Transversal Ultrasound",
          "type": "DEVICE"
        },
        {
          "name": "Alcon Infiniti wiht the OZIL Torsional Handpiece",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Innovative Medical",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 25,
      "start_date": "2011-10",
      "completion_date": "2012-01",
      "has_results": false,
      "last_update_posted_date": "2012-01-18",
      "last_synced_at": "2026-10-20T07:18:47.081Z",
      "location_count": 1,
      "location_summary": "Beverly Hills, California",
      "locations": [
        {
          "city": "Beverly Hills",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01279031"
    }
  ]
}