{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractive+Error",
    "query": {
      "condition": "Refractive Error"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 617,
    "total_pages": 62,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractive+Error&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-10T08:55:14.496Z",
  "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": "NCT04693247",
      "title": "Handheld Device Compared With a Standard Eye Care Diagnostic Device in Measuring Ophthalmic Refraction",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Refractive Errors",
        "Vision Disorders"
      ],
      "interventions": [
        {
          "name": "EQ103",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "EyeQue Corp.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 35,
      "start_date": "2020-10-28",
      "completion_date": "2023-06-21",
      "has_results": false,
      "last_update_posted_date": "2022-08-22",
      "last_synced_at": "2026-06-10T08:55:14.496Z",
      "location_count": 1,
      "location_summary": "Newark, California",
      "locations": [
        {
          "city": "Newark",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04693247"
    },
    {
      "nct_id": "NCT05495971",
      "title": "Extended Depth of Focus Contact Lenses for Presbyopia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Presbyopia"
      ],
      "interventions": [
        {
          "name": "NaturalVue Multifocal",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Visioneering Technologies, Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "45 Years to 70 Years"
      },
      "enrollment_count": 24,
      "start_date": "2022-09-06",
      "completion_date": "2023-05-12",
      "has_results": true,
      "last_update_posted_date": "2024-12-16",
      "last_synced_at": "2026-06-10T08:55:14.496Z",
      "location_count": 1,
      "location_summary": "Alpharetta, Georgia",
      "locations": [
        {
          "city": "Alpharetta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05495971"
    },
    {
      "nct_id": "NCT01193231",
      "title": "A 6 Month Study to Evaluate the Safety, Analgesic Efficacy of ACUVAIL™ (Ketorolac Tromethamine Ophthalmic Solution) 0.45%, in Post-PRK Corneal Wound Healing",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Must be PRK Candidate"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Durrie Vision",
      "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": 10,
      "start_date": "2010-08",
      "completion_date": "2011-04",
      "has_results": false,
      "last_update_posted_date": "2012-02-14",
      "last_synced_at": "2026-06-10T08:55:14.496Z",
      "location_count": 1,
      "location_summary": "Overland Park, Kansas",
      "locations": [
        {
          "city": "Overland Park",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01193231"
    },
    {
      "nct_id": "NCT05927753",
      "title": "Study to Evaluate the Clinical Performance of Deseyne (Vifilcon C) Daily Disposable Soft Contact Lens",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Refractive Error - Myopia Bilateral"
      ],
      "interventions": [
        {
          "name": "Deseyne Daily Disposable Contact Lens (Test Device)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Bruno Vision Care",
      "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": 81,
      "start_date": "2023-06-08",
      "completion_date": "2024-01-08",
      "has_results": true,
      "last_update_posted_date": "2025-10-02",
      "last_synced_at": "2026-06-10T08:55:14.496Z",
      "location_count": 3,
      "location_summary": "Longwood, Florida • Pittsburg, Kansas • Warwick, Rhode Island",
      "locations": [
        {
          "city": "Longwood",
          "state": "Florida"
        },
        {
          "city": "Pittsburg",
          "state": "Kansas"
        },
        {
          "city": "Warwick",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05927753"
    },
    {
      "nct_id": "NCT01735045",
      "title": "LSH Silicone Hydrogel Soft Hydrophilic Contact Lens for Daily Wear",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "Lagado LSH (mangofilcon A) Soft (hydrophilic) Contact Lens",
          "type": "DEVICE"
        },
        {
          "name": "Benz 3GX (hioxifilcon B) Soft (hydrophilic) Contact Lens",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Szabocsik and Associates, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 76,
      "start_date": "2010-05",
      "completion_date": "2012-01",
      "has_results": false,
      "last_update_posted_date": "2012-11-28",
      "last_synced_at": "2026-06-10T08:55:14.496Z",
      "location_count": 5,
      "location_summary": "Huntington Beach, California • Honolulu, Hawaii • Oak Lawn, Illinois + 2 more",
      "locations": [
        {
          "city": "Huntington Beach",
          "state": "California"
        },
        {
          "city": "Honolulu",
          "state": "Hawaii"
        },
        {
          "city": "Oak Lawn",
          "state": "Illinois"
        },
        {
          "city": "Concord",
          "state": "New Hampshire"
        },
        {
          "city": "Londonderry",
          "state": "New Hampshire"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01735045"
    },
    {
      "nct_id": "NCT03475875",
      "title": "Contact Lenses With New UV-blocker Manufactured With Different Techniques",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Correction of Refraction Error",
        "Attenuation of Bright Light"
      ],
      "interventions": [
        {
          "name": "senofilcon A TEST Lens",
          "type": "DEVICE"
        },
        {
          "name": "senofilcon A CONTROL 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": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 92,
      "start_date": "2018-02-19",
      "completion_date": "2018-04-18",
      "has_results": true,
      "last_update_posted_date": "2019-06-04",
      "last_synced_at": "2026-06-10T08:55:14.496Z",
      "location_count": 5,
      "location_summary": "Foster City, California • Jacksonville, Florida • Pickens, South Carolina + 2 more",
      "locations": [
        {
          "city": "Foster City",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Pickens",
          "state": "South Carolina"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03475875"
    },
    {
      "nct_id": "NCT01857102",
      "title": "Toric Eye Strain and Stability Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Astigmatism"
      ],
      "interventions": [
        {
          "name": "etafilcon A",
          "type": "DEVICE"
        },
        {
          "name": "etafilcon 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": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 159,
      "start_date": "2013-09",
      "completion_date": "2014-06",
      "has_results": true,
      "last_update_posted_date": "2018-06-19",
      "last_synced_at": "2026-06-10T08:55:14.496Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01857102"
    },
    {
      "nct_id": "NCT03888469",
      "title": "Clinical Comparison of DDT2 Contact Lens and a Daily Disposable Contact Lens - Study 1",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Refractive Error",
        "Myopia"
      ],
      "interventions": [
        {
          "name": "Verofilcon A contact lenses",
          "type": "DEVICE"
        },
        {
          "name": "Etafilcon A contact lenses",
          "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": 92,
      "start_date": "2019-05-03",
      "completion_date": "2019-06-24",
      "has_results": true,
      "last_update_posted_date": "2020-06-25",
      "last_synced_at": "2026-06-10T08:55:14.496Z",
      "location_count": 5,
      "location_summary": "Jacksonville, Florida • Maitland, Florida • Orlando, Florida + 2 more",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Maitland",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Powell",
          "state": "Ohio"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03888469"
    },
    {
      "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": "2026-06-10T08:55:14.496Z",
      "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": "NCT02341859",
      "title": "Lens Fitting Evaluation of CooperVision MyDay™ Compared With 1-DAY ACUVUE® TruEye® and DAILIES TOTAL1®",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "stenfilcon A",
          "type": "DEVICE"
        },
        {
          "name": "delefilcon A",
          "type": "DEVICE"
        },
        {
          "name": "narafilcon 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": 22,
      "start_date": "2015-01",
      "completion_date": "2015-07",
      "has_results": true,
      "last_update_posted_date": "2017-03-10",
      "last_synced_at": "2026-06-10T08:55:14.496Z",
      "location_count": 1,
      "location_summary": "Berkeley, California",
      "locations": [
        {
          "city": "Berkeley",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02341859"
    }
  ]
}