{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractive+Errors&page=8",
    "query": {
      "condition": "Refractive Errors",
      "page": 8
    },
    "page_size": 10
  },
  "pagination": {
    "page": 8,
    "page_size": 10,
    "total_count": 634,
    "total_pages": 64,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractive+Errors&page=9&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractive+Errors&page=7&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-20T01:11:39.041Z",
  "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": "NCT04327518",
      "title": "Evaluation of the Rotational Stability of the Tecnis Toric II IOL",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cataract",
        "Corneal Astigmatism"
      ],
      "interventions": [
        {
          "name": "TECNIS® Toric II",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Johnson & Johnson Surgical Vision, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 125,
      "start_date": "2020-06-11",
      "completion_date": "2021-06-01",
      "has_results": true,
      "last_update_posted_date": "2022-06-01",
      "last_synced_at": "2026-10-20T01:11:39.041Z",
      "location_count": 7,
      "location_summary": "Bakersfield, California • Los Angeles, California • Sioux City, Iowa + 4 more",
      "locations": [
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sioux City",
          "state": "Iowa"
        },
        {
          "city": "West Fargo",
          "state": "North Dakota"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04327518"
    },
    {
      "nct_id": "NCT04208750",
      "title": "Clinical Investigation of the Vision-R800 Device.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Myopia",
        "Hyperopia",
        "Astigmatism",
        "Presbyopia"
      ],
      "interventions": [
        {
          "name": "Vision R-800 Phoropter",
          "type": "DEVICE"
        },
        {
          "name": "Standard Phoropter",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Pete Kollbaum, OD, PhD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 119,
      "start_date": "2019-11-18",
      "completion_date": "2021-02-01",
      "has_results": true,
      "last_update_posted_date": "2022-03-14",
      "last_synced_at": "2026-10-20T01:11:39.041Z",
      "location_count": 1,
      "location_summary": "Bloomington, Indiana",
      "locations": [
        {
          "city": "Bloomington",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04208750"
    },
    {
      "nct_id": "NCT07790185",
      "title": "Evaluation of Mesopic Visual Acuity and Patient Satisfaction Following Ray-Tracing-Guided LASIK",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Astigmatism",
        "Myopia"
      ],
      "interventions": [
        {
          "name": "Wavelight Plus",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Vance Thompson Vision",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 50,
      "start_date": "2026-04-20",
      "completion_date": "2027-11",
      "has_results": false,
      "last_update_posted_date": "2026-08-27",
      "last_synced_at": "2026-10-20T01:11:39.041Z",
      "location_count": 1,
      "location_summary": "Sioux Falls, South Dakota",
      "locations": [
        {
          "city": "Sioux Falls",
          "state": "South Dakota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07790185"
    },
    {
      "nct_id": "NCT01059019",
      "title": "Epithelial Healing and Visual Outcomes Using Omega-3 Therapy Before and After Photorefractive Keratectomy (PRK) Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Refractive Error"
      ],
      "interventions": [
        {
          "name": "Omega-3 Fatty Acid Supplements",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "28 Years",
        "sex": "ALL",
        "summary": "18 Years to 28 Years"
      },
      "enrollment_count": 17,
      "start_date": "2010-01",
      "completion_date": "2011-05",
      "has_results": false,
      "last_update_posted_date": "2013-06-21",
      "last_synced_at": "2026-10-20T01:11:39.041Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01059019"
    },
    {
      "nct_id": "NCT01028378",
      "title": "Safety and Efficacy Study of Topography-Guided LASIK to Treat Myopia and Hyperopia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Myopia",
        "Hyperopia"
      ],
      "interventions": [
        {
          "name": "T-CAT topography-guided LASIK treatment with the Allegretto Wave Eye-Q 400 Hz Excimer Laser",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Clinical Research Consultants, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 212,
      "start_date": "2009-10",
      "completion_date": null,
      "has_results": true,
      "last_update_posted_date": "2016-04-11",
      "last_synced_at": "2026-10-20T01:11:39.041Z",
      "location_count": 10,
      "location_summary": "La Quinta, California • San Diego, California • Atlanta, Georgia + 5 more",
      "locations": [
        {
          "city": "La Quinta",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Peoria",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01028378"
    },
    {
      "nct_id": "NCT04437732",
      "title": "Apioc Presbyopic Contact Lens",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Presbyopia",
        "Refractive Errors"
      ],
      "interventions": [
        {
          "name": "Apioc-P and Apioc-PT Contact Lens Design",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Lentechs, LLC",
      "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": 49,
      "start_date": "2019-11-11",
      "completion_date": "2021-06-09",
      "has_results": false,
      "last_update_posted_date": "2022-01-19",
      "last_synced_at": "2026-10-20T01:11:39.041Z",
      "location_count": 2,
      "location_summary": "Athens, Ohio • Powell, Ohio",
      "locations": [
        {
          "city": "Athens",
          "state": "Ohio"
        },
        {
          "city": "Powell",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04437732"
    },
    {
      "nct_id": "NCT03544216",
      "title": "Accommodative Relief for Uncomfortable Non-Presbyopes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Asthenopia"
      ],
      "interventions": [
        {
          "name": "Multifocal Contact Lens",
          "type": "DEVICE"
        },
        {
          "name": "Single Vision Contact Lens",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "30 Years to 40 Years"
      },
      "enrollment_count": 84,
      "start_date": "2017-02-02",
      "completion_date": "2018-05-06",
      "has_results": true,
      "last_update_posted_date": "2019-02-15",
      "last_synced_at": "2026-10-20T01:11:39.041Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03544216"
    },
    {
      "nct_id": "NCT03610997",
      "title": "Photorefractive Keratectomy for Severe Anisometropia and Isoametropia Associated With Amblyopia",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Anisometropia",
        "Hyperopia",
        "High Myopia",
        "Amblyopia Isometropic",
        "Amblyopia Bilateral",
        "High Astigmatism"
      ],
      "interventions": [
        {
          "name": "Photorefractive keratectomy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "2 Years to 17 Years"
      },
      "enrollment_count": 200,
      "start_date": "2001-01-01",
      "completion_date": "2024-09-01",
      "has_results": false,
      "last_update_posted_date": "2025-12-08",
      "last_synced_at": "2026-10-20T01:11:39.041Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03610997"
    },
    {
      "nct_id": "NCT05250986",
      "title": "Comparison of Visual Acuity Performed in Office Versus In Residence",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Refractive Errors"
      ],
      "interventions": [
        {
          "name": "GoCheck Kids (iOS)",
          "type": "DEVICE"
        },
        {
          "name": "GoCheck Kids (Windows)",
          "type": "DEVICE"
        },
        {
          "name": "GoCheck at Home (iOS)",
          "type": "DEVICE"
        },
        {
          "name": "GoCheck at Home (Windows)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Gobiquity Mobile Health",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "4 Years to 20 Years"
      },
      "enrollment_count": 325,
      "start_date": "2022-02-14",
      "completion_date": "2022-09-01",
      "has_results": false,
      "last_update_posted_date": "2022-02-22",
      "last_synced_at": "2026-10-20T01:11:39.041Z",
      "location_count": 3,
      "location_summary": "Anchorage, Alaska • New Haven, Connecticut • Charleston, South Carolina",
      "locations": [
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05250986"
    },
    {
      "nct_id": "NCT04676451",
      "title": "Femtosecond Laser Assisted Keratotomies for the Management of Corneal Astigmatism",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Astigmatism",
        "Cataract"
      ],
      "interventions": [
        {
          "name": "Femto-AK",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Milton S. Hershey 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": 94,
      "start_date": "2018-05-14",
      "completion_date": "2024-03-22",
      "has_results": true,
      "last_update_posted_date": "2025-05-13",
      "last_synced_at": "2026-10-20T01:11:39.041Z",
      "location_count": 1,
      "location_summary": "Hershey, Pennsylvania",
      "locations": [
        {
          "city": "Hershey",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04676451"
    }
  ]
}