{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Progressive+Addition+Lenses+%28PALs%29",
    "query": {
      "intervention": "Progressive Addition Lenses (PALs)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 3,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-24T07:47:30.529Z",
  "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": "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": "2026-09-24T07:47:30.529Z",
      "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": "NCT00320593",
      "title": "Correction of Myopia Evaluation Trial 2",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "Progressive Addition Lenses (PALs)",
          "type": "DEVICE"
        },
        {
          "name": "Single Vision Lenses (SVLs)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Jaeb Center for Health Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "8 Years to 11 Years"
      },
      "enrollment_count": 118,
      "start_date": "2005-04",
      "completion_date": "2010-03",
      "has_results": true,
      "last_update_posted_date": "2026-07-09",
      "last_synced_at": "2026-09-24T07:47:30.529Z",
      "location_count": 8,
      "location_summary": "Birmingham, Alabama • Fullerton, California • Bloomington, Indiana + 5 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "Bloomington",
          "state": "Indiana"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00320593"
    },
    {
      "nct_id": "NCT00335049",
      "title": "Study of Theories About Myopia Progression (STAMP)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Myopia"
      ],
      "interventions": [
        {
          "name": "progressive addition spectacle lens (bifocal)",
          "type": "DEVICE"
        },
        {
          "name": "Single Vision Lenses (SVLs)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "6 Years to 11 Years"
      },
      "enrollment_count": 85,
      "start_date": "2006-12",
      "completion_date": "2010-07",
      "has_results": false,
      "last_update_posted_date": "2022-10-28",
      "last_synced_at": "2026-09-24T07:47:30.529Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00335049"
    }
  ]
}