{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Optical+measurement&page=2",
    "query": {
      "intervention": "Optical measurement",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Optical+measurement&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-24T00:55:15.434Z",
  "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": "NCT03840161",
      "title": "Use of CoG by Patients With Diabetes Mellitus",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Diabetes Mellitus"
      ],
      "interventions": [
        {
          "name": "non-invasive tissue glucose prediction",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Sciema UG",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 40,
      "start_date": "2018-07-16",
      "completion_date": "2019-03-31",
      "has_results": false,
      "last_update_posted_date": "2020-01-18",
      "last_synced_at": "2026-09-24T00:55:15.434Z",
      "location_count": 1,
      "location_summary": "San Mateo, California",
      "locations": [
        {
          "city": "San Mateo",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03840161"
    },
    {
      "nct_id": "NCT01372631",
      "title": "A Novel Optical Spectral Imaging System for Imaging Breast Tumor Margins",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "miniature spectral imaging system",
          "type": "DEVICE"
        },
        {
          "name": "Bench-top optical spectrometer",
          "type": "DEVICE"
        },
        {
          "name": "High resolution microendoscope",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 218,
      "start_date": "2011-04",
      "completion_date": "2017-04-01",
      "has_results": false,
      "last_update_posted_date": "2021-02-10",
      "last_synced_at": "2026-09-24T00:55:15.434Z",
      "location_count": 2,
      "location_summary": "Durham, North Carolina • Madison, Wisconsin",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01372631"
    },
    {
      "nct_id": "NCT02925884",
      "title": "Effects of Gunnar Computer Glasses on Viewing Comfort and Performance",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dry Eye",
        "Eye Strain",
        "Visual Acuity",
        "Color Perception"
      ],
      "interventions": [
        {
          "name": "Gunnar OTC Glasses",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Pacific University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "42 Years",
        "sex": "ALL",
        "summary": "18 Years to 42 Years"
      },
      "enrollment_count": 35,
      "start_date": "2013-06",
      "completion_date": "2013-09",
      "has_results": true,
      "last_update_posted_date": "2025-07-16",
      "last_synced_at": "2026-09-24T00:55:15.434Z",
      "location_count": 1,
      "location_summary": "Forest Grove, Oregon",
      "locations": [
        {
          "city": "Forest Grove",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02925884"
    },
    {
      "nct_id": "NCT00502814",
      "title": "3-Dimensional Form and Soft Tissue Biomechanics of the Breast",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "3-D Optical Surface Scan",
          "type": "PROCEDURE"
        },
        {
          "name": "Mechanical Testing",
          "type": "PROCEDURE"
        },
        {
          "name": "Cutaneous Ultrasound",
          "type": "PROCEDURE"
        },
        {
          "name": "Breast MRI and/or CT",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 45,
      "start_date": "2003-01",
      "completion_date": "2011-10",
      "has_results": false,
      "last_update_posted_date": "2012-02-22",
      "last_synced_at": "2026-09-24T00:55:15.434Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00502814"
    },
    {
      "nct_id": "NCT06380179",
      "title": "Photomedicine Project 14: PBMT for Performance Enhancement in SOF",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Photobiomodulation Therapy",
        "Photomedicine",
        "Low-Level Laser Therapy",
        "Performance Enhancement",
        "Quadriceps",
        "Special Operations Readiness"
      ],
      "interventions": [
        {
          "name": "THOR3 training + Photobiomodulation Therapy (PBMT)",
          "type": "DEVICE"
        },
        {
          "name": "THOR3 training + sham PBMT",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Musculoskeletal Injury Rehabilitation Research for Operational Readiness",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "MALE",
        "summary": "18 Years to 45 Years · Male only"
      },
      "enrollment_count": 29,
      "start_date": "2025-01-23",
      "completion_date": "2026-03-02",
      "has_results": true,
      "last_update_posted_date": "2026-06-15",
      "last_synced_at": "2026-09-24T00:55:15.434Z",
      "location_count": 1,
      "location_summary": "Joint Base Lewis McChord, Washington",
      "locations": [
        {
          "city": "Joint Base Lewis McChord",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06380179"
    },
    {
      "nct_id": "NCT03161327",
      "title": "Digital Ankle Brachial Index (ABI) as a Screening Tool in Detecting Peripheral Arterial Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Peripheral Artery Disease",
        "Amputation",
        "Smoking",
        "Diabetes",
        "Hypercholesterolemia",
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "ABI using QuantaFlo™",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "St. Louis University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 238,
      "start_date": "2017-07-15",
      "completion_date": "2017-09-14",
      "has_results": true,
      "last_update_posted_date": "2018-12-11",
      "last_synced_at": "2026-09-24T00:55:15.434Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03161327"
    },
    {
      "nct_id": "NCT01476644",
      "title": "How Has Glaucoma Affected Your Quality of Life?",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Glaucoma",
        "Quality of Life"
      ],
      "interventions": [
        {
          "name": "Clinical evaluation",
          "type": "OTHER"
        },
        {
          "name": "Performance based measures",
          "type": "OTHER"
        },
        {
          "name": "Subjective measures of vision-related quality of life",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Wills Eye",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 161,
      "start_date": "2011-10",
      "completion_date": "2017-06",
      "has_results": true,
      "last_update_posted_date": "2019-11-15",
      "last_synced_at": "2026-09-24T00:55:15.434Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01476644"
    },
    {
      "nct_id": "NCT01384487",
      "title": "Nidek RS3000 Comparative Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Glaucoma",
        "Retinal Disease",
        "Corneal Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Nidek Co. LTD.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 89,
      "start_date": "2011-06",
      "completion_date": "2011-11",
      "has_results": false,
      "last_update_posted_date": "2012-02-20",
      "last_synced_at": "2026-09-24T00:55:15.434Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01384487"
    },
    {
      "nct_id": "NCT05624593",
      "title": "P200TE and Predicate Agreement and Precision Study",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Normal",
        "Retina Disease",
        "Glaucoma"
      ],
      "interventions": [
        {
          "name": "P200TE",
          "type": "DEVICE"
        },
        {
          "name": "Predicate",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Optos, PLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 125,
      "start_date": "2022-11-04",
      "completion_date": "2023-03",
      "has_results": false,
      "last_update_posted_date": "2022-11-22",
      "last_synced_at": "2026-09-24T00:55:15.434Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05624593"
    },
    {
      "nct_id": "NCT01809704",
      "title": "Clinical Validation of New OCT System",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Subjects Presenting With Normal or With Ocular Pathology"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Topcon Medical Systems, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 87,
      "start_date": "2013-02-25",
      "completion_date": "2013-07-03",
      "has_results": false,
      "last_update_posted_date": "2022-06-10",
      "last_synced_at": "2026-09-24T00:55:15.434Z",
      "location_count": 3,
      "location_summary": "La Jolla, California • Jamaica, New York • New York, New York",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Jamaica",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01809704"
    }
  ]
}