{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Normal+Macular+Health",
    "query": {
      "intervention": "Normal Macular Health"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-06T15:58:32.785Z",
  "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": "NCT04169802",
      "title": "Study Evaluating Retinal Health Monitoring System Visual Acuity Module.",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Age Related Macular Degeneration"
      ],
      "interventions": [
        {
          "name": "Retinal Health Monitoring System Visual Acuity Module",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Sloan letter, logarithmic near visual acuity chart (Reference Chart)",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Kubota Vision Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 25,
      "start_date": "2019-11-20",
      "completion_date": "2020-04-15",
      "has_results": false,
      "last_update_posted_date": "2021-02-21",
      "last_synced_at": "2026-09-06T15:58:32.785Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04169802"
    },
    {
      "nct_id": "NCT04112667",
      "title": "Functionally Validated Structural Endpoints for Early AMD",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Age-related Macular Degeneration",
        "Aging"
      ],
      "interventions": [
        {
          "name": "Normal Macular Health",
          "type": "OTHER"
        },
        {
          "name": "Early Macular Degeneration",
          "type": "OTHER"
        },
        {
          "name": "Young Normals",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Cynthia Owsley",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "20 Years and older"
      },
      "enrollment_count": 556,
      "start_date": "2019-10-07",
      "completion_date": "2024-10-31",
      "has_results": false,
      "last_update_posted_date": "2025-09-26",
      "last_synced_at": "2026-09-06T15:58:32.785Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04112667"
    },
    {
      "nct_id": "NCT05414994",
      "title": "Assessment of the Ocular Microbiome in Health and Disease",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Microbial Colonization",
        "Eye Diseases",
        "Ophthalmopathy"
      ],
      "interventions": [
        {
          "name": "Eye swab",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 500,
      "start_date": "2023-09-07",
      "completion_date": "2027-12-30",
      "has_results": false,
      "last_update_posted_date": "2026-01-22",
      "last_synced_at": "2026-09-06T15:58:32.785Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05414994"
    },
    {
      "nct_id": "NCT07270133",
      "title": "Longitudinal Natural History Study of Retinal Function in Eyes of Patients With Diabetes",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Diabetic Retinal Disease"
      ],
      "interventions": [
        {
          "name": "Visual Acuity",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Reading Speed",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Visual Field testing",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Contrast sensitivity",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Electroretinography (ERG) and pupillography in light- and dark-adapted states",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Ultrawide field-color photograph",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Ultrawide field-Fluorescein angiogram",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Optical coherence tomography",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Optical coherence tomography- Angiography",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "Jaeb Center for Health Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 450,
      "start_date": "2026-06-01",
      "completion_date": "2032-12",
      "has_results": false,
      "last_update_posted_date": "2026-08-20",
      "last_synced_at": "2026-09-06T15:58:32.785Z",
      "location_count": 4,
      "location_summary": "Augusta, Georgia • Boston, Massachusetts • Detroit, Michigan + 1 more",
      "locations": [
        {
          "city": "Augusta",
          "state": "Georgia"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Monroeville",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07270133"
    },
    {
      "nct_id": "NCT04428242",
      "title": "Study Evaluating Retinal Health Monitoring System Thickness Module",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Macular Edema",
        "Macular Degeneration"
      ],
      "interventions": [
        {
          "name": "RHMS-RTM",
          "type": "DEVICE"
        },
        {
          "name": "SD-OCT",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Kubota Vision Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2020-04",
      "completion_date": "2020-07",
      "has_results": false,
      "last_update_posted_date": "2021-02-21",
      "last_synced_at": "2026-09-06T15:58:32.785Z",
      "location_count": 1,
      "location_summary": "Sacramento, California",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04428242"
    }
  ]
}