{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Color+vision&page=2",
    "query": {
      "intervention": "Color vision",
      "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=Color+vision&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-08T15:03:15.357Z",
  "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": "NCT07691463",
      "title": "Evaluating How Well Different Types of Light-sensitive Cells in the Eye Contribute to Its Focusing Ability",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Monochromatic",
        "L- and S-cone Modulation Only",
        "L- and M-cone Modulation Only",
        "M and S-cone Modulation Only"
      ],
      "interventions": [
        {
          "name": "Color",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Rochester Institute of Technology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "Up to 35 Years"
      },
      "enrollment_count": 20,
      "start_date": "2026-07-02",
      "completion_date": "2026-12-15",
      "has_results": false,
      "last_update_posted_date": "2026-07-17",
      "last_synced_at": "2026-09-08T15:03:15.357Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07691463"
    },
    {
      "nct_id": "NCT05296265",
      "title": "Efficacy and Mechanisms of Virtual Reality Treatment of Phantom Leg Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Phantom Limb Pain"
      ],
      "interventions": [
        {
          "name": "VR treatment for phantom limb pain",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Albert Einstein Healthcare Network",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 46,
      "start_date": "2022-05-10",
      "completion_date": "2025-04-06",
      "has_results": false,
      "last_update_posted_date": "2025-10-03",
      "last_synced_at": "2026-09-08T15:03:15.357Z",
      "location_count": 3,
      "location_summary": "Elkins Park, Pennsylvania • Philadelphia, Pennsylvania • Seattle, Washington",
      "locations": [
        {
          "city": "Elkins Park",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05296265"
    },
    {
      "nct_id": "NCT04297969",
      "title": "Hyperopia Detection GCK With Glow Fixation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Amblyopia Bilateral",
        "Hyperopia of Both Eyes",
        "Astigmatism Bilateral",
        "Accommodation Disorder"
      ],
      "interventions": [
        {
          "name": "objective pediatric vision screen \"GCK glow fixation\"",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Alaska Blind Child Discovery",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "1 Month",
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "1 Month to 20 Years"
      },
      "enrollment_count": 133,
      "start_date": "2019-10-14",
      "completion_date": "2020-03-03",
      "has_results": false,
      "last_update_posted_date": "2020-10-19",
      "last_synced_at": "2026-09-08T15:03:15.357Z",
      "location_count": 1,
      "location_summary": "Anchorage, Alaska",
      "locations": [
        {
          "city": "Anchorage",
          "state": "Alaska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04297969"
    },
    {
      "nct_id": "NCT03366493",
      "title": "The Study of Folate Receptor-Mediated Staining Solution (FRD™) In Cervical Lesion Detection",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Cervical Intraepithelial Neoplasia Grade 2/3"
      ],
      "interventions": [
        {
          "name": "FRD",
          "type": "COMBINATION_PRODUCT"
        },
        {
          "name": "Cytology",
          "type": "OTHER"
        },
        {
          "name": "HPV testing",
          "type": "OTHER"
        },
        {
          "name": "Colposcopy",
          "type": "PROCEDURE"
        },
        {
          "name": "ECC",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "COMBINATION_PRODUCT",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "GY Highland Biotech LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "60 Years",
        "sex": "FEMALE",
        "summary": "20 Years to 60 Years · Female only"
      },
      "enrollment_count": 200,
      "start_date": "2017-12-07",
      "completion_date": "2018-12-07",
      "has_results": false,
      "last_update_posted_date": "2017-12-08",
      "last_synced_at": "2026-09-08T15:03:15.357Z",
      "location_count": 1,
      "location_summary": "Augusta, Georgia",
      "locations": [
        {
          "city": "Augusta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03366493"
    },
    {
      "nct_id": "NCT05570604",
      "title": "Computerized Cognitive Training in Breast Cancer Survivors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer",
        "Cognitive Change",
        "Cognitive Impairment",
        "Quality of Life"
      ],
      "interventions": [
        {
          "name": "Sweep Seeker",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Bird Safari",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Jewel Diver",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Master Gardener",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Road Tour",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Computerized Crossword Puzzles",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "21 Years and older · Female only"
      },
      "enrollment_count": 46,
      "start_date": "2017-05-17",
      "completion_date": "2020-03-20",
      "has_results": true,
      "last_update_posted_date": "2025-04-24",
      "last_synced_at": "2026-09-08T15:03:15.357Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05570604"
    },
    {
      "nct_id": "NCT02935517",
      "title": "Safety and Efficacy Trial of AAV Gene Therapy in Patients With CNGA3 Achromatopsia (A Clarity Clinical Trial)",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Achromatopsia"
      ],
      "interventions": [
        {
          "name": "AGTC-402",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Beacon Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "4 Years and older"
      },
      "enrollment_count": 24,
      "start_date": "2017-08-03",
      "completion_date": "2026-08",
      "has_results": false,
      "last_update_posted_date": "2022-07-22",
      "last_synced_at": "2026-09-08T15:03:15.357Z",
      "location_count": 5,
      "location_summary": "Gainesville, Florida • Miami, Florida • Boston, Massachusetts + 2 more",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02935517"
    },
    {
      "nct_id": "NCT04124029",
      "title": "Contributions of mTBI to Neurodegeneration Due to Chronic Traumatic Encephalopathy (CTE) and Alzheimer's Disease (AD)",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Mild Traumatic Brain Injury",
        "Moderate Traumatic Brain Injury",
        "Mild Cognitive Impairment"
      ],
      "interventions": [
        {
          "name": "No Intervention is used for this study but all subjects will be asked to complete electroencephalogram (EEG) testing and an MRI scan.",
          "type": "DEVICE"
        },
        {
          "name": "No intervention is used for this study but all subjects will be asked to complete a venous blood draw procedure and a lumbar puncture procedure.",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "PROCEDURE"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "30 Years to 90 Years"
      },
      "enrollment_count": 800,
      "start_date": "2021-07-01",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-09-01",
      "last_synced_at": "2026-09-08T15:03:15.357Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04124029"
    },
    {
      "nct_id": "NCT02613091",
      "title": "Effect of Clemastine Fumarate on Color Vision in Healthy Controls",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Subjects"
      ],
      "interventions": [
        {
          "name": "Clemastine fumarate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 23,
      "start_date": "2016-04",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2016-11-03",
      "last_synced_at": "2026-09-08T15:03:15.357Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02613091"
    },
    {
      "nct_id": "NCT02033200",
      "title": "Safety Study Looking at the Effects of Stendra on Vision",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Vision"
      ],
      "interventions": [
        {
          "name": "Stendra 200 mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "VIVUS LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "MALE",
        "summary": "18 Years to 45 Years · Male only"
      },
      "enrollment_count": 80,
      "start_date": "2014-01",
      "completion_date": "2014-01",
      "has_results": true,
      "last_update_posted_date": "2015-03-13",
      "last_synced_at": "2026-09-08T15:03:15.357Z",
      "location_count": 1,
      "location_summary": "Tempe, Arizona",
      "locations": [
        {
          "city": "Tempe",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02033200"
    },
    {
      "nct_id": "NCT02921776",
      "title": "Vidatalk Communication Application: Usability, Acceptability and Efficacy Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Nonverbal Communication",
        "Critical Illness"
      ],
      "interventions": [
        {
          "name": "Aim 1 - VidaTalk - post-extubation",
          "type": "OTHER"
        },
        {
          "name": "Aim 2 - VidaTalk - intubated",
          "type": "OTHER"
        },
        {
          "name": "Aim 3 - VidaTalk tablet app",
          "type": "DEVICE"
        },
        {
          "name": "Aim 3 - attention-control with non-VidaTalk tablet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DEVICE"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 147,
      "start_date": "2018-02-19",
      "completion_date": "2019-06-11",
      "has_results": true,
      "last_update_posted_date": "2022-03-31",
      "last_synced_at": "2026-09-08T15:03:15.357Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02921776"
    }
  ]
}