{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Visual+Disturbance+Questionnaire",
    "query": {
      "intervention": "Visual Disturbance Questionnaire"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-06T14:05:36.069Z",
  "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": "NCT04889833",
      "title": "Effects of Hypnosis Therapy on Outcomes in Shoulder Replacement Therapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Anxiety",
        "Opioid Use"
      ],
      "interventions": [
        {
          "name": "hypnosis therapy",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Foundation for Orthopaedic Research and Education",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 144,
      "start_date": "2020-12-19",
      "completion_date": "2023-12-01",
      "has_results": false,
      "last_update_posted_date": "2024-04-01",
      "last_synced_at": "2026-09-06T14:05:36.069Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04889833"
    },
    {
      "nct_id": "NCT06041139",
      "title": "Visual Outcomes and Patient Satisfaction With Bilateral PanOptix Verses Bilateral Synergy",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pseudophakia"
      ],
      "interventions": [
        {
          "name": "Visual Acuity",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Defocus Curve",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Halo and Glare testing",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Patient Questionnaires",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "Berkeley Eye Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 230,
      "start_date": "2022-09-12",
      "completion_date": "2024-04-16",
      "has_results": true,
      "last_update_posted_date": "2025-05-23",
      "last_synced_at": "2026-09-06T14:05:36.069Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06041139"
    },
    {
      "nct_id": "NCT02658708",
      "title": "Bright Light on Fatigue in Women Being Treated for Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Breast Neoplasms",
        "Breast Cancer",
        "Cancer of Breast",
        "Cancer of the Breast"
      ],
      "interventions": [
        {
          "name": "Bright blue-green light using light visor cap",
          "type": "OTHER"
        },
        {
          "name": "Dim red light using light visor cap",
          "type": "OTHER"
        },
        {
          "name": "European Organization for Research and Treatment of Cancer-Quality of Life Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Epworth Sleepiness Scale",
          "type": "OTHER"
        },
        {
          "name": "Pittsburgh Sleep Quality Index",
          "type": "OTHER"
        },
        {
          "name": "Patient-Reported Outcomes Measurement Information System (PROMIS)-Sleep Disturbance",
          "type": "OTHER"
        },
        {
          "name": "Patient-Reported Outcomes Measurement Information System (PROMIS)-Cancer-Fatigue",
          "type": "OTHER"
        },
        {
          "name": "Digital foot candle datalogging light meter (Extech Instrument, Model SDL400)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Polysomnography (Easy Ambulatory 2 Cadwell, Kennewick, WA)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Horne-Ostberg Morningness-Eveningness Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Daily Fatigue and Sleep Log",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Washington University School of Medicine",
      "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": 19,
      "start_date": "2015-10-12",
      "completion_date": "2017-05-09",
      "has_results": false,
      "last_update_posted_date": "2017-09-25",
      "last_synced_at": "2026-09-06T14:05:36.069Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02658708"
    },
    {
      "nct_id": "NCT05811923",
      "title": "Changes in Metabolic Rate and Perceptual Indicators After Acute Ingestion of Paraxanthine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Metabolic Syndrome",
        "Caffeine"
      ],
      "interventions": [
        {
          "name": "Venous Blood Collection",
          "type": "OTHER"
        },
        {
          "name": "Resting Metabolic Rate Determination",
          "type": "OTHER"
        },
        {
          "name": "Mood State",
          "type": "OTHER"
        },
        {
          "name": "Visual Analog Scales",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Lindenwood University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "39 Years",
        "sex": "ALL",
        "summary": "18 Years to 39 Years"
      },
      "enrollment_count": 20,
      "start_date": "2021-12-12",
      "completion_date": "2022-10-12",
      "has_results": false,
      "last_update_posted_date": "2023-04-13",
      "last_synced_at": "2026-09-06T14:05:36.069Z",
      "location_count": 1,
      "location_summary": "Saint Charles, Missouri",
      "locations": [
        {
          "city": "Saint Charles",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05811923"
    },
    {
      "nct_id": "NCT06064916",
      "title": "Visual Outcomes and Patient Satisfaction With Vivity IOL in Post Refractive Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pseudophakia"
      ],
      "interventions": [
        {
          "name": "Visual Acuity",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Defocus Curve",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Intraocular Lens Satisfaction (IOLSAT) Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Quality of Vision After Surgery (QUVID) Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Visual Disturbance Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Topography and Tomography",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "Berkeley Eye Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2023-07-25",
      "completion_date": "2024-12-11",
      "has_results": true,
      "last_update_posted_date": "2025-05-23",
      "last_synced_at": "2026-09-06T14:05:36.069Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06064916"
    },
    {
      "nct_id": "NCT04242875",
      "title": "The Effects of Angle Kappa on Clinical Outcomes With the PanOptix Intraocular Lens",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pseudophakia"
      ],
      "interventions": [
        {
          "name": "Angle Kappa",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Visual disturbance questionnaire.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "Carolina Eyecare Physicians, LLC",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2020-01-21",
      "completion_date": "2021-04-27",
      "has_results": true,
      "last_update_posted_date": "2023-03-17",
      "last_synced_at": "2026-09-06T14:05:36.069Z",
      "location_count": 1,
      "location_summary": "Mt. Pleasant, South Carolina",
      "locations": [
        {
          "city": "Mt. Pleasant",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04242875"
    }
  ]
}