{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Night+Vision+Loss",
    "query": {
      "condition": "Night Vision Loss"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 14,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Night+Vision+Loss&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T09:16:46.046Z",
  "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": "NCT00500812",
      "title": "A Safety Study for Cethrin (BA-210) in the Treatment of Acute Thoracic and Cervical Spinal Cord Injuries",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Spinal Cord Injury"
      ],
      "interventions": [
        {
          "name": "Cethrin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vertex Pharmaceuticals Incorporated",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "16 Years to 70 Years"
      },
      "enrollment_count": 48,
      "start_date": "2005-02",
      "completion_date": "2009-02",
      "has_results": false,
      "last_update_posted_date": "2016-04-14",
      "last_synced_at": "2026-05-22T09:16:46.046Z",
      "location_count": 5,
      "location_summary": "Phoenix, Arizona • Cincinnati, Ohio • Philadelphia, Pennsylvania + 2 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Charlottesville",
          "state": "Virginia"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00500812"
    },
    {
      "nct_id": "NCT02435940",
      "title": "Inherited Retinal Degenerative Disease Registry",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Eye Diseases Hereditary",
        "Retinal Disease",
        "Achromatopsia",
        "Bardet-Biedl Syndrome",
        "Bassen-Kornzweig Syndrome",
        "Batten Disease",
        "Best Disease",
        "Choroidal Dystrophy",
        "Choroideremia",
        "Cone Dystrophy",
        "Cone-Rod Dystrophy",
        "Congenital Stationary Night Blindness",
        "Enhanced S-Cone Syndrome",
        "Fundus Albipunctatus",
        "Goldmann-Favre Syndrome",
        "Gyrate Atrophy",
        "Juvenile Macular Degeneration",
        "Kearns-Sayre Syndrome",
        "Leber Congenital Amaurosis",
        "Refsum Syndrome",
        "Retinitis Pigmentosa",
        "Retinitis Punctata Albescens",
        "Retinoschisis",
        "Rod-Cone Dystrophy",
        "Rod Dystrophy",
        "Rod Monochromacy",
        "Stargardt Disease",
        "Usher Syndrome"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Foundation Fighting Blindness",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 20000,
      "start_date": "2014-06",
      "completion_date": "2037-06",
      "has_results": false,
      "last_update_posted_date": "2026-05-19",
      "last_synced_at": "2026-05-22T09:16:46.046Z",
      "location_count": 1,
      "location_summary": "Columbia, Maryland",
      "locations": [
        {
          "city": "Columbia",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02435940"
    },
    {
      "nct_id": "NCT05085964",
      "title": "An Open-Label Extension Study to Evaluate Safety & Tolerability of QR-421a in Subjects With Retinitis Pigmentosa",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Retinitis Pigmentosa",
        "Usher Syndrome Type 2"
      ],
      "interventions": [
        {
          "name": "RNA antisense oligonucleotide for intravitreal injection",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Laboratoires Thea",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 21,
      "start_date": "2021-09-16",
      "completion_date": "2022-10-18",
      "has_results": true,
      "last_update_posted_date": "2024-08-07",
      "last_synced_at": "2026-05-22T09:16:46.046Z",
      "location_count": 4,
      "location_summary": "Boston, Massachusetts • Ann Arbor, Michigan • Portland, Oregon + 1 more",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05085964"
    },
    {
      "nct_id": "NCT06349759",
      "title": "Safety and Efficacy of 0.75% Phentolamine Ophthalmic Solution in Subjects With Post-refractive Surgery Visual Disturbances",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Mesopic Vision",
        "Night Vision Loss"
      ],
      "interventions": [
        {
          "name": "phentolamine ophthalmic solution 0.75%, a non-selective alpha-1 and alpha-2 adrenergic antagonist",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ocuphire Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 200,
      "start_date": "2024-04-01",
      "completion_date": "2026-02-19",
      "has_results": false,
      "last_update_posted_date": "2026-03-12",
      "last_synced_at": "2026-05-22T09:16:46.046Z",
      "location_count": 25,
      "location_summary": "Pheonix, Arizona • Scottsdale, Arizona • Bakersfield, California + 20 more",
      "locations": [
        {
          "city": "Pheonix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06349759"
    },
    {
      "nct_id": "NCT05045703",
      "title": "The Dark-Adapted Retinal Function Response in Choroideremia (DARC) Study",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Choroideremia"
      ],
      "interventions": [
        {
          "name": "Vitamin A palmitate",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "15 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "15 Years and older · Male only"
      },
      "enrollment_count": 0,
      "start_date": "2023-05",
      "completion_date": "2024-05",
      "has_results": false,
      "last_update_posted_date": "2023-06-29",
      "last_synced_at": "2026-05-22T09:16:46.046Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05045703"
    },
    {
      "nct_id": "NCT02909985",
      "title": "Visual Activity Evoked by Infrared in Humans After Dark Adaptation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Age Related Macular Degeneration",
        "Retinitis Pigmentosa",
        "Congenital Stationary Night Blindness",
        "Colorblindness"
      ],
      "interventions": [
        {
          "name": "Tungsten halogen light with narrow bandpass filters",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of New Mexico",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 21,
      "start_date": "2015-09",
      "completion_date": "2016-08",
      "has_results": true,
      "last_update_posted_date": "2024-12-13",
      "last_synced_at": "2026-05-22T09:16:46.046Z",
      "location_count": 1,
      "location_summary": "Albuquerque, New Mexico",
      "locations": [
        {
          "city": "Albuquerque",
          "state": "New Mexico"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02909985"
    },
    {
      "nct_id": "NCT06961864",
      "title": "Investigating Brain Function in People With and Without Visual Snow Syndrome Using Adaptation to Visual Stimuli",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Visual Snow Syndrome",
        "Migraine",
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Visual Adaptation",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Assessments and Questionnaires",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Functional Magnetic Resonance Imaging (fMRI)",
          "type": "DEVICE"
        },
        {
          "name": "Magnetic Resonance Imaging (MRS)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DEVICE"
      ],
      "sponsor": "University of Minnesota",
      "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": 100,
      "start_date": "2025-04-11",
      "completion_date": "2030-03-31",
      "has_results": false,
      "last_update_posted_date": "2026-01-14",
      "last_synced_at": "2026-05-22T09:16:46.046Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06961864"
    },
    {
      "nct_id": "NCT03011541",
      "title": "Stem Cell Ophthalmology Treatment Study II",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Retinal Disease",
        "Age-Related Macular Degeneration",
        "Retinitis Pigmentosa",
        "Stargardt Disease",
        "Optic Neuropathy",
        "Nonarteritic Ischemic Optic Neuropathy",
        "Optic Atrophy",
        "Optic Nerve Disease",
        "Glaucoma",
        "Leber Hereditary Optic Neuropathy",
        "Blindness",
        "Vision Loss Night",
        "Vision Loss Partial",
        "Vision, Low",
        "Retinopathy",
        "Maculopathy",
        "Macular Degeneration",
        "Retina Atrophy"
      ],
      "interventions": [
        {
          "name": "Arm 1",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "MD Stem Cells",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 500,
      "start_date": "2016-01",
      "completion_date": "2027-07-31",
      "has_results": false,
      "last_update_posted_date": "2025-03-20",
      "last_synced_at": "2026-05-22T09:16:46.046Z",
      "location_count": 2,
      "location_summary": "Westport, Connecticut • Coral Springs, Florida",
      "locations": [
        {
          "city": "Westport",
          "state": "Connecticut"
        },
        {
          "city": "Coral Springs",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03011541"
    },
    {
      "nct_id": "NCT01703559",
      "title": "The Safety and Efficacy of Phentolamine Mesylate Ophthalmic Solution in Subjects With Severe Night Vision Disturbances",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Night Vision Complaints",
        "Decrease in Night Vision",
        "Disturbance; Vision, Loss"
      ],
      "interventions": [
        {
          "name": "Phentolamine Mesylate Ophthalmic Solution 1.0%",
          "type": "DRUG"
        },
        {
          "name": "Phentolamine Mesylate Ophthalmic Solution 0.5%",
          "type": "DRUG"
        },
        {
          "name": "Phentolamine Mesylate Ophthalmic Solution Vehicle (Placebo)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Ocuphire Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 60,
      "start_date": "2011-09-09",
      "completion_date": "2012-04-30",
      "has_results": false,
      "last_update_posted_date": "2019-08-01",
      "last_synced_at": "2026-05-22T09:16:46.046Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01703559"
    },
    {
      "nct_id": "NCT04004507",
      "title": "Single Dose Study of Phentolamine Mesylate Eye Drops in Patients With Severe Night Vision Disturbances",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Decrease in Night Vision",
        "Disturbance; Vision, Loss"
      ],
      "interventions": [
        {
          "name": "Phentolamine Mesylate Ophthalmic Solution 1%",
          "type": "DRUG"
        },
        {
          "name": "Phentolamine Mesylate Ophthalmic Solution Vehicle (Placebo)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Ocuphire Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 24,
      "start_date": "2007-08",
      "completion_date": "2008-02",
      "has_results": true,
      "last_update_posted_date": "2024-02-15",
      "last_synced_at": "2026-05-22T09:16:46.046Z",
      "location_count": 1,
      "location_summary": "Lynbrook, New York",
      "locations": [
        {
          "city": "Lynbrook",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04004507"
    }
  ]
}