Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 19, 2026, 3:14 PM EDT

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Showing 25–29 of 5 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
Visual Snow Syndrome, Migraine, Healthy
Interventions
Visual Adaptation, Assessments and Questionnaires, Functional Magnetic Resonance Imaging (fMRI), Magnetic Resonance Imaging (MRS)
Behavioral · Device
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 60 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2030
U.S. locations
1
States / cities
Minneapolis, Minnesota
Recruiting No phase listed Observational Accepts healthy volunteers

Rod and Cone Mediated Function in Retinal Disease

NCT02617966
Conditions
Retinal Degeneration, Retinitis Pigmentosa, Stargardt's Disease
Interventions
Not listed
Lead sponsor
National Eye Institute (NEI)
NIH
Eligibility
5 Years to 100 Years
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2029
U.S. locations
1
States / cities
Bethesda, Maryland
Completed Phase 1 Interventional Accepts healthy volunteers

Phase 1 Pilot Study of 4-MP to Treat Stargardt Macular Dystrophy

NCT00346853
Conditions
Macular Dystrophy, Corneal
Interventions
4-Methylpyrazole, saline
Drug · Other
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Salt Lake City, Utah
Conditions
Primary Open Angle Glaucoma
Interventions
Life Space Questionnaire, Low Luminance Questionnaire, Contrast sensitivity under dim illumination, Visual field under dim illumination (MAIA), Macular Pigment Optical Density (MPOD), Dark Adaptation
Diagnostic Test
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 100 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2026
U.S. locations
1
States / cities
Birmingham, Alabama
Conditions
Decrease in Night Vision, Disturbance; Vision, Loss
Interventions
Phentolamine Mesylate Ophthalmic Solution 1%, Phentolamine Mesylate Ophthalmic Solution Vehicle (Placebo)
Drug · Other
Lead sponsor
Ocuphire Pharma, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Lynbrook, New York