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Showing 1–24 of 43 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Contrast Allergies Clear all
Completed No phase listed Observational Accepts healthy volunteers

Evaluation of the EpiGlare Tester for the Measurement of Glare-Induced Changes in BSCVA in Subjects With and Without Cataracts

NCT04739397
View directory record Official record
Conditions
Cataract
Interventions
Glare Testing
Device
Lead sponsor
Epico, LLC
Industry
Eligibility
18 Years and older
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 3, 2021 · Synced Jun 10, 2026, 1:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Role of Glare and Spectral Filtering on Contrast Sensitivity: A Pilot Study

NCT05582304
View directory record Official record
Conditions
Visual Acuity
Interventions
Test Lens, Control Lens
Device
Lead sponsor
Johnson & Johnson Vision Care, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 30, 2024 · Synced Jun 10, 2026, 1:39 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Visual Discomfort and Reading

NCT00402155
View directory record Official record
Conditions
Visual Fatigue
Interventions
Stress on visual discomfort
Behavioral
Lead sponsor
Southern California College of Optometry at Marshall B. Ketchum University
Other
Eligibility
17 Years to 30 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2008
U.S. locations
1
States / cities
Claremont, California
Source: ClinicalTrials.gov public record
Updated Nov 12, 2009 · Synced Jun 10, 2026, 1:39 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Imaging Lung Function Using Oxygen Enhanced MRI

NCT01731015
View directory record Official record
Conditions
COPD, Asthma, Cystic Fibrosis, Emphysema, Small Airways Disease
Interventions
Medical Grade Oxygen
Drug
Lead sponsor
Hal C Charles
Other
Eligibility
18 Years to 90 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 21, 2014 · Synced Jun 10, 2026, 1:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Prospective Evaluation of Contrast Sensitivity and Disability Glare in Refractive Surgery, a Sub-Study of: Initial Evaluation of Excimer Laser Keratorefractive Surgery in U.S. Army Personnel (WU # 2335-99)

NCT00413868
View directory record Official record
Conditions
Myopia
Interventions
LASIK, PRK, Small target contrast sensitivity and disability glare
Procedure · Behavioral
Lead sponsor
Walter Reed Army Medical Center
Federal
Eligibility
21 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Mar 31, 2008 · Synced Jun 10, 2026, 1:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Visual Effect of an Investigational Artificial Tear in the Tear Layer.

NCT00395759
View directory record Official record
Conditions
Dry Eye Disease
Interventions
Optiva artificial tear by Allergan
Drug
Lead sponsor
Southern California College of Optometry at Marshall B. Ketchum University
Other
Eligibility
18 Years to 40 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Fullerton, California
Source: ClinicalTrials.gov public record
Updated Oct 22, 2007 · Synced Jun 10, 2026, 1:39 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Vision Measured by the Vimetrics CVA Compared With Chart Testing Under Similar Luminance and Contrast Conditions

NCT02028351
View directory record Official record
Conditions
Refractive Error, Cataract, Maculopathy
Interventions
Not listed
Lead sponsor
Sinclair Technologies, LLC
Industry
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Elkins Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 6, 2014 · Synced Jun 10, 2026, 1:39 AM EDT
Withdrawn Phase 4 Interventional

Use of Gadolinium in CT Pulmonary Angiography

NCT02234375
View directory record Official record
Conditions
Pulmonary Embolism
Interventions
Gadolinium
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
20 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 16, 2020 · Synced Jun 10, 2026, 1:39 AM EDT
Completed No phase listed Observational

Reactions to Contrast Media (CM) Administered at the Time of the Endoscopic Retrograde Cholangiopancreatography (ERCP)

NCT00900640
View directory record Official record
Conditions
Contrast Allergies
Interventions
ERCP as medically indicated by subjects referring physician
Procedure
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2017
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 15, 2017 · Synced Jun 10, 2026, 1:39 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Baylor Infant and Toddler Biomarker of Nutrition Study

NCT05869760
View directory record Official record
Conditions
Healthy Nutrition, Healthy Diet
Interventions
Carotenoid Intake, Serum carotenoid concentrations
Other
Lead sponsor
Baylor College of Medicine
Other
Eligibility
3 Months to 24 Months
Enrollment
208 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 26, 2026 · Synced Jun 10, 2026, 1:39 AM EDT
Completed Phase 2 Interventional

Single Oral Doses Study of Nerispirdine on Visual Function in Patients With Multiple Sclerosis

NCT00772525
View directory record Official record
Conditions
Multiple Sclerosis, Optic Nerve, Neuritis
Interventions
Nerispirdine, Placebo
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Bridgewater, New Jersey
Source: ClinicalTrials.gov public record
Updated Feb 25, 2016 · Synced Jun 10, 2026, 1:39 AM EDT
Completed Not applicable Interventional

Diabetes Visual Function Supplement Study

NCT01646047
View directory record Official record
Conditions
Diabetes Mellitus - Type 1, Diabetes Mellitus - Type 2, Non-proliferative Diabetic Retinopathy
Interventions
multi-component nutritional supplement capsules, multi-component dietary supplement
Dietary Supplement
Lead sponsor
ZeaVision, LLC
Industry
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Jan 21, 2015 · Synced Jun 10, 2026, 1:39 AM EDT
Completed Not applicable Interventional

CT Scan Using IV Contrast Alone for Pediatric Appendicitis

NCT00716703
View directory record Official record
Conditions
Appendicitis, Child, Contrast Media
Interventions
CT Scan using IV contrast alone
Other
Lead sponsor
University of Rochester
Other
Eligibility
3 Years to 18 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jul 15, 2008 · Synced Jun 10, 2026, 1:39 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Comparing Vision Tests in a Virtual Reality Headset to Existing Analogues

NCT04714424
View directory record Official record
Conditions
Ptosis, Macular Degeneration, Ametropia
Interventions
Virtual Reality Headset
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 27, 2024 · Synced Jun 10, 2026, 1:39 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Comparison of Higher Order Aberrations and Contrast Sensitivity Between Acrysof SN60AT, SN60WF and Restore Intraocular Lenses

NCT00345085
View directory record Official record
Conditions
Refractive Errors
Interventions
Wavefront and Contrast Sensitivity
Device
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jul 24, 2014 · Synced Jun 10, 2026, 1:39 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

The Safety and Efficacy of Phentolamine Mesylate Ophthalmic Solution in Subjects With Severe Night Vision Disturbances

NCT01703559
View directory record Official record
Conditions
Night Vision Complaints, Decrease in Night Vision, Disturbance; Vision, Loss
Interventions
Phentolamine Mesylate Ophthalmic Solution 1.0%, Phentolamine Mesylate Ophthalmic Solution 0.5%, Phentolamine Mesylate Ophthalmic Solution Vehicle (Placebo)
Drug · Other
Lead sponsor
Ocuphire Pharma, Inc.
Industry
Eligibility
18 Years to 45 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 31, 2019 · Synced Jun 10, 2026, 1:39 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Neural and Visual Responses to Light in Bipolar Disorder: A Novel Putative Biomarker

NCT02048995
View directory record Official record
Conditions
Bipolar Depression
Interventions
Not listed
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 50 Years
Enrollment
91 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 28, 2018 · Synced Jun 10, 2026, 1:39 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Building a Database of Results From People Without Eye Problems

NCT02627339
View directory record Official record
Conditions
Glaucoma
Interventions
Not listed
Lead sponsor
Wills Eye
Other
Eligibility
10 Years to 90 Years
Enrollment
208 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 20, 2016 · Synced Jun 10, 2026, 1:39 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Combining Donepezil With Perceptual Learning in Normal and Amblyopic Human The Effect of Donepezil on Perceptual Learning in Adult Amblyopia

NCT03109314
View directory record Official record
Conditions
Amblyopia
Interventions
Donepezil, Single-letter training, Uncrowd training
Drug · Behavioral
Lead sponsor
Dennis Levi
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2018
U.S. locations
1
States / cities
Berkeley, California
Source: ClinicalTrials.gov public record
Updated Jan 16, 2019 · Synced Jun 10, 2026, 1:39 AM EDT
Recruiting Phase 3 Interventional

Privosegtor Investigation in Optic Neuropathies Efficacy Evaluation Research

NCT07623668
View directory record Official record
Conditions
Optic Neuritis
Interventions
Privosegtor, Methylprednisolone, Placebo
Drug · Other
Lead sponsor
Oculis
Industry
Eligibility
18 Years to 50 Years
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Jun 10, 2026, 1:39 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Ampyra for Optic Neuritis in Multiple Sclerosis

NCT01337986
View directory record Official record
Conditions
Multiple Sclerosis, Optic Neuritis
Interventions
Dalfampridine/Placebo, Placebo/Dalfampridine
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 55 Years
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 29, 2020 · Synced Jun 10, 2026, 1:39 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Spaeth/Richman Contrast Sensitivity Test

NCT01300949
View directory record Official record
Conditions
Glaucoma
Interventions
Spaeth/Richman Contrast Sensitivity Test, Pelli-Robson Contrast Sensitivity Chart
Diagnostic Test
Lead sponsor
Wills Eye
Other
Eligibility
18 Years and older
Enrollment
314 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 10, 2018 · Synced Jun 10, 2026, 1:39 AM EDT
Completed Phase 1Phase 2 Interventional

The Safety and Efficacy Study of Ethylenediaminetetraacetic Acid (EDTA) Ophthalmic Solution in Patients With Loss of Contrast Sensitivity Due to Age-Related, Low-Grade Nuclear Cataract

NCT06365762
View directory record Official record
Conditions
Age Related Cataracts
Interventions
EDTA Ophthalmic Solution 2.6%, EDTA Ophthalmic Solution 1.3%, Saline Solution (Placebo)
Drug
Lead sponsor
Livionex Inc.
Industry
Eligibility
50 Years and older
Enrollment
111 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
6
States / cities
San Francisco, California • Overland Park, Kansas • Lutherville, Maryland + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 15, 2024 · Synced Jun 10, 2026, 1:39 AM EDT
Withdrawn No phase listed Observational

Correlation of Scheimpflug Densitometry Measurements of Corneal Haze With Disability Glare

NCT02244892
View directory record Official record
Conditions
Vision Disability
Interventions
Not listed
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2014
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 12, 2022 · Synced Jun 10, 2026, 1:39 AM EDT