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Showing 25–43 of 19 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Contrast Sensitivity Clear all
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 Sep 7, 2026, 8:20 PM 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Withdrawn No phase listed Observational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 Sep 7, 2026, 8:20 PM EDT
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 Sep 7, 2026, 8:20 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Topical ASP-1001 (Contrast Media Formulation) and the Acute Response to Nasal Allergen Challenge (NAC)

NCT00791102
View directory record Official record
Conditions
Allergic Rhinitis
Interventions
ASP-1001 nasal spray, Placebo for ASP-1001
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Days to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 9, 2013 · Synced Sep 7, 2026, 8:20 PM EDT
Withdrawn Phase 4 Interventional

Augmented Macular Pigment-containing Nutraceutical and Central Visual Function

NCT04676126
View directory record Official record
Conditions
Glaucoma, Glaucoma Eye, Glaucoma, Open-Angle
Interventions
Lumega-Z, Dorzolamide Hcl 2% Oph Soln, Placebo
Dietary Supplement · Drug · Other
Lead sponsor
University of the Incarnate Word
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Oct 3, 2022 · Synced Sep 7, 2026, 8:20 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Impact of Glistenings in AcrySof Intraocular Lenses on Visual Quality

NCT01202981
View directory record Official record
Conditions
Lenses, Intraocular, Glistenings, Visual Quality
Interventions
Not listed
Lead sponsor
University of Utah
Other
Eligibility
Not listed
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Dec 10, 2014 · Synced Sep 7, 2026, 8:20 PM 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 Sep 7, 2026, 8:20 PM 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 Sep 7, 2026, 8:20 PM EDT
Completed Phase 4 Interventional Results available

Performance Assessment Tests in Working Individuals With DME Following Treatment With Ranibizumab

NCT02107131
View directory record Official record
Conditions
Diabetic Macular Edema
Interventions
Intravitreal ranibizumab 0.3mg
Drug
Lead sponsor
California Retina Consultants
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
6
States / cities
Bakersfield, California • Oxnard, California • Palmdale, California + 3 more
Source: ClinicalTrials.gov public record
Updated Dec 18, 2018 · Synced Sep 7, 2026, 8:20 PM EDT
Recruiting Not applicable Interventional

Contoura With Phorcides Compared to Wavefront Optimized LASIK

NCT05486546
View directory record Official record
Conditions
Myopia, Astigmatism
Interventions
Contoura with Phorcides, WaveLight Wavefront Optimized
Procedure · Device
Lead sponsor
Daniel Terveen
Other
Eligibility
21 Years to 38 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
4
States / cities
Bozeman, Montana • Omaha, Nebraska • Fargo, North Dakota + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 25, 2023 · Synced Sep 7, 2026, 8:20 PM 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 Sep 7, 2026, 8:20 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Visual Outcomes and Contrast Sensitivity After Myopic LASIK

NCT01746589
View directory record Official record
Conditions
Myopia
Interventions
bilateral myopic LASIK
Device
Lead sponsor
Daniel S. Durrie, MD
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Jan 27, 2013 · Synced Sep 7, 2026, 8:20 PM 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 Sep 7, 2026, 8:20 PM 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 Sep 7, 2026, 8:20 PM 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 Sep 7, 2026, 8:20 PM 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 Sep 7, 2026, 8:20 PM 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 Sep 7, 2026, 8:20 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Test-Retest Variability of Quick Contrast Sensitivity Function Testing

NCT02177669
View directory record Official record
Conditions
Healthy
Interventions
quick Contrast Sensitivity Function test
Other
Lead sponsor
Nova Southeastern University
Other
Eligibility
20 Years to 89 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Fort Lauderdale, Florida
Source: ClinicalTrials.gov public record
Updated Apr 10, 2017 · Synced Sep 7, 2026, 8:20 PM 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 Sep 7, 2026, 8:20 PM EDT