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Showing 25–39 of 15 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Correction of Refraction Error Clear all
Completed No phase listed Observational Accepts healthy volunteers

Proof of Concept Study for First-Sight Refractive Error Correction: Direct Comparison to Manifest Refraction and Autorefraction Results

NCT01342393
View directory record Official record
Conditions
Refractive Error
Interventions
Not listed
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Jan 10, 2012 · Synced Sep 4, 2026, 7:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Prospective Comparison of Alcon LADARVision Wavefront-guided LASIK Enhancement and Conventional LASIK Enhancement for the Correction of Residual Refractive Errors Following LASIK Procedures

NCT00413881
View directory record Official record
Conditions
Refractive Errors
Interventions
WAVEFRONT- GUIDED LASIK ENHANCEMENT, CONVENTIONAL LASIK ENHANCEMENT
Procedure
Lead sponsor
Walter Reed Army Medical Center
Federal
Eligibility
21 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2008
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jan 13, 2010 · Synced Sep 4, 2026, 7:34 AM EDT
Completed No phase listed Observational Results available

Observational Study of Optical Correction for Strabismic Amblyopia in Children 3 to <7 Years Old

NCT00669539
View directory record Official record
Conditions
Amblyopia
Interventions
Not listed
Lead sponsor
Jaeb Center for Health Research
Other
Eligibility
3 Years to 6 Years
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Fullerton, California
Source: ClinicalTrials.gov public record
Updated Jul 12, 2016 · Synced Sep 4, 2026, 7:34 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Study to Evaluate the Clinical Performance of SynergEyes A2 Hybrid Contact Lenses

NCT01058629
View directory record Official record
Conditions
Refractive Errors, Astigmatism
Interventions
SynergEyes A2 Hybrid Contact Lens
Device
Lead sponsor
SynergEyes, Inc.
Industry
Eligibility
18 Years and older
Enrollment
125 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
10
States / cities
Campbell, California • Carlsbad, California • Encino, California + 7 more
Source: ClinicalTrials.gov public record
Updated Aug 24, 2010 · Synced Sep 4, 2026, 7:34 AM EDT
Completed Not applicable Interventional Results available

Clinical Performance of a Silicone Hydrogel Contact Lens Following Six Nights of Extended Wear

NCT03614130
View directory record Official record
Conditions
Refractive Errors
Interventions
LID011121 contact lens, Comfilcon A contact lens
Device
Lead sponsor
Alcon Research
Industry
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
2
States / cities
Johns Creek, Georgia • Brentwood, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 29, 2021 · Synced Sep 4, 2026, 7:34 AM EDT
Completed Phase 3 Interventional

Correction of Myopia Evaluation Trial (COMET)

NCT00000113
View directory record Official record
Conditions
Myopia
Interventions
Progressive Addition Lenses, single vision lenses
Other
Lead sponsor
Stony Brook University
Other
Eligibility
6 Years to 12 Years
Enrollment
469 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2013
U.S. locations
4
States / cities
Birmingham, Alabama • Boston, Massachusetts • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2016 · Synced Sep 4, 2026, 7:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study of the MEL 80 Excimer Laser Using LASIK in the Treatment of Mixed Astigmatism

NCT00761826
View directory record Official record
Conditions
Mixed Astigmatism
Interventions
MEL 80 Mixed Astigmatism Treatment
Device
Lead sponsor
Carl Zeiss Meditec, Inc.
Industry
Eligibility
18 Years and older
Enrollment
126 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
5
States / cities
San Diego, California • Greenwood Village, Colorado • Kansas City, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 18, 2018 · Synced Sep 4, 2026, 7:34 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Multi Laser Platform Comparison Study for LASIK

NCT00770094
View directory record Official record
Conditions
Myopia, Astigmatism
Interventions
Excimer Lasers, Excimer Laser for the LASIK procedure, Excimer Laser for LASIK
Device
Lead sponsor
Durrie Vision
Other
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
3
States / cities
Atlanta, Georgia • Edina, Minnesota • McLean, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 5, 2009 · Synced Sep 4, 2026, 7:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Safety and Effectiveness Study of the MEL 80 Excimer Laser Using LASIK in the Treatment of Hyperopia

NCT00762281
View directory record Official record
Conditions
Hyperopia
Interventions
MEL 80 Hyperopic LASIK Treatment
Device
Lead sponsor
Carl Zeiss Meditec, Inc.
Industry
Eligibility
21 Years and older
Enrollment
189 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2008
U.S. locations
6
States / cities
San Diego, California • Greenwood Village, Colorado • Kansas City, Missouri + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 12, 2012 · Synced Sep 4, 2026, 7:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Safety and Effectiveness of Wavefront-Guided LASIK Correction of Hyperopic Refractive Errors

NCT01675479
View directory record Official record
Conditions
Hyperopia
Interventions
LASIK correction of hyperopic refractive errors
Device
Lead sponsor
Abbott Medical Optics
Industry
Eligibility
18 Years and older
Enrollment
167 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
9
States / cities
Los Angeles, California • Miami, Florida • Chicago, Illinois + 6 more
Source: ClinicalTrials.gov public record
Updated Dec 14, 2021 · Synced Sep 4, 2026, 7:34 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

A 6 Month Study to Evaluate the Safety, Analgesic Efficacy of ACUVAIL™ (Ketorolac Tromethamine Ophthalmic Solution) 0.45%, in Post-PRK Corneal Wound Healing

NCT01193231
View directory record Official record
Conditions
Must be PRK Candidate
Interventions
Not listed
Lead sponsor
Durrie Vision
Other
Eligibility
18 Years to 39 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Feb 13, 2012 · Synced Sep 4, 2026, 7:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Correction of Farsightedness in Children Study

NCT00472212
View directory record Official record
Conditions
Hyperopia, Farsightedness
Interventions
Spectacles, Control
Device
Lead sponsor
Ohio State University
Other
Eligibility
6 Years to 11 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2008
U.S. locations
4
States / cities
Chicago, Illinois • New York, New York • Columbus, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 17, 2023 · Synced Sep 4, 2026, 7:34 AM EDT
Not listed Not applicable Interventional

Astigmatism Management With Iris-registration Guided Corneal Relaxing Incisions or Toric IOLs During Cataract Surgery

NCT05561296
View directory record Official record
Conditions
Astigmatism, Cataract
Interventions
Femtosecond laser assisted cataract surgery with astigmatism management
Procedure
Lead sponsor
Kenneth J Rosenthal
Other
Eligibility
18 Years to 95 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 29, 2022 · Synced Sep 4, 2026, 7:34 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

First-Sight Refractive Error Correction: Direct Comparison to Autorefraction Results in Children 7 to 18 Years of Age

NCT01365884
View directory record Official record
Conditions
Refractive Error
Interventions
Not listed
Lead sponsor
University of Nebraska
Other
Eligibility
7 Years to 18 Years
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Aug 27, 2023 · Synced Sep 4, 2026, 7:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study of the MEL 80 Excimer Laser Using LASIK in the Treatment of Moderate to High Myopia

NCT00762541
View directory record Official record
Conditions
Myopia
Interventions
MEL 80 Treatment of High Myopia
Device
Lead sponsor
Carl Zeiss Meditec, Inc.
Industry
Eligibility
18 Years and older
Enrollment
129 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2009
U.S. locations
5
States / cities
San Diego, California • Greenwood Village, Colorado • Kansas City, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 18, 2018 · Synced Sep 4, 2026, 7:34 AM EDT