- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01028378
Safety and Efficacy Study of Topography-Guided LASIK to Treat Myopia and Hyperopia
March 18, 2016 updated by: Clinical Research Consultants, Inc.
Topography-Guided LASIK Using the ALLEGRETTO WAVE Eye-Q 400 Hz Excimer Laser System For the Treatment of Manifest and Cornea Based Myopic and Hyperopic Optical Errors
This purpose of this study is to evaluate the safety and effectiveness of a topography-based custom ablation treatment using the ALLEGRETTO WAVE® Eye-Q 400 Hz laser system for treating myopia and hyperopia.
Study Overview
Status
Completed
Intervention / Treatment
Study Type
Interventional
Enrollment (Actual)
212
Phase
- Phase 3
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
California
-
La Quinta, California, United States, 92253
- Milauskas Eye Institute
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San Diego, California, United States, 92122
- Gordon & Weiss Vision Institute
-
-
Georgia
-
Atlanta, Georgia, United States, 30328
- Woolfson Eye Institute
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Atlanta, Georgia, United States, 30342
- Emory Vision
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-
Illinois
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Peoria, Illinois, United States, 61614
- Bond Eye Associates
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-
Kansas
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Overland Park, Kansas, United States, 66211
- Durrie Vision
-
-
North Carolina
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Greensboro, North Carolina, United States, 27410
- TLC Laser Eye Center
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Pennsylvania
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Harrisburg, Pennsylvania, United States, 17112
- Memorial Eye Institute
-
-
Texas
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Houston, Texas, United States, 77027
- Laser Vision of Texas
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Houston, Texas, United States, 77079
- International Eye Care Laser Center
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-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
16 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- 18 years of age or older;
- Signed Informed Consent;
- Willingness and ability to comply with schedule for follow-up visits;
- be a candidate for topography guided LASIK treatment of myopia or hyperopia in both eyes based on your doctors examination of your eyes;
- Intended treatment is targeted for emmetropia;
- Stable refraction (0.5 D or less change in manifest refraction spherical equivalent (MRSE) per year) for 12 months or longer, based on previous clinical records or prescription history (e.g., old glasses/contact lens prescriptions).
- Able to obtain a reliable corneal topography that can be used to determine the T-CAT treatment plan;
- Best spectacle-corrected visual acuity (BSCVA) 20/25 or better in each eye;
- Less than 0.75 D spherical equivalent (SE) difference between cycloplegic and manifest refractions.
- Is not a contact lens wearer or, if wearing contact lenses, has discontinued wearing contact lenses for the required period of time and completed the contact lens stability check;
- be able to maintain your eye position steady during the course of the treatment.
Exclusion Criteria:
- History of prior refractive treatment;
- Mixed astigmatism refractive error;
- Lenticular astigmatism that, in the investigator's opinion, is clinically significant;
- Corneal topography showing evidence of keratoconus, keratoconus suspect, forme fruste keratoconus, pellucid marginal degeneration, or other topographic abnormality that would place the eye at risk for developing post-refractive corneal ectasia;
- Treatment plan for T-CAT would predict a residual stromal bed thickness less than 250 microns;
- History or current evidence of corneal or other anterior segment disease that might reasonably be expected to affect the outcome of treatment (e.g., herpes simplex keratitis, herpes zoster keratitis, recurrent erosion syndrome, corneal melt, corneal dystrophy, etc.);
- Evidence of retinal vascular disease;
- Female patients who are pregnant or lactating or plan to become pregnant during the course of the study;
- A known sensitivity to study medications;
- Nystagmus or any other condition that would prevent a steady gaze during the LASIK treatment or other diagnostic tests;
- Corneal dystrophy or corneal guttae;
- Pathology involving the iris (e.g., coloboma, tears, cuts, significant pigment loss, etc.);
- Residual, recurrent or active ocular pathology;
- Previous intraocular or corneal surgery that might confound the outcome or increase the risk of the study;
- Acute or chronic illness that might increase the risk or confound the outcome of the study (e.g., diagnosed autoimmune disease, systemic connective tissue disease, clinically significant atopic disease, diabetes mellitus, etc.)
- The use of systemic medications that may confound the outcome or increase the risk of the study, including, but not limited to: corticosteroids and antimetabolites;
- Intraocular pressure > 23 mm Hg, a history of glaucoma, or a glaucoma suspect;
- An increased risk for developing strabismus after treatment (applicable only to treatment of hyperopic refractive errors);
- Presence or history of any other condition or finding that, in the investigator's opinion, makes the patient unsuitable as a candidate for LASIK or study participation or may confound the outcome of the study.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Topography-guided LASIK
Topography-guided LASIK for Myopia or Hyperopia
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Percentage of Eyes With Manifest Refraction Spherical Equivalent (MRSE) +/- 0.50 D
Time Frame: 12 month
|
12 month
|
Percentage of Eyes With Manifest Refraction Spherical Equivalent (MRSE) +/- 1.00 D
Time Frame: 12 month
|
12 month
|
Percentage of Eyes With Manifest Refraction Spherical Equivalent (MRSE) +/- 2.00 D
Time Frame: 12 month
|
12 month
|
Percentage of Eyes With Uncorrected Visual Acuity (UCVA) 20/20 or Better
Time Frame: 12 month
|
12 month
|
Percentage of Eyes With UCVA 20/40 or Better if BSCVA 20/20 or Better Preoperatively
Time Frame: 12 month
|
12 month
|
Percentage of Eyes With Loss of 2 or More Lines Best Spectacle-Corrected Visual Acuity (BSCVA)
Time Frame: 12 month
|
12 month
|
Percentage of Eyes With Best Spectacle-Corrected Visual Acuity (BSCVA) Worse Than 20/40
Time Frame: 12 month
|
12 month
|
Percentage of Eyes With an Increase > 2D Cylinder (Spherical Only)
Time Frame: 12 month
|
12 month
|
Percentage of Eyes With Best Spectacle-corrected Visual Acuity (BSCVA) Worse Than 20/40 if 20/20 or Better Preoperatively
Time Frame: 12 month
|
12 month
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Study Director: Doyle Stulting, M.D., Ph.D., Woolfson Eye Institute/Medical Monitor
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
October 1, 2009
Primary Completion (Actual)
April 1, 2012
Study Registration Dates
First Submitted
December 7, 2009
First Submitted That Met QC Criteria
December 8, 2009
First Posted (Estimate)
December 9, 2009
Study Record Updates
Last Update Posted (Estimate)
April 11, 2016
Last Update Submitted That Met QC Criteria
March 18, 2016
Last Verified
March 1, 2016
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- T-CAT-001
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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