- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01220466
Performance and Acceptability of iDesign
May 16, 2013 updated by: Abbott Medical Optics
A Prospective Study to Evaluate the Performance and Acceptability of the iDesign Advanced WaveScan Study(tm) System
The results of this trial will demonstrate that the iDesign System performs as intended and is acceptable in a clinical setting.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
LASIK treatment across the range of myopia with or without astigmatism, hyperopia with or without astigmatism, and mixed astigmatism.
Study Type
Interventional
Enrollment (Actual)
77
Phase
- Not Applicable
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
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British Columbia
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Victoria, British Columbia, Canada, V8X 1X2
- Clearly LASIK
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Manitoba
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Winnipeg, Manitoba, Canada, R3C 3J5
- Image Plus Laser Eye Center
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Ontario
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Ottawa, Ontario, Canada, K1H 8L6
- University of Ottawa Eye Institute, The Ottawa Hospital
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Toronto, Ontario, Canada, M4P 2E5
- Yonge-Eglington Laser
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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
18 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Male or female, of any race, and at least 18 years old at the time the consent form is signed.
- The refractive error, based on manifest refraction (adjusted for optical infinity), must be MRSE up to -15.00 D with manifest cylinder between 0.00 and -6.00 D; MRSE up to +9.00 D with cylinder between 0.00 and +6.00 D; or manifest cylinder (from 1.00 to 6.00 D) greater than the magnitude of sphere, and the cylinder and sphere have opposite signs.
- BSCVA of 20/20 or better.
UCVA:
- Myopes must be 20/40 or worse.
- Subjects with Hyperopia or mixed astigmatism, treatment may be based on difficulty maintaining UCVA of 20/40 evidenced by spectacle/contact lens dependence for distance, as documented by the investigator.
- Wavefront diameter ≥ 4.0 mm.
- Sufficient agreement between manifest refraction (adjusted for optical infinity) and iDesign System refraction (sphere, cylinder, and axis) to allow treatment selection and generation of an ablation profile as determined by the investigational iDesign System software.
- Manifest refraction sphere within ± 0.75 D of cycloplegic refraction sphere.
- Anticipated post-operative stromal bed thickness of at least 250 microns, based on pre-operative central corneal pachymetry minus the maximum treatment depth to be ablated (as calculated by the iDesign System) and the intended flap thickness.
- Anticipated post-operative keratometry value (based on pre-operative iDesign System refraction and keratometry) that is appropriate.
- A stable refractive error (based on a previous exam, medical records, or prescription) as compared to the unadjusted pre-operative manifest refraction.
- Subjects who currently wear contact lenses must demonstrate refractive stability in the operative eye. Rigid or toric lenses must be removed for at least 2 weeks and SCL for at least 3 days prior to the first refraction used to establish stability. A second refraction with a change of no more than ± 0.50 D MRSE at least 7 days after baseline.
- Willing and capable of returning for follow-up examinations for the duration of the study.
Exclusion Criteria:
- Women who are pregnant, breast-feeding, or intend to become pregnant over the course of the study, as determined by verbal inquiry, or another condition associated with the fluctuation of hormones that could lead to refractive changes.
- Subjects with an ametropic or amblyopic fellow eye not meeting all inclusion criteria that does not fall within the indications for treatment using the VISX® STAR S4 IR™ Excimer Laser.
- Concurrent use of systemic (including inhaled) medications that may impair healing, including but not limited to: steroids, antimetabolites, isotretinoin (Accutane™) within 6 months of treatment, and amiodarone hydrochloride (Cordarone™) within 12 months of treatment.
- Acute or chronic disease, illness, or treatment that would increase the operative risk (e.g., immuno-compromised, autoimmune disease, connective tissue disease, clinically significant atopic disease, diabetes, etc.).
- Subjects with a cardiac pacemaker, implanted defibrillator, implanted neurostimulator, or any active electrical implants.
- Ocular condition (other than high myopia) that may predispose the subject to future complications, such as history or evidence of active or inactive corneal disease
- Previous intraocular or corneal surgery that might confound the outcome of the study or increase risk to the subject.
- Known sensitivity or inappropriate responsiveness to any of the medications used in the post-operative course.
- Concurrent participation in any other clinical 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: Non-Randomized
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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Experimental: Refractive Error
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CustomVue LASIK targeted for emmetropia
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Percentage of Eyes With Uncorrected Visual Acuity (UCVA) of 20/40 or Better.
Time Frame: 6 months
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6 months
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Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Percentage of Eyes With Loss of More Than 2 Lines Best Spectacle Corrected Visual Acuity (BSCVA)
Time Frame: 6 Months
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6 Months
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Percentage of Eyes With Manifest Refraction Spherical Equivalent Within 1.0 D
Time Frame: 6 months
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6 months
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Percentage of Eyes With Best Spectacle Corrected Visual Acuity (BSCVA) Worse Than 20/40
Time Frame: 6 Months
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6 Months
|
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Percentage of Eyes With Induced Manifest Refractive Astigmatism Greater Than 2.00 D of Absolute Cylinder as Compared to the Preoperative Refraction
Time Frame: 6 Months
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Induced Manifest Refractive Astigmatism is an increase of astigmatism (cylinder) postoperatively that could be caused by the refractive treatment.
An increase of greater than 2.0 D is considered a safety endpoint per ANSI Z80.11-2007.
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6 Months
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
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, 2010
Primary Completion (Actual)
June 1, 2011
Study Completion (Actual)
December 1, 2011
Study Registration Dates
First Submitted
September 24, 2010
First Submitted That Met QC Criteria
October 12, 2010
First Posted (Estimate)
October 14, 2010
Study Record Updates
Last Update Posted (Estimate)
May 20, 2013
Last Update Submitted That Met QC Criteria
May 16, 2013
Last Verified
May 1, 2013
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- STAR-108-IDSN
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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