- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00544713
Evaluate the Safety and Efficacy of a New Artificial Tear for Use After LASIK Surgery
November 9, 2011 updated by: Allergan
This study will evaluate the safety and efficacy of a new artificial tear for the treatment of dry eye that may occur after LASIK surgery
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Study Type
Interventional
Enrollment (Actual)
228
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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California
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San Diego, California, United States
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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
Yes
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Candidate for bilateral LASIK surgery for myopia correction in the range of -1.00 to -8.00 diopters
Exclusion Criteria:
- Dry eye signs and symptoms
- Preoperative soft or rigid contact lens wear within last 7 or 30 days, respectively
- Pregnancy or planning pregnancy
- Uncontrolled systemic disease
- Use of systemic medications affecting dry eye
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: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Carboxymethylcellulose and Glycerin based artificial tear
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As directed by Investigator at the end of each study visit: 1 to 2 drops in each eye, 1 to 2 times a day up to every hour while awake
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Active Comparator: Carboxymethylcellulose based artificial tear
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As directed by Investigator at the end of each study visit: 1 to 2 drops in each eye, 1 to 2 times a day up to every hour while awake
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Post LASIK Dry Eye Symptoms as Measured by Ocular Surface Disease Index (OSDI©) Score at Day 90
Time Frame: Day 90
|
Measured on 12 domains (categories); a 5-point scale for each domain (0 = best, no dry eye symptoms, 4 = worst, constant dry eye symptoms).
Sum of the domain scores is normalized (standardized) to a severity scale of 0-100 (0 = no symptoms (best score), 100 = maximum severity (worst score)).
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Day 90
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Patient Acceptability- Percentage of Patients Who Rated Artificial Tears (AT) as Acceptable at Day 90
Time Frame: Day 90
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A questionnaire was administered to all patients to evaluate the acceptability of the Artificial Tears (referred to as AT).
Percentage of patients responding either "Agree" or "Strongly Agree" at day 90 was tabulated.
The potential response categories included "Strongly Agree", "Agree", "Neither Agree Nor Disagree", "Disagree" and "Strongly Disagree".
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Day 90
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Patient Acceptability (Sensory) - Percentage of Patients Who Rated Artificial Tears (AT) as Acceptable at Day 90
Time Frame: Day 90
|
A patient acceptability - sensory questionnaire was administered to all patients to evaluate the acceptability of the Artificial Tears (AT).
Percentage of patients responding either "Agree" or "Strongly Agree" at day 90 was tabulated.
The potential response categories included "Strongly Agree", "Agree", "Neither Agree Nor Disagree", "Disagree" and "Strongly Disagree".
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Day 90
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Best Corrected Visual Acuity (BCVA) Status at Day 90
Time Frame: Day 90
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BCVA status at Day 90 reported as the number of patients whose scores were either "Better", "No Change", or "Worse" than their scores at baseline.
The status was tabulated as number of lines read correctly at Day 90 minus the number of lines read correctly at baseline.
"Better" equals increase of 2 lines or more; "No Change" equals change between -2 to +2 lines; "Worse" equals decrease of 2 lines or more.
BCVA is measured using a special eye chart a nd is reported as the number of lines (5 letters per line) read correctly.
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Day 90
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Change From Baseline of the Worse Eye in Corneal Topography as Measured by Pentacam at Day 90
Time Frame: Baseline, Day 90
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Change from Baseline in corneal topography of the worse eye as measured using a Pentacam system which calculates a number.
Corneal topography is a non-invasive medical imaging technique for mapping the surface of the eye.
The Pentacam system measures the pupil and anterior segment (the front part of the eye) which provides a range from 10 (best) to 60 (worst).
A negative number change from baseline indicates an improvement.
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Baseline, Day 90
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Change From Baseline of the Worse Eye in Corneal Topography Measured by Humphrey Atlas at Day 90
Time Frame: Baseline, Day 90
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Change from Baseline in corneal topography of the worse eye as measured by a Humphrey Atlas system which calculates a number.
Corneal topography is anon-invasive medical imaging technique for mapping the surface curvature of the cornea (the outer structure of the eye).
The higher the number the more irregular the cornea.
A Humphrey Atlas system detects irregular conditions in the cornea with a range from 0 = best to 2.5 = worst.
A negative number change from baseline indicates an improvement.
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Baseline, Day 90
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Change From Baseline of Total Higher Order Aberration (HOA) of the Worse Eye at Day 90
Time Frame: Baseline, Day 90
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Change from Baseline in total HOA of the worse eye.
The total HOA number is measured using a machine that calculates and detects changes in the cornea which could occur post Lasik surgery.
A negative number change from baseline indicates an improvement.
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Baseline, Day 90
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Change From Baseline of the Worse Eye in Schirmer's Test at Day 90
Time Frame: Baseline, Day 90
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Change from baseline in Schirmer's Test results at Day 90 in the worse eye.
The Schirmer's Test measures the rate of the secretion of tears produced by the eye over 5 minutes.
The results indicate the presence of dry eye (Normal = greater than or equal to 15 millimeters (mm) of tears, Dry Eye = less than 15 mm of tears).
The smaller the number, the more severe the dry eye.
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Baseline, Day 90
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Change From Baseline of the Worse Eye in Corneal Staining With Fluorescein at Day 90
Time Frame: Baseline, Day 90
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Change from Baseline in corneal staining of the worse eye at Day 90.
Sum of corneal staining over 5 zones; each zone was measured on a modified Oxford Scheme (0 = no staining and 5 = severe staining), for a minimum score of 0 and a maximum score of 25.
The higher the grade score, the worse the dry eye condition.
A negative change from baseline represents a decrease in corneal staining (improvement).
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Baseline, Day 90
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Change From Baseline of the Worse Eye in Conjunctival Staining With Lissamine Green at Day 90
Time Frame: Baseline, Day 90
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Change from Baseline in conjunctival staining of the worse eye using Lissamine Green staining procedure.
Sum of conjunctival staining over 6 zones; each zone was measured on a modified Oxford Scheme (0 = no staining and 5 = severe staining), with a minimum score of 0 and a maximum score of 30.
The higher the grade score, the worse dry eye condition.
A negative number change from baseline represents a decrease in corneal staining (improvement).
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Baseline, Day 90
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Change From Baseline of the Worse Eye in Tear Break-Up Time (TBUT) at Day 90
Time Frame: Baseline, Day 90
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Change from Baseline in TBUT of the worse eye at Day 90.
TBUT is the time required for dry spots to appear on the surface of the eye after blinking.
The longer it takes, the more stable the tear film.
A short TBUT is a sign of poor tear film.
A positive number change from baseline indicates an increase in TBUT (improvement).
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Baseline, Day 90
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Change From Baseline in Study Product Usage at Day 90
Time Frame: Baseline, Day 90
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Change from baseline in the study product usage (average number of uses per day) at Day 90.
A negative number change from baseline indicates a reduction in eye drop usage (improvement).
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Baseline, Day 90
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Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Number of Patients Prescribed to Each Dosing Regimen at Day 14 and Day 60
Time Frame: Day 14, Day 60
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Number of patients prescribed to each dosing regimen at Day 14 and Day 60.
At each visit from Day 14 (the first post-operative visit) to Day 60, patients were prescribed to 1 to 4 dosing regimens based on the investigator's clinical evaluation.
Dosing schedule options were: At least every 2 hours while awake, 6 to 8 times per day, 3 to 5 times per day, at 1 to 2 times per day.
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Day 14, Day 60
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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
September 1, 2007
Primary Completion (Actual)
June 1, 2008
Study Completion (Actual)
June 1, 2008
Study Registration Dates
First Submitted
October 12, 2007
First Submitted That Met QC Criteria
October 15, 2007
First Posted (Estimate)
October 16, 2007
Study Record Updates
Last Update Posted (Estimate)
December 14, 2011
Last Update Submitted That Met QC Criteria
November 9, 2011
Last Verified
November 1, 2011
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- AG9818-001
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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