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Dry Eye SyndromeNCT00544713

Evaluate the Safety and Efficacy of a New Artificial Tear for Use After LASIK Surgery

A study testing Carboxymethylcellulose and Glycerin based artificial tear and Carboxymethylcellulose in people with Dry Eye Syndrome, run by Allergan at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

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 Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
Conditions the study is for
Dry Eye Syndrome
What is being tested?
Carboxymethylcellulose and Glycerin based artificial tear and Carboxymethylcellulose
Could I receive a placebo?
No, everyone receives an active treatment
How many people
228 participants
Where
1 siteUnited States
Study dates
Sep 2007to Jun 2008
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Candidate for bilateral LASIK surgery for myopia correction in the range of -1.00 to -8.00 diopters

Who cannot join

  • 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

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Study site

    San Diego, California

Other trials in United States

About this study

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

Being tested
Carboxymethylcellulose and Glycerin based artificial tear, Carboxymethylcellulose
Medical subject headings
Dry Eye Syndromes

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Carboxymethylcellulose and Glycerin based artificial tearDrug

    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

  • CarboxymethylcelluloseDrug

    Also called Refresh Plus®

    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

Study groups in NCT00544713
Study groupRoleWhat they receive
Carboxymethylcellulose and Glycerin based artificial tearExperimentalCarboxymethylcellulose and Glycerin based artificial tear
Receives: Drug: Carboxymethylcellulose and Glycerin based artificial tear
Carboxymethylcellulose based artificial tearActive comparatorCarboxymethylcellulose based artificial tear
Receives: Drug: Carboxymethylcellulose

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Post LASIK Dry Eye Symptoms as Measured by Ocular Surface Disease Index (OSDI©) Score at 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)).

    Measured: Day 90

Secondary outcomes (11)
  1. Patient Acceptability- Percentage of Patients Who Rated Artificial Tears (AT) as Acceptable at Day 90

    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".

    Measured: Day 90

  2. Patient Acceptability (Sensory) - Percentage of Patients Who Rated Artificial Tears (AT) as Acceptable at 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".

    Measured: Day 90

  3. Best Corrected Visual Acuity (BCVA) Status at Day 90

    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.

    Measured: Day 90

  4. Change From Baseline of the Worse Eye in Corneal Topography as Measured by Pentacam at Day 90

    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.

    Measured: Baseline, Day 90

  5. Change From Baseline of the Worse Eye in Corneal Topography Measured by Humphrey Atlas at Day 90

    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.

    Measured: Baseline, Day 90

  6. Change From Baseline of Total Higher Order Aberration (HOA) of the Worse Eye at Day 90

    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.

    Measured: Baseline, Day 90

  7. Change From Baseline of the Worse Eye in Schirmer's Test at Day 90

    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.

    Measured: Baseline, Day 90

  8. Change From Baseline of the Worse Eye in Corneal Staining With Fluorescein at Day 90

    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).

    Measured: Baseline, Day 90

  9. Change From Baseline of the Worse Eye in Conjunctival Staining With Lissamine Green at Day 90

    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).

    Measured: Baseline, Day 90

  10. Change From Baseline of the Worse Eye in Tear Break-Up Time (TBUT) at Day 90

    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).

    Measured: Baseline, Day 90

  11. Change From Baseline in Study Product Usage at Day 90

    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).

    Measured: Baseline, Day 90

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted16 Oct 2007 (estimated)
  2. Study startSep 2007
  3. Primary completionJun 2008
  4. Study completionJun 2008

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
228 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00544713
Sponsor's protocol ID
AG9818-001
Status last verified
Nov 2011
First submitted
12 Oct 2007
Last updated
14 Dec 2011
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

A study testing Carboxymethylcellulose and Glycerin based artificial tear and Carboxymethylcellulose in people with Dry Eye Syndrome, run by Allergan at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 14 Dec 2011. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 14 Dec 2011). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Post LASIK Dry Eye Symptoms as Measured by Ocular Surface Disease Index (OSDI©) Score at Day 90 (time frame: Day 90). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 14 Dec 2011.

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