Contact Lens Adaptation in Neophytes (CLAN)

September 19, 2022 updated by: Andrew Pucker, Ohio State University
Eye care professionals prescribe contact lenses to new wearers on a daily basis, and it is common practice for practitioners to educate their patients to gradually increase their contact lens wear time over their first few days of use; however, there is no scientific basis in the literature for this practice. This study will compare the ocular health and comfort of new contact lens wearers who are randomly assigned to begin contact lens wear with increasing wearing time versus those who immediately start full-time wear (eight hours or more/day). The increasing wearing time group will wear daily wear contact lenses (Acuvue Oasys) for two, four, six, eight, and eight or more hours on the first, second, third, fourth, and fifth days, respectively. The other group will be instructed to wear the same contact lenses for eight or more hours per day, starting with the first day of wear. Both groups of subjects will have their eye health and comfort evaluated at baseline, one, and two weeks with a lighted-microscope and eye comfort surveys. Subjects will also keep a daily log of eye comfort with a visual analog scale survey at home. All subjects will learn how to wear and take care of contact lenses. They will also receive a prescription for contact lenses at the conclusion if they wish to continue wearing the study contact lenses.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

25

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

  • United States
    • Ohio
      • Columbus, Ohio, United States, 43210
        • The Ohio State University

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

8 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Has had a completed comprehensive eye exam within the past 6 months
  • Able to wear spherical senofilcon A contact lenses
  • Able to use Opti-Free PureMoist contact lens solution

Exclusion Criteria:

  • Any prior contact lens use
  • Topical eye drops within the last two hours of the study visit
  • Known systemic health conditions known to alter tear film physiology
  • History of severe ocular trauma
  • Active ocular infection
  • Active ocular inflammation
  • Known hypersensitivity to diagnostic eye drops
  • Pregnant or breast feeding

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: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Full-Time Senofilcon A Contact Lens Wear
This group will start wearing contact lenses 8 or more hours per day on the first day of wear
Device: senofilcon A
Other Names:
  • Acuvue Oasys
Experimental: Graduated Senofilcon A Contact Lens Wear
This group will start wearing contact lenses on a graduated schedule (day 1 = 2 hours, day 2 = 4 hours, day 3 = 6 hours, day 4 = 8 hours, day 5 = 8 or more hours).
Device: senofilcon A
Other Names:
  • Acuvue Oasys

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Between-Group Difference in Eye Comfort as Measured by the Ocular Surface Disease Index (OSDI)
Time Frame: 2 weeks
This is an eye comfort survey. The Ocular Surface Disease Index (OSDI) is assessed on a scale of 0 to 100, with higher scores representing greater disability. The index demonstrates sensitivity and specificity in distinguishing between normal subjects and patients with dry eye disease. The OSDI is a valid and reliable instrument for measuring dry eye disease (normal, mild to moderate, and severe) and effect on vision-related function.
2 weeks

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Between-Group Difference in Visual Acuity as Measured With the Bailey-Lovie Chart
Time Frame: 2 weeks
The investigator will measure the subject's visual acuity with a Bailey-Lovie high-contrast paper (logMAR) chart. logMAR is a method used to observe visual acuity. Smaller numbers are better scores.
2 weeks
Between-Group Difference in Tear Stability as Measured by Non-Invasive Break Up Time (NIBUT)
Time Frame: 2 Weeks
Non-Invasive Break Up Time (NIBUT) is a measure of tear stability. The range is 0 to 60 seconds with longer times being better tear stability.
2 Weeks
Between-Group Difference in Tear Volume as Measured by Tear Meniscus Height (TMH)
Time Frame: 2 Weeks
Tear Meniscus Height (TMH) was used at a measure of tear volume. The range is 0.0 to 2.0 mm with higher values being more tear volume.
2 Weeks
Between-Group Difference in Bulbar Conjunctival Redness as Measured With the Keratograph 5M
Time Frame: 2 Weeks
Eye redness was measured via bulbar conjunctival redness as measured with the Keratograph 5M. The range is 0 to 4 units with lower numbers being better.
2 Weeks
Between-Group Difference in Upper and Lower Eyelid Blepharitis
Time Frame: 2 Weeks
A slit-lamp biomicroscope was used to document eyelid blepharitis with a 0-3 scale by each eyelid with higher scores being worse blepharitis.
2 Weeks
Between-Group Difference in Corneal Sodium Fluorescein Staining
Time Frame: 2 Weeks
The Brien Holden Vision Institute grading scale was used to evaluate staining by observing the eye after applying sodium fluorescein. Scores were given for the extent (0-20 units), depth (0-20 units), type (0-20 units) of staining. Higher scores indicate worse staining.
2 Weeks
Between-Group Difference in Tear Volume as Measured by Schirmer's Test I
Time Frame: 2 Weeks
Tear volume was assessed with Schirmer's Test I test over 5 mins. This test has a 0-35 mm range with higher values being better tear volume.
2 Weeks
Between-Group Difference in End of Day Contact Lens Comfort as Measured With a Visual Analog Scale (VAS)
Time Frame: 2 Weeks
End of day contact lens comfort was measured with a visual analog scale (1-100 scale). Higher scores indicate better comfort.
2 Weeks
Between-Group Difference in Contact Lens Dry Eye-8 Questionnaire (CLDEQ-8) Scores
Time Frame: 2-Weeks
Contact lens comfort was measured with a scale (1-37 scale). Lower scores indicate better comfort.
2-Weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Ohio State University

Collaborators

National Eye Institute (NEI)
National Institutes of Health (NIH)

Investigators

  • Principal Investigator: Andrew D Pucker, OD, MS, Ohio State University
  • Principal Investigator: Jeffrey J Walline, OD, PhD, Ohio State University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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 (Actual)

May 1, 2014

Primary Completion (Actual)

August 20, 2019

Study Completion (Actual)

September 3, 2019

Study Registration Dates

First Submitted

May 21, 2014

First Submitted That Met QC Criteria

May 22, 2014

First Posted (Estimate)

May 28, 2014

Study Record Updates

Last Update Posted (Actual)

September 29, 2022

Last Update Submitted That Met QC Criteria

September 19, 2022

Last Verified

September 1, 2022

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 2014H0074
  • K08EY023264 (U.S. NIH Grant/Contract)

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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