Skip to main content
OpenTrials
Completed

NCT Number: NCT02148263

Contact Lens Adaptation in Neophytes

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.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Contact Lens Comfort

Age range

8 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

The Ohio State University

Columbus, Ohio, 43210, United States

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Senofilcon A

Device

Other names: Acuvue Oasys

Primary outcomes

  1. 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.

Secondary outcomes

  1. 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. 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.

  3. 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.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

Sponsors and collaborators

Lead sponsor

Ohio State University

Other

Collaborators

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

Registry information

Acronym: CLAN

Important dates

Study start
2014
Primary completion
2019
Study completion
2019
First posted
May 28, 2014
Registry last updated
Sep 29, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.