Observational Study of Comfilcon A Contact Lenses

This study is looking at the safety and how well different types of comfilcon A contact lenses work in people who already wear them. These lenses include comfilcon A Sphere, Toric, Multifocal, Toric Multifocal, and Energys lenses. Researchers want to see how well your vision is (visual acuity) and if there are any problems related to the lenses after two hours of wear. You can join if you are between 8 and 75 years old and have been wearing one of these specific comfilcon A lenses for at least 12 months, even if you sometimes wear them overnight. The study aims to enroll 182 participants.

Study design
This is an observational study, meaning researchers will look at how the contact lenses perform in real-world use. It plans to include 182 participants.
What's involved
You would wear your comfilcon A contact lenses for 2 hours, after which your vision and any lens-related issues would be checked.
Compensation
Not stated in the trial record.
Follow-up
Your visual performance and any adverse events will be measured at the end of 2 hours of wear.

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NCT06902584

North American Comfilcon A Clinical Study

Recruiting
Not specifiedAges 8–75Observational
CooperVision International Limited (CVIL)
~182 participants
Updated 2025-08-27 on ClinicalTrials.gov
What's tested:comfilcon A Sphere lenscomfilcon A Toric lenscomfilcon A Multifocal lenscomfilcon A Multifocal Toric lenscomfilcon A Energys lens

At a glance

Recruiting sites
4 of 4 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Visual Performance (Visual Acuity)
Measured over At the end of 2 hours of wear
+1 more outcome measured
Astigmatism
Presbyopia
Ametropia
4 sites across 4 states
California1
Ohio1
Pennsylvania1
Texas1
  • Meng C Lin, OD, PhD · PRINCIPAL_INVESTIGATOR · University of Berkeley
  • Katherine Bickle, Dr. · PRINCIPAL_INVESTIGATOR · ProCare Vision Center
  • Abigail G Harsch, Dr. · PRINCIPAL_INVESTIGATOR · Nittany Eye Associates
  • David Browning, Dr. · PRINCIPAL_INVESTIGATOR · Drs. McIntyre, Garza, Avila and Jurica, Optometrists

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  • Visual Performance (Visual Acuity)At the end of 2 hours of wear

    Visual Performance will be measured using logMAR * High contrast, high illumination distance VA * High contrast, high illumination near VA

  • Incidence of contact lens-related adverse eventsAt the end of 2 hours of wear

    Incidence of contact lens-related adverse events will be recorded from subjects