Actively Recruiting
Performance of Two Daily Disposable Multifocal Contact Lenses
Led by CooperVision International Limited (CVIL) · Updated on 2026-04-08
35
Participants Needed
1
Research Sites
N/A
Total Duration
On this page
Sponsors
C
CooperVision International Limited (CVIL)
Lead Sponsor
U
University of California, Berkeley
Collaborating Sponsor
AI-Summary
What this Trial Is About
Researchers are evaluating two designs of daily disposable multifocal soft contact lenses in people with presbyopia. This randomized, double-masked crossover study aims to compare the performance of these lenses when worn in real-world conditions. Participants will use each lens type for about one week to help understand their visual experience with each product. Participants will wear one type of daily disposable multifocal contact lens in both eyes for a period of 5 to 7 days, then switch to the other lens type for another 5 to 7 days. The study includes two groups: one starts with Lens A (kalfilcon A) and then crosses over to Lens B (stenfilcon A), while the other group follows the opposite order. Both lenses are soft daily disposables worn for one week each. During the study, participants' subjective visual acuity will be assessed approximately four hours after lens wear to evaluate their vision quality with each lens type. The study involves a total participation time of about two weeks, with careful monitoring to compare the lenses' performance. Participants will be evaluated throughout the study to capture their visual experience and any issues during lens wear.
CONDITIONS
Brief Title
Performance of Two Daily Disposable Multifocal Contact Lenses
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Participants must be at least 18 years old.
- Participants must understand their rights and be willing to sign informed consent.
- Participants must habitually use soft contact lenses (multifocal, monovision, or sphere lenses) at least 3 days a week for the past six months.
- Participants must have a minimum reading addition of +0.75 diopters based on their spectacle prescription.
- Participants must have a spherical equivalent refractive error between +6.00 to -10.00 diopters and astigmatism no greater than -0.75 diopters in each eye.
- Participants must be able to achieve distance visual acuity of +0.10 logMAR or better in each eye.
You will not qualify if you...
- Participants with any ocular disorder that contraindicates contact lens wear.
- Participants with systemic disorders that contraindicate contact lens wear.
- Participants who are aphakic.
- Participants who have had corneal refractive surgery.
- Participants with corneal distortion from previous hard or rigid lens wear or with keratoconus.
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Your Study Journey
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
Duration - Approximately 2 weeks
Participants wear two different designs of daily disposable soft multifocal contact lenses, each for 5 to 7 days in a randomized crossover design.
2 visits (in-person)
Trial Site Locations
Total: 1 location
1
University of California, Berkeley
Berkeley, California, United States, 94720
Actively Recruiting
Research Team
J
Jose A Vega, OD,MSc,PhD
How is the study designed?
Study Type
INTERVENTIONAL
Masking
DOUBLE
Allocation
RANDOMIZED
Model
CROSSOVER
Primary Purpose
TREATMENT
Number of Arms
2
Similar Trials
Frequently Asked Questions
Have more questions? Get in touch with our team for quick support
Not the Right Trial for You?
Explore thousands of other clinical trials that might be a better match.
Sign up to get personalized trial recommendations delivered to your inbox.
Already have an account? Log in here