Comparison of two types of multifocal contact lenses
A Clinical Comparison of Two Soft Multifocal Contact Lenses - Proclear® 1 Day Multifocal and Clariti® 1 Day Multifocal 3 Add
This study tests which of two types of multifocal contact lenses is more comfortable and effective for people with vision issues like nearsightedness, farsightedness, or age-related vision changes after wearing them for just 15 minutes.
Quick facts
| Phase | Not applicable |
|---|---|
| Study type | Interventional |
| Enrollment | 66 (estimated) |
| Ages | 18 Years and up |
| Sex | All |
| Sponsor | CooperVision International Limited (CVIL) Industry-sponsored |
| Locations | 1 site (Berkeley, California) |
| Trial ID | NCT06869044 on ClinicalTrials.gov |
What this trial studies
This study evaluates the overall satisfaction of users with two different soft multifocal contact lenses after 15 minutes of daily wear. Participants will wear the Proclear® 1 Day Multifocal and Clariti® 1 Day Multifocal lenses to assess their comfort and effectiveness. The study aims to determine which lens provides better visual performance and user satisfaction among individuals with myopia, hyperopia, and presbyopia. The findings could help inform better choices for patients requiring multifocal vision correction.
Who should consider this trial
Good fit: Ideal candidates are adults aged 18 and older who have been using soft contact lenses for at least three months and have specific refractive errors.
Not a fit: Patients with ocular or systemic disorders that contraindicate contact lens wear will not benefit from this study.
Why it matters
Potential benefit: If successful, this study could help patients select the most comfortable and effective multifocal contact lenses for their vision needs.
How similar studies have performed: Previous studies comparing multifocal contact lenses have shown varying degrees of success, indicating that this approach is relevant but not entirely novel.
Eligibility criteria
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. They are at least 18 years of age. 2. They understand their rights as a research subject and are willing and able to sign a Statement of Informed Consent. 3. They habitually use soft contact lenses (multifocal soft contact lenses, sphere lenses for monovision, sphere lenses for distance vision correction and spectacles for near vision correction,) and have done so for at least the past three months. 4. They have a minimum reading add of +0.75DS (based on their spectacle refraction) 5. They have spherical equivalent refractive error between +6.00 to -10.00DS at the corneal plane and refractive astigmatism of no greater than -0.75DC in each eye. 6. They are able to achieve distance HCVA of +0.10 logMAR or better in each eye. Exclusion Criteria: 1. They have an ocular disorder which would normally contra-indicate contact lens wear. 2. They have a systemic disorder which would normally contra-indicate contact lens wear. 3. They are aphakic. 4. They have had corneal refractive surgery. 5. They have any corneal distortion resulting from previous hard or rigid lens wear or have keratoconus.
Where this trial is running
Berkeley, California
- University of California, Berkeley, CA — Berkeley, California, United States (Recruiting)
Study contacts
- Principal investigator: Meng C Lin, OD, Ph.D — UC Berkeley
- Study coordinator: Jose Vega, OD MSc, PhD
- Email: JVega@coopervision.com
- Phone: 01-925-640-2964
How to participate
- Review the eligibility criteria above with your treating physician.
- Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
- Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.