Multifocal Contact Lenses for Presbyopia

Recruiting in Palo Alto (17 mi)

Overseen byMeng C Lin, OD, Ph.D

Age: 18+

Sex: Any

Travel: May Be Covered

Time Reimbursement: Varies

Trial Phase: Academic

Recruiting

Sponsor: CooperVision International Limited (CVIL)

Disqualifiers: Ocular disorder, Systemic disorder, Aphakic, others

No Placebo Group

Trial Summary

What is the purpose of this trial?The aim of this study is to compare the overall lens satisfaction between two soft multifocal contact lenses.

Eligibility Criteria

This trial is for individuals with presbyopia (age-related difficulty focusing on close objects) and other vision issues like farsightedness or near-sightedness. Participants should be interested in trying multifocal contact lenses.

Inclusion Criteria

They have a minimum reading add of +0.75DS based on their spectacle refraction

My glasses prescription is between +6.00 and -10.00, with less than -0.75 astigmatism.

They are able to achieve distance HCVA of +0.10 logMAR or better in each eye

+3 more

Exclusion Criteria

They have an ocular disorder which would normally contra-indicate contact lens wear

They have a systemic disorder which would normally contra-indicate contact lens wear

They are aphakic

+2 more

Trial Timeline

Screening

Participants are screened for eligibility to participate in the trial

1-2 weeks

Treatment

Participants wear two different types of study contact lenses in a randomized order for 15 minutes each

1 day

1 visit (in-person)

Follow-up

Participants are monitored for overall lens satisfaction after wearing the lenses

1 day

Participant Groups

The study compares overall satisfaction between two types of soft multifocal contact lenses: Proclear® 1 Day Multifocal and Clariti® 1 Day Multifocal, each available in low, medium, and high ADD power for better close-up vision.

3Treatment groups

Experimental Treatment

Group I: omafilcon A lenses first, then medium ADD power somofilcon A lensExperimental Treatment2 Interventions

Participants will wear two different types of study contact lenses, in a randomized order of testing for the two study contact lens types.

Group II: omafilcon A lenses first, then low ADD power somofilcon A lensExperimental Treatment2 Interventions

Participants will wear two different types of study contact lenses, in a randomized order of testing for the two study contact lens types.

Group III: omafilcon A lenses first, then high ADD power somofilcon A lensExperimental Treatment2 Interventions

Participants will wear two different types of study contact lenses, in a randomized order of testing for the two study contact lens types.