Clinical Validation Study of Comfilcon A Multifocal Toric Contact Lenses

Completed · Not applicable

Conditions studied: Presbyopia

In brief

This is a study to evaluate the clinical performance and subjective acceptance of an investigational contact lens (test), compared to a marketed lens (control) in an in-office setting.

Key facts

Study ID

NCT03417557

Run by

CooperVision, Inc.

People needed

20

Starts

2018-01-12

Expected to finish

2018-04-03

Last updated by the study team

2020-05-04

Who can join

Age: 40 and older, up to 75. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Has had a self-reported oculo-visual examination in the last two years.
• Is between ages 40-75 years, inclusive and has full legal capacity to volunteer.
• Has read and understood the information consent letter. Is willing and able to follow instructions and maintain the appointment schedule.
• Is able to participate in Parts A and B related to this work.
• Has a contact lens spherical prescription between +10.00 to 10.00D (inclusive).
• Has an Add component to their spectacle refraction (between +0.75 and +2.50DS).
• Has astigmatism between of -0.75 and -5.75DC (based on the calculated ocular refraction) in each eye.
• Is correctable to a visual acuity of 20/40 or better (in each eye) with their habitual vision correction or 20/25 best-corrected.
• Currently wears soft contact lenses.
• Has clear corneas and no active ocular disease.
• Has not worn lenses for at least 12 hours before the examination.

You may not qualify if…

• A person will be excluded from the study if he/she:
• Has never worn contact lenses before.
• Has any systemic disease affecting ocular health.
• Is using any systemic or topical medications that will affect ocular health.
• Has any ocular pathology or severe insufficiency of lacrimal secretion (moderate to severe dry eyes) that would affect the wearing of contact lenses.
• Has persistent, clinically significant corneal or conjunctival staining using sodium fluorescein dye.
• Has any clinically significant lid or conjunctival abnormalities, active neovascularization or any central corneal scars.
• Is aphakic.
• Has undergone corneal refractive surgery.
• Is participating in any other type of eye related clinical or research study.

Where it is running

• Clinical Optics Research Lab (CORL) Indiana University School of Optometry, Indiana University — Bloomington, Indiana, United States

Full record on ClinicalTrials.gov

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