Comparison of Somofilcon A Daily Disposable Test Contact Lens and Somofilcon A Daily Disposable Control Contact Lens

Not Applicable

Completed

Brief Summary: The purpose of this study is to investigate the overall clinical performance of the somofilcon A daily disposable test soft contact lens compared to the somofilcon A daily disposable control soft contact lens.

Detailed Description: The purpose of this study is to evaluate the clinical performance of an investigational silicone-hydrogel contact lens (test) against a marketed silicone-hydrogel contact lens (control) when worn on a daily disposable wear modality over 1 week (for each lens) in a randomized, bilateral, cross-over, dispensing study.

Recruitment & Eligibility

Inclusion Criteria

Is at least 17 years of age and has full legal capacity to volunteer;
Has had a self-reported oculo-visual examination in the last two years;
Has read, understood, and signed the information consent letter;
Is willing and able to follow instructions and maintain the appointment schedule;
Has a visual acuity of 20/30 or better (in each eye) with their habitual vision correction, or 20/20 best-corrected vision (for binocular distance acuity);
Must be able to achieve 20/30 or better (in each eye) with the study lenses;
Currently wears soft contact lenses for at least 3 days per week, 8 hours each day;
Requires spectacle lens powers between -0.75 and -06.50 diopters sphere (0.25D steps);
Has no more than 0.75 diopters of refractive astigmatism;
Has clear corneas and no active* ocular disease;
Has not worn lenses for at least 12 hours before the examination.

Exclusion Criteria

Is presently participating in any other clinical or research study including eye related clinical or research study;
Has never worn contact lenses before.
Has any systemic disease affecting ocular health.
Has any active* ocular pathology or severe insufficiency of lacrimal secretion (moderate to severe dry eyes) that would affect the wearing of contact lenses.
Is using any systemic or topical medications that will affect a study outcome variable, and/or ocular health.
Has any known sensitivity to fluorescein dye or products to be used in the study.
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 pregnant, lactating, or planning a pregnancy at the time of enrolment (by verbal confirmation at the screening visit).

Primary Outcome Measures

Name	Time	Method
Preference	up to 1 week	Overall lens that subject prefers or no preference
Vision	Up to 1 week	Visual acuity measured in logMAR
Comfort	up to 1 week	Subjective comfort scored 0-100 (0=Cannot be worn, 100=Cannot be felt ever)
Subjective Vision	up to 1 week	Subjective vision scored 0-100 (0=Extremely poor, 100=Excellent vision all the time)
Corneal Staining	up to 1 week	Amount of staining observed on the cornea scored 0-4 (0=none, 4=severe) in 0.25 steps
Conjunctival Staining	up to 1 week	Amount of staining observed on the conjunctiva scored 0-4 (0=none, 4=severe) in 0.25 steps

Secondary Outcome Measures

Name	Time	Method

Locations (1): Center for Contact Lens Research, University of Waterloo
🇨🇦
Waterloo, Ontario, Canada
Center for Contact Lens Research, University of Waterloo
🇨🇦Waterloo, Ontario, Canada