Evaluation of the Performance of Different Daily Disposable Lens Designs in Habitual Soft Contact Lens Wearers

Evaluation of the Performance of Different Daily Disposable Lens Designs in Habitual Soft Contact Lens Wearers

The main objective of the study is to refit existing soft lens wearers with two different daily disposable contact lens types, Lens A and Lens B, to determine their performance after one week of wear.

This study is a prospective, bilateral eye, double-masked, randomized, 1-week cross-over, daily-wear design involving two different daily disposable lens types. Each lens type will be worn for approximately one week, during which participants record their subjective lens-wear experience.

Inclusion Criteria:

1. Is at least 18 years of age and has full legal capacity to volunteer;
2. Has read and signed an information consent letter;
3. Self reports having a full eye examination in the previous two years;
4. Anticipates being able to wear the study lenses for at least 8 hours a day, 7 days a week;
5. Is willing and able to follow instructions and maintain the appointment schedule;
6. Habitually wears soft contact lenses, for the past 3 months minimum;
7. Has refractive astigmatism no higher than -0.75DC in each eye;
8. Can be fit and achieve binocular distance vision of at least 20/30 Snellen (Available lens parameters are sphere -1.00 to -6.00D, 0.25D steps).

Exclusion Criteria:

1. Is participating in any concurrent clinical or research study;
2. Habitually wears one of the study contact lenses;
3. Has any known active* ocular disease and/or infection that contraindicates contact lens wear;
4. Has a systemic condition that in the opinion of the investigator may affect a study outcome variable;
5. Is using any systemic or topical medications that in the opinion of the investigator may affect contact lens wear or a study outcome variable;
6. Has known sensitivity to the diagnostic sodium fluorescein used in the study;
7. Self-reports as pregnant, lactating or planning a pregnancy at the time of enrolment;
8. Has undergone refractive error surgery or intraocular surgery.