A Bilateral Dispensing Comparison of Comfilcon A Over Senofilcon C Contact Lenses
A Bilateral Dispensing Comparison of Comfilcon A Over Senofilcon C Contact Lenses
The aim of this study is to evaluate the subjective acceptance of Comfilcon A contact lenses
 when worn on a daily wear modality over one month.
This study is a 30-subjects prospective, double-masked (investigator and participant),
 bilateral, randomized, one month cross-over dispensing study comparing subject acceptance of
 Comfilcon A against Senofilcon A contact lenses.
Inclusion Criteria:

 A person is eligible for inclusion in the study if he/she:

 1. Is at least 17 years of age and has full legal capacity to volunteer;

 2. Has had a self-reported oculo-visual examination in the last two years.

 3. Has read and signed an information consent letter;

 4. Is willing and able to follow instructions and maintain the appointment schedule;

 5. Is an adapted soft contact lens wearer, who currently wears contact lenses for a
 minimum 3 days/week and 8 hours/day AND who anticipates no difficulty wearing CLs for
 6 days/week, 10 hours /day.

 6. Is willing to wear contact lens in both eyes for the duration of the study;

 7. Has a minimum astigmatism of - 0.75, determined by refraction;

 8. Can be fit with the two study contact lens types in the powers available;

 9. Has a distance visual acuity of 0.20 logMAR (approx 20/30) or better, determined by
 refraction;

 10. Can achieve a distance visual acuity of 0.20 logMAR (approx 20/30) or better in each
 eye with the study contact lenses.

 11. Has clear corneas and no active* ocular disease;

 Exclusion Criteria:

 A person will be excluded from the study if he/she:

 1. Is participating in any concurrent clinical trial;

 2. Has any known active* ocular disease and/or infection;

 3. Has a systemic condition that in the opinion of the investigator may affect a study
 measure;

 4. Is using any systemic or topical medications that in the opinion of the investigator
 may affect a study measure;

 5. Has known sensitivity to fluorescein dye or products to be used in the study;

 6. Appears to have any active* ocular pathology, ocular anomaly or severe insufficiency
 of lacrimal secretion (severe dry eye) that would affect the wearing of contact
 lenses;

 7. Is pregnant, lactating or planning a pregnancy at the time of enrolment (by verbal
 confirmation at the screening visit);

 8. Is aphakic;

 9. Has undergone refractive error surgery;

 10. Has participated in the previous QUENA study.