Daily Disposable Comparison Study

Daily Disposable Comparison Study

The objective of the study is to compare the overall subjective preference between two Daily Disposable hydrogel lenses when refitted into a third hydrogel lens.

This was a two-day, randomized, non-dispensing, double-masked, contralateral study with two parallel groups. Participants were recruited into one of two groups - participants who habitually wore etafilcon A lens and participants who habitually wore nelfilcon A lens.

Inclusion Criteria:

1. Is at least 17 years of age and has full legal capacity to volunteer;
2. Has read and signed an information consent letter;
3. Is willing and able to follow instructions and maintain the appointment schedule;
4. Is correctable to a visual acuity of 20/40 or better (in each eye) with their habitual correction and the assigned study lenses;
5. Habitually wears either 1 Day Acuvue Moist or Dailies Aqua Comfort Plus contact lenses.
6. Demonstrates an acceptable fit with the study lenses

Exclusion Criteria:

1. Is participating in any concurrent clinical or research study;
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 outcome variable;
4. Is using any systemic or topical medications that in the opinion of the investigator may affect a study outcome variable;
5. Has known sensitivity to the diagnostic pharmaceuticals to be used in the study;
6. Is pregnant, lactating or planning a pregnancy at the time of enrolment (by verbal confirmation at the screening visit);
7. Is aphakic;
8. Has undergone refractive error surgery;