Assessment of Comfort & Ocular Surface Parameters w Novel Designs of Daily Disposable Silicone Hydrogel Contact Lenses

The objectives of the study are

1. to identify possible reasons for the different comfort and vision experience in Japanese CL wearers compared to Caucasian CL wearers and
2. to assess whether the modification of lens thickness in the optical zone results in increased comfort and reduced visual acuity fluctuations in Caucasian eyes.

• Menicon Modified Lens Design (Device): Randomized in a daily wear, single day (6 hours or more) evaluation

Primary outcomes

• Participant's subjective rating of comfort, Questionnaire [2 Days]: Participants rate their eye comfort by subjective questionnaire (non-annotated scale, 0-100, 0=painful, 100=can't feel the lenses)
• Participant's subjective rating of vision, Questionnaire [2 Days]: Participants rate their vision by subjective questionnaire (non-annotated scale, 0-100, 0=not at all sharp/clear, 100=sharp/clear
• Participant's subjective rating of lens handling, Questionnaire [2 Days]: Participants rate their ability to handle the contact lens by subjective questionnaire (non-annotated scale, 0-100, 0=very difficult, 100=very easy

Sex: All, ages: 18 Years to any, accepts healthy volunteers

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. Is willing and able to follow instructions and maintain the appointment schedule;
4. Is of Caucasian heritage;
5. Habitually wears soft spherical daily disposable contact lenses with a power between

   -0.50 to -2.75D (inclusive);
6. Demonstrates an acceptable fit with both study CL designs (initial \& modified);
7. Is correctable to a visual acuity of 0.20 LogMAR (approximately 20/30) or better (in each eye) with both study CL designs;
8. Has a manifest cylindrical spectacle refraction that does not exceed -1.00DC in either eye;
9. Should own a wearable pair of spectacles. -

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 self-report);
7. Is aphakic;
8. Has undergone refractive error surgery; -