Ocular Responses to Short and Long-term Lens Wear

Inclusion Criteria: * Is at least 17 years old and has full legal capacity to volunteer; * Is correctable to a visual acuity of 6/7.5 (20/25) or better (both eyes) with their habitual vision correction; * Is a current soft lens wearer and wears contact lenses six or more days/week; * Has clear corneas and no active ocular disease. Exclusion Criteria: * Has any clinically significant blepharitis or dry eye; * Has undergone corneal refractive surgery; * Is aphakic; * Has any active ocular disease; * Has any systemic disease affecting ocular health; * Is using any systemic or topical medications that may affect ocular health;