Comparative In-Vivo Wetting Characteristics of Silicone Hydrogel Materials With Selected Lens Care Systems

Inclusion Criteria: * Read and understand the Participant Information Sheet; * Read, sign, and date the Informed Consent; * Be a current silicone hydrogel contact lens wearer using the contact lenses under a frequent replacement (bi-weekly or monthly) daily wear modality; * Be classified as symptomatic and a depositor at the end of the replacement period according to protocol-specified criteria; * Agree to wear study contact lenses as directed for the duration of the study and maintain the appointment schedule; * Best corrected visual acuity of 6/9 or better in each eye; * Normal eyes with the exception of the need for visual correction; * Other protocol-defined inclusion criteria may apply. Exclusion Criteria: * Known sensitivity or intolerance to any of the contact lenses or contact lens care products to be used; * Monocular vision (only one eye with functional vision or only one eye fitted with contact lenses); * Use of systemic medication which might interfere with contact lens wear or produce dry eye side effects; * Systemic disease which might interfere with contact lens wear or produce dry eye side effects; * Systemic or ocular allergies which might interfere with contact lens wear; * Ocular disease which might interfere with contact lens wear; * Active ocular infection; * Use of any concomitant topical ocular medications during the study period; * Previous ocular surgery; * Pregnant, planning to become pregnant, or lactating at the time of enrollment; * Participation in an investigational drug or device study within 30 days of entering this study; * Other protocol-defined exclusion criteria may apply.