A Comparison of Silicone Hydrogel Contact Lenses: AIR OPTIX® COLORS Versus AIR OPTIX® AQUA

Inclusion Criteria: * Visual acuity of at least 20/30 (Snellen) in each eye at distance with contact lenses and best corrected visual acuity ≥ 20/25 in each eye. * Manifest cylinder less than or equal to 0.75 diopter (D) (within the previous year) in each eye. * Successful wear of AIR OPTIX® AQUA soft contact lenses in both eyes during the past 3 months for a minimum of 5 days per week and 8 hours per day. * Willing to sign an Informed Consent form. If under legal age of consent, legally authorized representative must also sign an Informed Consent form. * Other protocol-specified inclusion criteria may apply. Exclusion Criteria: * Any ocular or systemic medical condition that may, in the opinion of the investigator, preclude safe administration of the test articles or affect the results of this study. * Wears habitual lenses in an extended wear modality (sleeping in lenses overnight / not removing lenses on a daily basis). * Monovision, monocular (only one eye with functional vision), or fit with only one lens. * History of intolerance or hypersensitivity to any component of the test articles. * Use of any over-the-counter (OTC) or prescribed topical ocular medications within previous 7 days (excluding rewetting drops). * Moderate or severe corneal edema, corneal vascularization, corneal staining, injection, tarsal abnormalities, "other" complications, and any corneal infiltrates. * Current or history of ocular infection, severe inflammation, or disease within previous 6 months. * Any systemic disease that may affect the eye or be exacerbated by use of contact lenses or contact lens solutions. * Ocular or intra-ocular surgery within the previous 12 months (excluding placement of punctal plugs). * Use of medications contributing to dry eye or ocular irritation unless on a stable dosing regimen for a minimum of 30 days prior to study entry and able to remain on stable regimen throughout the study. * Participation in any investigational clinical study within previous 30 days. * Other protocol-specified exclusion criteria may apply.