Clinical Evaluation of Two Frequent Replacement Soft Spherical Contact Lenses

Inclusion Criteria: * Is at least 18 years of age and has full legal capacity to volunteer. * Has read and signed an information consent letter. * Self-reports having a full eye examination in the previous two years. * Anticipates being able to wear the study lenses for at least 8 hours a day, 5 days a week. * Is willing and able to follow instructions and maintain the appointment schedule. * Habitual soft contact lens wearers who currently wear sphere contact lenses, or use spectacles for all distances vision correction, for the past 3 months minimum. * Has refractive astigmatism no higher than -0.75DC. * Can be fit and achieve binocular distance vision of at least 20/30 Snellen (or +0.20 logMAR) which participants also deem to be 'acceptable', with the available study lens parameters (powers +8.00 to -12.00DS) Exclusion Criteria: * Is participating in any concurrent clinical or research study. * Has any known active ocular disease and/or infection that contraindicates contact lens wear. * Has a systemic condition that in the opinion of the investigator may affect a study outcome variable. * Is using any systemic or topical medications that in the opinion of the investigator may affect contact lens wear or a study outcome variable. * Has known sensitivity to the diagnostic sodium fluorescein used in the study. * Self-reports as pregnant, lactating or planning a pregnancy at the time of enrolment. * Has undergone refractive error surgery or intraocular surgery.