Lens Wear Schedules and End-of-Day Comfort

Inclusion Criteria: * Is at least 17 years of age and has full legal capacity to volunteer. * Is willing and able to follow instructions and maintain the appointment schedule. * Has had an ocular examination in the last two years. * Is an adapted soft contact lens wearer. * Experiences a decrease in ocular comfort through a lens-wearing day. * Has a current pair of spectacles. * Has a distance contact lens prescription of +6.00 diopters to -10.00 diopters and an acceptable fit with the study lenses. * Has astigmatism less than or equal to -1.00 DC. * Achieves visual acuity of 6/9 or better with the study lenses and with habitual spectacles. * Other protocol-defined inclusion criteria may apply. Exclusion Criteria: * Has any ocular disease. * Has a systemic condition that may affect a study outcome variable. * Is using any systemic or topical medications that may affect ocular health. * Has known sensitivity to the diagnostic pharmaceuticals to be used in the study. * Other protocol-defined exclusion criteria may apply.