The Physiological Consequence of Silicone-hydrogel Care-solution Bio-incompatibility

Inclusion Criteria: * At least 18 years of age. * Best correctable vision to 20/40 in each eye. * Possess a functional spectacle prescription to allow adequate vision during the de-adaptation and fluorometry measurement period. * No known ocular or systemic allergies, which may interfere with contact lens wear. * No known systemic disease, or need for medication that may interfere with contact les wear (i.e. antihistamines, beta-blockers, steroids, ect.). Exclusion Criteria: * Subjects demonstrating any medical condition that may affect the results of this study SHOULD NOT be enrolled. The following are specific conditions that exclude subjects from enrollment in this study. * Eye (ocular) or systemic allergies that may interfere with contact lens wear. * Clinically significant corneal swelling (greater than 3 or 4 on a 0-4 scale), corneal blood vessel growth (vascularization), corneal staining, bulbar redness, tarsal redness, or any other abnormality of the cornea that may cause unsafe contact lens wear. * Are taking part in any other study or have taken part in a study within the last 14 days. * Are pregnant, or anticipating to become pregnant during the course of the study.