Comparison of Lens Fit and Lens Power of a New Contact Lens to Two Marketed Contact Lenses in a Population of Soft Contact Lens Wearers

Inclusion criteria

• Must be at least 18 years of age and no more than 55 years of age.
• Must sign written informed consent.
• Optimal spherical equivalent distance correction must be between -1.00 and -6.00 diopters.
• Have spectacle astigmatism ≤ -0.75 diopter cylinder in both eyes.
• Must have visual acuity best correctable to 20/25+3 or better for each eye.
• Must appear able and willing to adhere to the instructions set forth in this clinical protocol.
• Have normal eyes with no evidence of abnormality or disease. For the purposes of this study a normal eye is defined as one having: No evidence of lid abnormality or infection; No conjunctival abnormality or infection; No clinical significant slit lamp findings, (i.e., oedema, staining, scarring, vascularization, infiltrates or abnormal opacities); No other active ocular disease.
• The subject is a current spherical soft contact lens wearer (defined as a minimum of 6 hours of daily wear for a minimum of 1 month prior to the study) and willing to wear the study lenses on a daily wear basis (defined as a minimum of 6 hours of wear per day at least five days of the week) for the duration of the study.

Exclusion criteria

• Any systemic illness which would contraindicate lens wear or the medical treatment of which would affect vision or successful lens wear.
• Any previous eye surgery involving the anterior segment.
• Pre-existing ocular disease that would preclude contact lens fitting.
• Abnormal lacrimal secretions.
• Keratoconus or other corneal irregularity.
• Pregnancy, lactating or planning a pregnancy at the time of enrollment.
• Participation in any concurrent clinical trial.
• Subject's habitual contact lens type is toric or multifocal.
• Require any concurrent ocular medication.