Pilot Evaluation of a New Galyfilcon A Contact Lens Compared to a Marketed Galyfilcon A Contact Lens

Inclusion Criteria:

- The subject must be at least 18 years of age and no more than 39 years of age.

- The subject is a current spherical soft contact lens wearer (defined as a minimum of 6
hours of daily wear (DW) 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.

- The subject's optimal vertexed spherical equivalent distance correction must be
between -1.00 and - 9.00D.

- Any cylinder power must be ≤ -0.75D.

- The subject must have visual acuity best correctable to 20/25+3 or better for each
eye.

- The subject must read and sign the Statement of Informed Consent.

- The subject must appear able and willing to adhere to the instructions set forth in
this clinical protocol.

Exclusion Criteria:

- Ocular or systemic allergies or disease which might interfere with contact lens wear.

- Systemic disease or use of medication which might interfere with contact lens wear.

- Clinically significant (grade 3 or 4) corneal edema, corneal vascularization, corneal
staining, or any other abnormalities of the cornea which would contraindicate contact
lens wear.

- Clinically significant (grade 3 or 4) tarsal abnormalities or bulbar injection which
might interfere with contact lens wear.

- Any ocular infection.

- Any corneal distortion resulting from previous hard or rigid gas permeable contact
lens wear.

- Pregnancy or lactation.

- Diabetes.

- Infectious diseases (e.g. hepatitis, tuberculosis) or an immuno-suppressive disease
(e.g. HIV).

- Habitual contact lens type is toric, multifocal, or is worn as extended wear.