Dispensing Evaluation of a Galyfilcon A Prototype Lens and a Marketed Contact Lens

Inclusion Criteria:

- The subject is a current spherical soft contact lens wearer and willing to wear the
study lenses on a daily wear basis for the duration of the study.

- The subject's optimal vertexed spherical equivalent distance correction must be
between -1.00 and - 5.00D.

- 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
the 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.