The current study aims to systematically investigate the diurnal variation in the optical quality of soft contact lenses on eye throughout the day. Subject reported quality of vision will also be evaluated.

Inclusion Criteria:

• Habitual prescription +5.00 D to -6.00 D
• 18-35 years of age
• The subject must appear able and willing to adhere to the instructions set forth in this clinical protocol.
• Vertex corrected refractive cylinder must be -0.75 or less.
• Visual acuity best correctable to 20/25 or better for each eye
• The subject must read and sign the Informed Consent form.
• Mesopic pupil size >5.00 mm.

Exclusion Criteria:

• active condition that would prevent contact lens wear
• history of issues of eye alignment or binocularity by self-report
• doctor diagnosed, self-reported accommodative or binocular vision issues
• doctor diagnosed, self-reported ocular surface disease or dry eye requiring regular, ongoing treatment

through study completion, an average of 2 weeks