Assessment of Contact Lens Wettability Using Wavefront Aberrometry

Inclusion criteria

• Healthy males or females that are at least 18 to no more than 40 years of age.
• The subject must read, understand, and sign the Statement of Informed Consent and receive a fully executed copy of the form.
• The subject must appear able and willing to adhere to the instructions set forth in this clinical protocol.
• The subject must possess a wearable pair of spectacles with distance vision correction which provide satisfactory vision.
• The subject is a current spherical soft contact lens wearer (defined as a minimum of 6 hours of lens wear per week for a minimum of 1 month prior to the study) or has sufficient prior experience with soft contact lens wear (defined as a minimum of 30 days of lens wear during the last 5 years).
• The subject's vertexed best sphere distance refraction must be between -0.75 and -5.00 D in both eyes.
• Cylinder refraction less than or equal to -0.75 D in both eyes (any axis).
• The subject must have corrected visual acuity of 20/20 or better in each eye.

Exclusion criteria

• Currently pregnant or lactating (subjects who become pregnant during the study will be discontinued).
• Any ocular or systemic allergies or diseases that may interfere with contact lens wear.
• Any systemic disease, autoimmune disease, or use of medication, which may interfere with contact lens wear.
• Any known hypersensitivity or allergic reaction to contact lens solutions or sodium fluorescein dye.
• Any previous ocular or intraocular surgery (e.g. radial keratotomy, PRK, LASIK, etc.)
• Current wearers of rigid or hybrid contact lenses.
• Entropion, ectropion, extrusions, chalazia, recurrent styes, glaucoma, history of recurrent corneal erosions, aphakia, or moderate or above corneal distortion by keratometry.
• Infectious diseases (e.g. hepatitis, tuberculosis) or an immuno-suppressive disease (e.g. HIV).
• History of binocular vision abnormality or strabismus.
• Employee of the investigational clinic (e.g. Investigator, Coordinator, Technician).
• Clinically significant (grade 3 or 4) corneal edema, pterygium, corneal vascularization, corneal staining, or any other abnormalities of the cornea or conjunctiva which may interfere with the study measurements.
• Strabismus, suppression or amblyopia.
• Any ocular infection.