Clinical Evaluation Of Two Daily Disposable Contact Lenses And A Monthly Replacement Lens

Inclusion criteria

• Be no less than 18 and no more than 39 years of age.
• Sign Written Informed Consent and investigator to record this on Case Report Form (See separate document).
• Be willing and able to adhere to the instructions set out in the protocol.
• Own a cell phone and be willing to receive text messages during the day.
• Be an existing successful daily wear soft contact lens. For the purposes of this study this means wearing lenses for at least 6 hours per day, 5 days per week for the last month.
• No extended wear in the last 3 months.
• Subjective refraction must result in a vertexed spherical contact lens prescription between -1.00 and -6.00D.
• Have refractive astigmatism less than or equal to 1.00D in both eyes.
• Achieve visual acuity of 6/9 (20/30) or better in each eye.
• Require a visual correction in both eyes (no monofit or monovision allowed).
• Does not require presbyopic correction (i.e. Not using any presbyopic correction and measured add power of less than +1.00D).
• 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 amblyopia.
• No evidence of lid abnormality or infection (including blepharitis/meibomitis).

• No conjunctival abnormality or infection.
• No clinically significant slit lamp findings (i.e. stromal edema, vascularization, infiltrates or abnormal opacities).
• No other active ocular disease.

Exclusion criteria

• Requires concurrent ocular medication.
• Clinically significant (Grade 3 or 4) corneal stromal haze, corneal vascularization, tarsal abnormalities, bulbar hyperemia, limbal hyperemia, or any other abnormality of the cornea that would contraindicate contact lens wear.
• Clinically significant corneal staining (Grade 3 in more than one corneal region per eye).
• Requires presbyopic correction (i.e. Not using any presbyopic correction and measured add power of less than +1.00D).
• Has had refractive surgery.
• Has had eye injury/surgery within 8 weeks immediately prior to enrolment for this study.
• Abnormal lacrimal secretions.
• Pre-existing ocular irritation that would preclude contact lens fitting.
• Keratoconus or other corneal irregularity.
• PMMA(polymethyl methacrylate), hybrid or RGP(rigid gas permeable) lens wear in the previous 8 weeks.

Does not require presbyopic correction (i.e. Not using any presbyopic correction and measured add power of less than +1.00D).

• Any systemic illness which would contraindicate lens wear or the medical treatment of which would affect vision or successful lens wear.
• Diabetic.
• Infectious disease (e.g., hepatitis, tuberculosis) or an immunosuppressive disease (e.g., HIV (Human immunodeficiency virus)).
• History of chronic eye disease (e.g. glaucoma or ARMD (age related macular degeneration)).
• Pregnancy, lactating or planning a pregnancy at the time of enrolment.
• Participation in any concurrent clinical trial or in last 30 days.