Comparison of Two Daily Disposable Soft Contact Lenses

This study was a randomised, double-masked, crossover, bilateral dispensing study, controlled by cross-comparison. Fifty-five subjects will wear each lens brand for approximately one week in random order. Lenses were worn on a daily wear, daily disposable basis.

Inclusion criteria

• They are between 18 and 40 years of age (inclusive).
• They understand their rights as a research subject and are willing to sign a Statement of Informed Consent.
• They are willing and able to follow the protocol.
• They are an existing silicone hydrogel reusable spherical contact lens wearer in both eyes.
• They have a contact lens spherical prescription between -0.25D and -6.00D (inclusive) based on ocular refraction.
• They own a wearable pair of spectacles and wear them on the day of the initial visit.
• At dispensing, they can attain at least 0.20 logMAR distance high contrast visual acuity in each eye with the study lenses within the available power range.
• They are willing to comply with the wear schedule (at least five days per week and for at least eight hours per day).
• They agree not to participate in other clinical research for the duration of the study.

Exclusion criteria

• They have an ocular disorder, which would normally contra-indicate contact lens wear.
• They have a systemic disorder, which would normally contra-indicate contact lens wear.
• They are using any topical medication such as eye drops or ointment, or use any rewetting/lubricating drops whilst on this study.
• They are aphakic.
• They have had corneal refractive surgery.
• They have any corneal distortion resulting from previous hard or rigid lens wear or have keratoconus.
• They are pregnant or breastfeeding.
• They have any ocular abnormality which would, in the opinion of the investigator, normally contraindicate contact lens wear
• They have any infectious disease which would, in the opinion of the investigator, contraindicate contact lens wear or pose a risk to study personnel; or they have any immunosuppressive disease (e.g. HIV), or a history of anaphylaxis or severe allergic reaction.
• They have taken part in any contact lens or care system clinical research within two weeks prior to starting this study.