The Comparative Clinical Performance of Two Daily Disposable Toric Contact Lenses

This was a multi-center, randomized, participant-masked, bilateral study controlled by cross-comparison. Participants were assigned to either lens type in random sequence. Lenses were worn on a daily disposable wear schedule. Follow-up visits for each lens were performed after 1 week of wear.

Inclusion criteria

• They are at least 18 years old and have the capacity to volunteer.
• They understand their rights as a research subject and are willing and able to sign a Statement of Informed Consent.
• They are willing and able to follow the protocol.
• They currently wear soft contact lenses or have done so in the past two years.
• They have a spherical component of their contact lens prescription between Plano to - 6.00DS (inclusive).
• They have a cylindrical component of their contact lens prescription between -0.75DC and -2.50DC (inclusive).
• They can be satisfactorily fitted with the study lens types.
• At dispensing, they could 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 own a wearable pair of spectacles.
• They agree not to participate in other clinical research while enrolled on this 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.
• 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 eye or health conditions including immunosuppressive or infectious diseases, which would, in the opinion of the investigator, contraindicate contact lens wear or pose a risk to study personnel; or a history of anaphylaxis or severe allergic reaction.
• They are currently wearing one of the study contact lenses.
• They have taken part in any other contact lens or care solution clinical trial or research, within two weeks prior to starting this study.