Quantitative Study of New Limbal Ring Prototypes

Inclusion criteria

• The subject must be at least 18 years of age and no more than 39 years of age (inclusive)
• Subjects must be Asian female
• Subjects must be able to read Chinese
• Subjects' monthly household income must be above HKD$ 10,000
• Subjects must be habitual soft contact lens wearer or habitual limbal lens wearer or have a history of previous habitual lens wear.
• Subjects' current/previous habitual lens must be in the disposable soft lens modality (ranging from daily to monthly)
• Subjects must have dark colored iris (black, brown, or brown hazel)
• Subjects must be "concept acceptors". Concept acceptors are subjects that are willing to try new circle contact lenses.
• Subjects must be classified as either 'Classic' or 'Vogue' on a Pattern Evaluation Screening Questionnaire.
• Subjects must have acceptable near vision (without vision correction) and be able to see the test article lenses in the mirror 30 cm or closer.
• Subjects must have best corrected visual acuity of 20/40 (Snellen or equivalent) or better in each eye.
• Subjects must possess a functional/usable pair of spectacles and bring them to the visit (only if applicable-to the investigators discretion)
• Subjects must read, understand, and sign the Statement of Informed Consent
• Subjects must appear able and willing to adhere to the instructions set forth in this clinical protocol

Exclusion criteria

• Subjects, or subjects' family member within the same household, that work for the following entities/companies: Government, advertising, marketing research or consultancy, media or public relations, companies that make, distribute or sell eyewear or contact lenses, eyecare practice (optometrist, ophthalmologist, optician) or the research center conducting the study
• Habitual wearers of rigid gas permeable lenses within the last 3 months
• Habitual soft conventional contact lens wearers (conventional lenses defined as replacement modality of greater than 1 month)
• Any color deficiencies, by self report
• Currently pregnant or breast-feeding a baby
• Diabetes
• Any ocular or systemic allergies or diseases which may interfere with contact lens wear
• Any systemic disease, autoimmune disease, or use of medication which may interfere with contact lens wear, at the investigator's discretion
• Any infectious diseases (e.g. hepatitis, tuberculosis) or a contagious immunosuppressive disease (e.g. HIV), by self report
• Any grade 3 or greater Biomicroscopy findings (this includes, corneal edema, corneal staining, corneal vascularization, conjunctival injection, tarsal abnormalities, bulbar injection) on the FDA classification scale
• Any active ocular abnormalities/conditions that may interfere with contact lens wear (this includes, but not limited to, chalazia, recurrent styes, pterygium, infection, etc.)
• Any corneal distortion or moderate or above corneal distortion by self report
• History of any corneal refractive surgery
• Habitual contact lens is multifocal, monovision or worn as extended wear