Proclear 1-D Multifocal Nondispensing Study

The aim of this study was to compare the subjective and objective vision. of Proclear® 1-D Multifocal test lenses (MF) with +0.75D overcorrection of the distance lens power in the nondominant eye compared to the Air Optix® Aqua Multifocal (CIBA VISION) contact lenses in low, Medium and High Add presbyopic subjects (+1.25 to +2.50 inclusive).

Inclusion criteria

• Be between 40 and 65 years of age (inclusive)
• Require a reading addition of +1.25 to +2.50D (inclusive)
• Spherical distance CL or spectacle prescription between +3.00D and -5.00D(inclusive)
• Spectacle cylinder less than or equal to 0.75D in both eyes.
• Currently has a reading add correction in their spectacle or CL habitual correction (e.g. if myope, removes distance correction to read)
• Normal binocularity (no amblyopia, no strabismus, no habitually uncorrected anisometropia ≥ 2.00D)
• Have a minimum 2 weeks soft contact lens experience
• Be able to wear the study lens (e.g. good fit is attained and acceptable subjective comfort and vision for the duration of the study)
• Able to read, comprehend and sign an informed consent
• Willing to comply with the wear and study visit schedule
• Monocular best-corrected distance visual acuity ≥ 20/25 in each eye
• No gas permeable contact lens wear for 1 month prior to the study

Exclusion criteria

To be eligible for the study, each candidate must not present with any of the following

• Any active corneal infection, injury, inflammation, or ocular abnormality
• Systemic or ocular allergies, which might interfere with contact lens wear
• Systemic disease, which might interfere with contact lens wear
• Ocular disease, which might interfere with contact lens wear
• Pregnant or lactating
• Strabismus/amblyopia
• Habitually uncorrected anisometropia greater than or equal to 2.00 D
• Subjects who have undergone corneal refractive surgery
• Subjects with keratoconus or other severe corneal irregularity contraindicating lens wear