Multifocal Lens Design Evaluation

Multifocal Lens Design Evaluation (US)

The purpose of this study was to compare binocular high contrast, high illumination (HC/HI) visual acuity at near (40 centimeters) of new multifocal contact lenses against AIR OPTIX® AQUA MULTIFOCAL contact lenses when worn for 9 hours.

Each participant was randomized to a specific sequence of lens wear, during which each lens type was worn bilaterally for 9 hours to compare performance characteristics.

Inclusion Criteria:

• Sign written Informed Consent document.
• Have spectacles that provide acceptable vision and be willing to wear them if unable to wear the study lenses.
• Be presbyopic with a spectacle add ≥ 0.50 diopter.
• Currently wearing soft contact lenses at least 5 days a week.
• Other protocol-specified inclusion criteria may apply

Exclusion Criteria:

• Eye injury or surgery within 12 weeks of enrollment in this trial.
• Pre-existing ocular irritation that would preclude contact lens fitting.
• Currently enrolled in any clinical trial.
• Evidence of systemic or ocular abnormality, infection, or disease which is likely to affect successful wear of contact lenses (for at least 9 hours) or use of their accessory solutions as determined by the Investigator.
• Any use of medications for which contact lens wear could be contraindicated as determined by the Investigator.
• Binocular visual acuity worse than 20/25.
• Corrected by monovision.
• Other protocol-defined exclusion criteria may apply.