Clinical Comparison of Two Multifocal Contact Lenses Made of Silicone Hydrogel Materials
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Myopia
- Sponsor
- CIBA VISION
- Enrollment
- 109
- Primary Endpoint
- Corrected Distance Binocular Visual Measurement in Normal Illumination Reported as Binocular Distance Visual Acuity
- Status
- Completed
- Last Updated
- 13 years ago
Overview
Brief Summary
The purpose of this study was to compare visual performance measures between two multifocal contact lenses on presbyopic wearers.
Investigators
Eligibility Criteria
Inclusion Criteria
- •At least 35 years of age.
- •Spectacle add of +0.50 to +2.50 diopters (inclusive).
- •Currently wearing soft contact lenses at least 5 days per week and at least 8 hours per day.
- •Able to be fit in both eyes with soft multifocal lenses in available powers.
- •Other protocol-defined inclusion criteria may apply.
Exclusion Criteria
- •Eye injury or surgery within 12 weeks of enrollment in trial.
- •Currently enrolled in any clinical trial.
- •Astigmatism of 1.00 diopter or more.
- •Currently wearing excluded brands of multifocal lenses, as specified by protocol.
- •Other protocol-defined exclusion criteria may apply.
Outcomes
Primary Outcomes
Corrected Distance Binocular Visual Measurement in Normal Illumination Reported as Binocular Distance Visual Acuity
Time Frame: 1 week
The participant read a Snellen chart at a 20-foot equivalent distance with both eyes together while wearing study lenses. The Snellen acuity was converted into logMAR units (logarithm of the minimum angle of resolution). A 20/20 Snellen acuity equated to a logMAR acuity of 0.0 and was considered normal distance eyesight. A positive logMAR value indicated poorer vision, and a negative value denoted better visual acuity.
Corrected Near Binocular Visual Measurement in Normal Illumination Reported as Binocular Near Visual Acuity
Time Frame: 1 week
The participant read a Snellen chart at 40 centimeters with both eyes together while wearing study lenses. The Snellen acuity was converted into logMAR units (logarithm of the minimum angle of resolution). A 20/20 Snellen acuity equated to a logMAR acuity of 0.0 and was considered normal near eyesight. A positive logMAR value indicated poorer vision, and a negative value denoted better visual acuity.