Evaluation of Visual Performance With Contact Lenses

Study Overview
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Brief Summary
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This study will evaluate the influence of contact lens optical design on visual performance using standard and multifocal soft contact lenses (MFCLs).

Detailed Description
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The study will examine visual acuity with various contact lenses, with and without glare source, in myopes between the ages of 18-39 years old (inclusive) to determine the effect of different multifocal optical designs on visual performance in the post-fit period.

Official Title
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Evaluation of Visual Performance With Contact Lenses

Conditions
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Myopia

Intervention / Treatment
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* Device: Single Vision Contact Lens
* Device: Multifocal Contact Lens 1
* Device: Multifocal Contact Lens 2


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 18 to 39 years of age Best corrected visual acuity of at least 20/30 Spherical equivalent refractive error in each eye of between -0.75 and -6.00 diopters sphere after vertexing to the corneal plane Exclusion Criteria: Greater than -1.00 diopter of refractive astigmatism at the corneal plane Any active anterior segment disease, pathology, or surgery affecting vision, refraction, or the ability to wear a soft contact lens History of ocular trauma or surgery causing abnormal or distorted vision Current Rigid Gas Permeable (RGP) contact lens wearers Unwilling to have eyes photographed or video recorded Pregnant and/or lactating females, by self-report

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 39 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Group 1<br>All subjects will wear the 3 contact lenses: Single Vision, Multifocal 1 and Multifocal 2. | Device: Single Vision Contact Lens<br>* Spherical Contact Lens worn on non-dispensing basis<br>* Other names: comfilcon A;Device: Multifocal Contact Lens 1<br>* Multifocal Contact Lens worn on non-dispensing basis<br>* Other names: comfilcon A;Device: Multifocal Contact Lens 2<br>* Multifocal Contact Lens worn on non-dispensing basis<br>* Other names: etafilcon A;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Low Contrast Visual Acuity with Glare | Vision with contact lenses measured under low illumination conditions with glare source | Through study completion, an average of 3 hours | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Low Contrast Visual Acuity without Glare | Vision with contact lenses measured under low illumination conditions without glare source | Through study completion, an average of 3 hours | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Multifocal Contact Lens, Myopia, Visual Performance