Comparison of Clinical Performance and Subjective Preference of Three Contact Lenses

Study Overview
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Brief Summary
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The purpose of this study is to evaluate the clinical performance and subject's preference out of three LRE (Limbal Ring Enhancing) lens types: etafilcon A (Johnson&Johnson), methafilcon A (Interozzo), and methafilcon A (CooperVision).

Detailed Description
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This will be a subject-masked, bilateral, randomized, crossover dispensing study to compare clinical performance and subjective preference out of three lens types. Sixty subjects will be assigned into three groups and each group will wear the test and control lenses as matched pairs for one week in random order. Lenses will be worn on a daily wear, daily disposable schedule.

Official Title
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Comparison of Clinical Performance and Subjective Preference Out of Three Cosmetic Contact Lenses (Limbal Ring-enhancing Lenses, LRE Lenses)

Conditions
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Myopia

Intervention / Treatment
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* Device: etafilcon A
* Device: methafilcon A - Interozzo
* Device: methafilcon A - CVI (CooperVision)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age of 18 years and above and has full legal capacity as a volunteer Understand the rights as a research subject and willing and able sign a statement of informed consent Existing soft contact lens wearers or previous experience of contact lens wear Being able to wear the study lenses for at least eight hours a day At least 6/9 visual acuity in each eye with the study lenses Astigmatism less than 1.50 D (Diopter) in both eyes Agreed to follow the protocol and not to participate in other clinical research for the duration of this study Exclusion Criteria: Have an ocular disorder which would normally contraindicate contact lens wear Have a systemic disorder or any infectious diseases which would normally contraindicate contact lens wear Have previously had any ocular surgery such as corneal refractive surgery Have less than 6/9 visual acuity in each eye with the study lenses Are currently using any topical medication such as eye drops or ointment Have any corneal distortion resulting from previous rigid lens wear or have keratoconus Are currently pregnant or lactating No previous contact lens wear

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: etafilcon A<br> | Device: etafilcon A<br>* contact lens<br>|
| Active Comparator: methafilcon A - Interozzo<br> | Device: methafilcon A - Interozzo<br>* contact lens<br>|
| Active Comparator: methafilcon A - CVI<br> | Device: methafilcon A - CVI (CooperVision)<br>* contact lens<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Comfort | Subjective ratings of comfort for each lens pair was assessed. Scale 0-100, 0=causes pain, 100=very comfortable. | 1 week per intervention |