Acceptance & Tolerance Study of Multifocal Contact Lenses by Functional Emmetropes
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Study Type
Study Type
Enrollment (Actual)
Enrollment
Phase
Phase
- Not Applicable
Contacts and Locations
Study Locations
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London, United Kingdom, SW1E 6AU
- Ocular Technology Group-International
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Florida
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Pensacola, Florida, United States, 32503
- Tallahassee Eye Center
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Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- The subject must read, understand and sign the Statement of Informed Consent and receive a fully executed copy of the form.
- The subject must appear able and willing to adhere to the instructions set forth in this clinical protocol.
- The subject must be between 40 and 70 years of age.
- The subject's vertex corrected spherical equivalent distance refraction must be in the range of -1.00 to +2.00 in each eye.
- The subject's refractive cylinder must be less than or equal to -0.75 D in each eye.
- The subject's ADD power must be in the range of +0.75 D to +2.50.
- The subject must have best corrected visual acuity of 20/25 or better in each eye.
Exclusion Criteria:
- Currently pregnant or lactating (subjects who become pregnant during the study will be discontinued).
- Any ocular or systemic allergies that contraindicate contact lens wear.
- Any ocular or systemic disease, autoimmune disease, or use of medication, that contraindicates contact lens wear.
- Any ocular abnormality that may interfere with contact lens wear.
- Use of any ocular medication, with the exception of rewetting drops.
- Any previous intraocular surgery (e.g. radial keratotomy, PRK, LASIK, etc.).
- Any grade 3 or greater slit lamp findings (e.g. edema, corneal neovascularization, corneal staining, tarsal abnormalities, conjunctival injection) which may contraindicate contact lens wear.
- History of herpetic keratitis.
- Any ocular infection or inflammation.
- Any corneal distortion or irregular cornea.
- History of binocular vision abnormality or strabismus.
- Any infectious disease (e.g. hepatitis, tuberculosis) or a contagious immunosuppressive disease (e.g. HIV).
- History of diabetes.
- Current or previous history of being prescribed a correction for distance vision.
- Current or previous history of contact lens wear.
- Participation in any contact lens or lens care product clinical trial within 30 days prior to study enrollment.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
|---|---|
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Experimental: Multifocal Test Contact Lens
Subjects will wear the test lenses at least six hours per day, at least five days per week
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Used in a daily wear modality
Other Names:
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What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
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Proportion of Successful Contact Lens Wearers
Time Frame: 2 months post wear
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Proportion of Successful contact lens wearers is based on a subject's responses to two questionnaire items, "Overall Quality of Vision" and "Overall Comfort".
Each item uses a 6 response like-rt scale (0= Not Applicable, 1=Excellent, 2=Very Good, 3=Good, 4=Fair and 5=Poor).
The data from each item was dichotomized into two groups.
If a subject responded "Excellent", "Very Good" or "Good" then the response=1, otherwise the response=0.
The proportion of subjects with response=1 was reported as the proportion of successful contact lens wearers.
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2 months post wear
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Collaborators and Investigators
Sponsor
Sponsor
Study record dates
Study Major Dates
Study Start (Actual)
Study Start
Primary Completion (Actual)
Primary Completion
Study Completion (Actual)
Study Completion
Study Registration Dates
First Submitted
First Submitted
First Submitted That Met QC Criteria
First Submitted That Met QC Criteria
First Posted (Estimate)
First Posted
Study Record Updates
Last Update Posted (Actual)
Last Update Posted
Last Update Submitted That Met QC Criteria
Last Update Submitted That Met QC Criteria
Last Verified
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
Other Study ID Numbers
- CR-5672
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