Controlling Myopia Progression With Soft Contact Lenses (Contact Lens Control)
Controlling Myopia Progression With Soft Contact Lenses
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
-
-
Massachusetts
-
Boston, Massachusetts, United States, 02115
-
-
Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- The subject must be between 8 and 12 years of age.
- At least one of the subject's parents or legal guardian must read and understand English or Chinese.
- The subject's manifest objective refraction (measured with an auto refractor) must be sphere: between -0.25D and -4.50D, and cylinder: <1.50D in each eye.
- The subject's best sphere contact lens correction must lie between -0.75D (better of the two eyes)and -4.25D (poorer of the two eyes).
- The subject's cycloplegic objective refraction must be here: between -0.75D and -4.00D cylinder: < or equal to 1.00D in each eye.
- The subject must have 1.00D or less difference in spherical equivalent between the two eyes with cycloplegic refraction.
- The subject must have a spectacle lens best-corrected visual acuity of 0.8 (20/25) or better in both eyes.
- The subject's parent or legal guardian must read and sign the STAEMENT OF INFORMED CONSENT and the subject must read and sign the Child's Assent Form and be provided a copy of each form.
- The subject must appear able and willing to adhere to the instructions set forth in this clinical protocol.
Exclusion Criteria:
- Ocular or systemic allergies or diseases that may interfere with contact lens wear.
- Systemic disease or autoimmune disease or use of medications (e.g. antihistamine), which may interfere with contact lens wear.
- Clinically significant (grade 3 or 4) corneal edema, corneal vascularization, corneal staining, or any other abnormality of the cornea, which may contraindicate contact lens wear.
- Clinically significant (grade 3 or 4) tarsal abnormalities or bulbar injection that might interfere with contact lens wear.
- Any ocular infection.
- Any corneal distortion resulting from previous hard or rigid gas permeable contact lens wear.
- Any infectious disease (e.g. hepatitis, tuberculosis) or an immunosuppressive disease (e.g. HIV)
- Diabetes
- Anisometropia of greater than 1.00D by cycloplegic refraction.
- Astigmatism of greater than 1.00D in either eye by cycloplegic refraction.
- Eye injury or surgery within eight weeks immediately prior to enrollment for this study.
- Previous refractive surgery, orthokeratology, keratoconus, or other corneal irregularity in either eye. Rigid contact lens wearers cannot be enrolled in the study unless they are off rigid contact lenses for at least 4 weeks.
- Strabismus in either eye.
- Pupil or lid abnormality or infection in either eye
- Central corneal scar in either eye
- Aphakia in either eye
- Contraindications to contact lens wear such as dry eye or history of prior unsuccessful contact lens wear.
- History of participation in prior clinical trials aimed to control myopia progression.
- Surgically altered eyes, ocular infection of any type, ocular inflammation.
- An anterior chamber angle grade 2 or narrower by the Van Herrick method
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
|---|---|
|
Experimental: Test Lens A
Test lenses will be worn in a daily wear modality
|
FDA-approved, non-marketed daily disposable soft contact lens, conventional design
|
|
Experimental: Test Lens C
Test lenses will be worn in a daily wear modality
|
Daily disposable soft contact lens with new optical design
|
What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Spherical Equivalent Refractive Error
Time Frame: Baseline and every 6 months post-baseline for 2 years
|
Cycloplegic spherical equivalent auto refraction of the subject's right eye was computed from the sphero-cylindrical refraction measured with an open-field auto refractor.
The median of 3 repeated measures, each of which was the average of 3 consecutive readings, was used for the analysis.
Higher values in spherical refraction indicate progression in Myopia.
|
Baseline and every 6 months post-baseline for 2 years
|
Secondary Outcome Measures
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Axial Length
Time Frame: Baseline and every 6 months for 2 years
|
Axial length was measured with the IOLMaster at baseline and every 6 months for 2 years.
Five measurements were collected for each visit from the subject's right eye and the average of the five measurements was used for the analysis.
|
Baseline and every 6 months for 2 years
|
Collaborators and Investigators
Sponsor
Sponsor
Publications and helpful links
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
Additional Relevant MeSH Terms
Other Study ID Numbers
Other Study ID Numbers
- CR-1561AD
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
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