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
-
-
Kowloon
-
Hung Hom, Kowloon, Hong Kong
- The Hong Kong Polytechnic University
-
-
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 and of Asia origin.
- The subject's best sphere contact lens correction must lie between -0.75D (best of the two eyes) and -5.00D (worst of the two eyes)
- Astigmatism must be less than or equal to 1.00D
- Less than 1.00D difference in spherical equivalent between the two eyes
- The subject must have a best-corrected visual acuity of 20/25 and spherical equivalent refraction visual acuity of 20/25 or better in both eyes
- The subject must have at least 8D of accommodation.
- The subject's parent or legal guardian must read and sign the STATEMENT 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 the 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 medication (e.g. antihistamines), which may interfere with contact lens wear.
- Clinically significant (grade 3 or 4) tarsal abnormalities or bulbar injection that might 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.
- 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 immunosuppressive disease (e.g. HIV).
- Diabetes.
- Anismetropia.
- Astigmatism of greater than 1.00D in either eye.
- Eye injury or eye surgery within eight weeks immediately prior to enrollment for this study.
- Previous refractive surgery, rigid contact lens wear, orthokeratology, keratoconus, or other corneal irregularity in either eye
- Strabismus in either eye
- Pupil or lid abnormality or infection in either eye
- Central corneal scar and 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 clinical trials aimed to control myopia progression
- Surgically altered eyes, ocular infection of any type, ocular inflammation
- Subject has anterior chamber angle grade 2 or narrower
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: SINGLE
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
|---|---|
|
EXPERIMENTAL: Test Soft Contact Lens B
Lenses will be worn in a daily disposable modality
|
Test lenses to be worn in daily wear modality
|
|
EXPERIMENTAL: Test Soft Contact Lens C
Lenses will be worn in a daily disposable modality
|
Test lenses to be worn in a daily wear modality
|
|
ACTIVE_COMPARATOR: Spectacle Lenses
Control spectacle lenses worn daily.
|
Control spectacle lenses to be worn in a daily wear modality
|
What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Axial Length (Axial Elongation)
Time Frame: Baseline and every 6 months post-baseline up to 3 years
|
Axial Length was measured with the IOLMaster at baseline, and then every 6 months throughout the course of the study.
Five measurements were collected for each eye at each visit and the average of the 5 measurements were used for the analysis.
Higher values of axial elongation indicate worse vision.
|
Baseline and every 6 months post-baseline up to 3 years
|
|
Spherical Equivalent Refraction
Time Frame: Baseline and every 6 months post-baseline up to 3 years
|
Spherical Equivalent Refraction was computed from the sphero-cylindrical refraction measured with an open-field auto refractor.
The median of 3 repeated measurements, each of which was the average of 3 consecutive readings, was used for the analysis.
Higher values of spherical refraction indicate progression in Myopia.
|
Baseline and every 6 months post-baseline up to 3 years
|
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
Additional Relevant MeSH Terms
Other Study ID Numbers
Other Study ID Numbers
- CR-1561AC
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