Controlling Myopia Progression With Soft Contact Lenses
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Detailed Description
Study Type
Study Type
Enrollment (Actual)
Enrollment
Phase
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
-
Tianjin, China, 300020
- The Tianjin Eye Hospital
-
-
Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Myopic subjects between 8 and 12 years of age.
- The subject 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
- 1.00D or less difference in spherical equivalent between the two eyes
- The subject must have a best-corrected visual acuity of 0.8+2 (20/25+2) and spherical equivalent refraction visual acuity of 0.820/25) or better in both eyes
- The subject must have at least 8D of accommodation
- The subject and subject's parent or legal guardian must read and sign the STAEMENT OF INFORMED CONSENT
- The subject must appear able and willing to adhere to the instructions set forth in this clinical protocol.
Exclusion Criteria:
- Any ocular or systemic allergies or diseases that may interfere with contact lens wear.
- Systemic disease or autoimmune disease or use of medication (e.g. antihistamine), which may interfere with 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
- Astigmatism of greater than 1.00D in either eye
- Eye injury or surgery within eight weeks immediately prior to enrollment for this study.
- Pervious refractive surgery, rigi contact lens wear, orthokeratology, keratconus or other corneal irregularity in either eye.
- Strabismus in either eye
- Pupil orr 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
- 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 Assignment
- Masking: Single
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
|---|---|
|
Experimental: Test Lens 1
Investigational soft contact lenses worn daily.
|
Investigational soft contact lens with asperic optical design to control myopia progression.
|
|
Experimental: Test Lens 2
Investigational soft contact lenses worn daily.
|
Investigational soft contact lens with asperic optical design to control myopia progression.
|
|
Active Comparator: Control lens
Spectacle lenses worn daily.
|
Spectacle Lenses.
|
What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Spherical Equivalent Refraction
Time Frame: Baseline and every 6 months post-baseline for 2 years
|
Spherical equivalent refraction was computed from the sphero-cylindrical refraction measured with an open-field auto refractor (WAM-5500) and descriptively summarized for each follow-up.
Higher spherical refraction indicates progression in Myopia.
|
Baseline and every 6 months post-baseline for 2 years
|
|
Axial Length (Axial Elongation)
Time Frame: Baseline and every 6 months post-baseline for 2 years
|
Axial length was measured with the IOLMaster at baseline and every 6 months post-baseline for 2 years.
Axial length was descriptively summarized for each follow-up.
|
Baseline and every 6 months post-baseline for 2 years
|
Collaborators and Investigators
Sponsor
Sponsor
Investigators
Investigators
- Principal Investigator: Xu Cheng, MD, PhD, Principal Clinical Scientist
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-1561AB
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