Controlling Myopia Progression With Soft Contact Lenses
1 other identifier
interventional
221
1 country
1
Brief Summary
This study is to investigate whether novel soft contact lens optical designs can slow myopia progression.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Apr 2007
Typical duration for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
April 1, 2007
CompletedPrimary Completion
Last participant's last visit for primary outcome
April 1, 2010
CompletedStudy Completion
Last participant's last visit for all outcomes
April 1, 2010
CompletedFirst Submitted
Initial submission to the registry
February 6, 2013
CompletedFirst Posted
Study publicly available on registry
February 11, 2013
CompletedResults Posted
Study results publicly available
July 29, 2015
CompletedJune 19, 2018
April 1, 2018
3 years
February 6, 2013
July 1, 2015
June 18, 2018
Conditions
Outcome Measures
Primary Outcomes (2)
Axial Length (Axial Elongation)
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
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
Study Arms (3)
Test Soft Contact Lens B
EXPERIMENTALLenses will be worn in a daily disposable modality
Test Soft Contact Lens C
EXPERIMENTALLenses will be worn in a daily disposable modality
Spectacle Lenses
ACTIVE COMPARATORControl spectacle lenses worn daily.
Interventions
Test lenses to be worn in a daily wear modality
Eligibility Criteria
You may qualify if:
- 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
You may not qualify if:
- 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
- +4 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
The Hong Kong Polytechnic University
Hung Hom, Kowloon, Hong Kong
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Results Point of Contact
- Title
- XU CHENG, PRINCIPAL CLINICAL SCIENTIST
- Organization
- Vistakon, USA
Publication Agreements
- PI is Sponsor Employee
- Yes
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- INVESTIGATOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
February 6, 2013
First Posted
February 11, 2013
Study Start
April 1, 2007
Primary Completion
April 1, 2010
Study Completion
April 1, 2010
Last Updated
June 19, 2018
Results First Posted
July 29, 2015
Record last verified: 2018-04