Myopia Progression and Orthokeratology Lens Wear
Suspended
- Conditions
- Progressing mild late-onset myopiaEye - Diseases / disorders of the eye
- Registration Number
- ACTRN12606000054516
- Lead Sponsor
- Dr Helen Owens, Senior Lecturer, Department of Optometry, University of Auckland
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Suspended
- Sex
- All
- Target Recruitment
- 50
Inclusion Criteria
All participants are required to have myopic refractive error between -1.00D and -3.25D; to provide evidence of myopia progression in the past 6 months (approx. -0.5D); free of ocular disease or any contraindication to RGP lens or soft lens wear; have with the rule corneal toricity of <1.50D; have no history of current RPG lens wear and both eyes correctable to at least 6/6
Exclusion Criteria
Anisometropia >1.00D, abnormal binocular vision, ocular pathology, systemic disease with ocular complications, active anterior surface disease that would preclude contact lens wear.
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method The primary outcome measure is the difference in myopia progression in the orthokeratology lens wearing eyes compared with the eyes wearing single vision soft contact lenses.[The outcome measure will be taken at 3, 6 and 9 months after the commencement of wear for each type of contact lens.]
- Secondary Outcome Measures
Name Time Method 1) To compare the accommodation response (focusing accuracy) in participants during orthokeratology lens wear compared with that during soft lens wear over periods of 9 months for each lens modality.[Measurement will be taken at 3, 6 and 9 months for each lens type.];2) To determine objectively the visual function in central and paracentral retinal areas with orthokeratology lenses compared with soft contact lenses.[Measurement will be taken at 3, 6 and 9 months for each lens type.]