None listed
Conditions
Brief summary
Newly published data suggests that children wearing Orthokeratology (OK) lenses demonstrate less myopia progression than an age-matched control group wearing spectacles. The findings lend some support to anecdotal claims by clinicians that Orthokeratology lenses appear to retard myopia progression. The aims of this work are to test the hypothesis that wearing Orthokeratology lenses reduces myopia progression compared with soft lenses in young adult myopes.
Interventions
Orthokeratology lenses will be prescribed for overnight wear to a group of participants for a period of 9 months,. At cross-over (after 9 months), the type of lens worn will be changed between the two groups of participants and the lenses will be worn for a further 9 months period.
Sponsors
Dr Helen Owens, Senior Lecturer, Department of Optometry, University of Auckland
Study design
Allocation
Randomised controlled trial
Intervention model
Crossover
Primary purpose
Prevention
Masking
Open (masking not used)
Eligibility
Sex/Gender
All
Age
0 to No maximum
Healthy volunteers
No
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.
Outcome results
None listed