Overview
The purpose of this study is to examine the efficacy and performance of the Defocus Incorporated Multiple Segments (DIMS) Spectacle lenses on controlling myopia progression in fast progressing myopic children.
Description
DIMS spectacle lens is a multifocal spectacle lens that produces myopic defocus images and corrects distance refractive errors at the same time.
Participants will be prescribed a pair of DIMS spectacle lenses. Their cycloplegic refraction and axial length will be monitored every 6 months over 2 years.
Eligibility
Inclusion Criteria:
- SER: -1.00D or below
- Documented history of fast progressing myopia, either in SER or AL
- SER progression: 0.50D/year or more
- AL elongation: 0.27mm/year or more
- Best-corrected monocular visual acuity (VA) in both eyes: 0.00 logMAR (equivalent) or better
- Acceptance of random group allocation and the masked study design
- Anisometropia of 1.50 D or less
- Astigmatism of 2.00 D or less
Exclusion Criteria:
- Strabismus and binocular vision abnormalities
- Ocular and systemic abnormalities
- Prior experience of myopia control