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Multiple segment spectacle lenses for myopia control. Part 2: Impact on myopia progression
Hema Radhakrishnan1, Carly Siu Yin Lam2,3, W Neil Charman1
1School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
Multiple segment spectacle lenses effectively slow childhood myopia progression. Two lens designs showed similar efficacy, with initial control rates of 60-80% decreasing to 35-55% over two years.
Area of Science:
- Ophthalmology
- Optometry
- Pediatric Eye Care
Background:
- Childhood myopia and axial eye growth are significant concerns.
- Multiple segment (MS) spectacle lenses have shown promise in slowing myopia progression.
Purpose of the Study:
- To compare the effectiveness of two distinct MS spectacle lens designs.
- To investigate the mechanism of myopia control provided by MS lenses.
Main Methods:
- Analysis of published data from two clinical trials involving Chinese children.
- Comparison of myopia progression (SER and AL changes) over at least two years.
- Evaluation of two MS lens designs: MiyoSmart (DIMS) and Stellest.
Main Results:
- Both MS lens designs demonstrated comparable efficacy in myopia control.
- Initial efficacy ranged from 60-80%, declining to 35-55% over two years.
- Myopia control effect appeared absolute rather than proportional.
Conclusions:
- MS spectacle lenses represent a valuable tool for managing childhood myopia progression.
- Further research is needed to elucidate the precise mechanism of action and optimize MS lens design.
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