The Hong Kong progressive lens myopia control study: study design and main findings.

@article{Edwards2002TheHK,
  title={The Hong Kong progressive lens myopia control study: study design and main findings.},
  author={Marion Edwards and Roger W Li and Carly S Y Lam and John Kwok-fai Lew and Bibianna Sin-ying Yu},
  journal={Investigative ophthalmology & visual science},
  year={2002},
  volume={43 9},
  pages={2852-8}
}
PURPOSE To determine whether the use of progressive addition spectacle lenses reduced the progression of myopia, over a 2-year period, in Hong Kong children between the ages of 7 and 10.5 years. METHODS A clinical trial was carried out to compare the progression in myopia in a treatment group of 138 (121 retained) subjects wearing progressive lenses (PAL; add +1.50 D) and in a control group of 160 (133 retained) subjects wearing single vision lenses (SV). The research design was masked with… CONTINUE READING

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