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YY 0477-2016 English PDF (YY0477-2016)

YY 0477-2016 English PDF (YY0477-2016)

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YY 0477-2016: Rigid gas permeable contact lenses for orthokeratology
This Standard specifies the terms and definitions, requirements, test methods, sampling and inspection rules, marks, labels and accompanying data, packaging for rigid gas permeable contact lenses for orthokeratology (hereinafter referred to as orthokeratology lenses). Orthokeratology lenses are expected to be used by temporarily altering corneal morphology in order to achieve temporary correction of refractive errors.

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