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ISO 9801:2009 Ophthalmic instruments - Trial case lenses
standard by International Organization for Standardization, 01/01/2009
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Full Description
ISO 9801:2009 specifies requirements for mounted ophthalmic full and/or reduced aperture trial case lenses for the determination of the refractive error of the eye.
ISO 9801:2009 takes priority over ISO 15004-1, if differences exist.