DS DS/EN ISO 10342
DS DSEN SO 10342 2010-JUL-07 Ophthalmc nstruments - Eye refractometers
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This International Standard, together with ISO 15004-1, specifies requirements and test methods for eye refractometers using an objective measuring principle. It is limited to the measurement of spherocylindrical refractive error. This International Standard takes precedence over ISO 15004-1, if differences exist.