PD IS0/TS 6838:2024 BSl Standards Publication Ophthalmic optics Contact lenses - Tolerances and methods for measurement of multifocal contact lens addition power bsi. PDIS0/TS6838:2024 PUBLISHEDDOCUMENT National foreword ThisPublishedDocument is theUK implementation ofIS0/TS6838:2024. The UK participation in its preparation was entrusted to Technical CommitteeCH/172/9,Contactlenses and contactlenscareproducts. A list of organizations represented on this committee can be obtained on request to its committee manager. Contractualand legal considerations This publication has been prepared in good faith, however no representation,warranty,assurance orundertaking (express or implied) is or will be made, and no responsibility or liability is or will be acceptedbyBsIinrelationtotheadequacy,accuracy,completeness or reasonableness of this publication.All and any such responsibility and liabilityis expressly disclaimed tothefull extentpermittedbythe law. This publication is provided as is, and is to be used at the recipient's own risk. The recipient is advised to consider seeking professional guidance with respect to its use of this publication. This publication is not intended to constitute a contract. Users are responsible for its correctapplication. This publication is not to be regarded as a British Standard. @TheBritishStandardsInstitution2024 PublishedbyBSIStandards Limited2024 ISBN 978 053917637 7 ICS 11.040.70 Compliance with a Published Document cannot confer immunity from legal obligations. This Published Document was published under the authority of the StandardsPolicyandStrategyCommitteeon31July2024. Amendments/corrigendaissued sincepublication Date Text affected PDISO/TS6838:2024 Technical ISO Specification ISO/TS 6838 First edition Ophthalmic optics Contact lenses 2024-07 - Tolerances and methods for measurement of multifocal contact lens addition power OptiqueophtalmiqueLentillesdecontact-Toleranceset méthodes demesurede lapuissanceadditionnelledes lentilles de contactmultifocales Referencenumber ISO/TS6838:2024(en) @ISO2024