ISO INTERNATIONAL STANDARD 19980 Third edition 2021-06 Ophthalmic instruments Corneal topographers Instruments ophtalmiques - Topographes de la cornee Reference number IS0 19980:2021(E) ISO ISO2021 IS0 19980:2021(E) COPYRIGHT PROTECTED DOCUMENT @ iS0 2021 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below or Iso's member body in the country of the requester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 0111 Email: copyright@iso.org Website: www.iso.org Published in Switzerland i @ IS0 2021 - All rights reserved