How to join the EOS

Annual membership fees

Our annual membership fees for individuals, national optical societies, companies or institutes who wish to join the EOS directly are:

Payment options

Fast and secure credit card payment: join by purchasing an individual, student or corporate membership in the EOS online shop.

Credit card payment or bank transfer via fax form: join by filling in our membership fax form that can be downloaded here.
Important for bank transfer: please return the fax form indicating that fee will be paid by bank transfer. Please make sure the bank processing fees are not debited to the EOS and that the name of the new member is quoted.

Banking details:
Commerzbank Hannover
Bank code: 250 400 66
Account no.: 302 501 2
IBAN: DE76 2504 0066 0302 5012 00

Bank address:
Luisenstrasse 8-9
30159 Hannover, Germany

The EOS is a registered not-for-profit association under French law and thus exempted from sales tax. Association no.: 0913005648. SIRET no.: 384 459 475 00016.

How to join through an EOS Branch or Affiliated Society

If you have a national optical society in your country that is a Branch or Affiliated Society of the EOS you may join two societies at once by becoming a member of your national society and thus automatically a member of the EOS as well.
Please check the map of the national optical societies within the EOS to find out if your national optical society is a member of the EOS, or contact us at
Annual fee: determined by the EOS Branch or Affiliated Society.