The portal for submitting your paper(s) for the JOSA A special issue is now open and shall remain so until 1 October.

For details See:



All current ICVS memberships will expire on 31/12/21.  To renew your membership, please revisit this page in a few days' time.  We will be accepting renewals or new members towards the end of December 2021.  Honorary memberships will be renewed automatically.
August 2021:  We have just mailed out the latest issue of Daltoniana (#118) to all who requested it via your GDPR permissions.  If you haven't received a copy, please send a message via the contact page.  Daltoniana 117 is now available for download.  We now have a complete set of back issues, including the missing issue 89 (thanks to John Mollon).
The annual meeting website is now active.  Pease visit regulalrly for updates.  It can be found at
In response to the current pandemic, we have postponed the next meeting until 2022.  Therefore we have decided to extend all current memberships for a year. 

If your current membership was due to expire on December 31st 2020, it will be automatically be extended until December 31st 2021.

If you are not currently a member, but wish to join the society for the remaining year, please get in touch via the 'contact us' page.