Rotties are on the A Schedule for eye testing under the KC/BVA scheme for MRD - Multifocal retinal dysplasia and the B Schedule for MOD, PPM - Multiocular defects and Persistent pupillary membrane
Results of examinations for conditions on Schedule A are recorded on the Kennel Club registration database. Results are also published in the KC Breed Records Supplement and appear on registration documents. The exception to this is MRD affected results (apart from Rottweilers which will list unaffected as well as affected as this is the only eye condition which these breeds are examined for under the scheme) which are maintained on an 'Open Register'; copies of which are available free of charge upon request.
Schedule B is for conditions that are under investigation.
Eye tests are normally done annually however I am not sure if any of the above can be optigen tested (eg once only)?
You do not have to wait for a breed club to organise an eye testing session there are lots of group sessions held all over the UK but many people have their dogs routinely checked via their own vet or one near them.
http://www.thekennelclub.org.uk/item/2645