This is the ValueSet that contains all the codes in IVR valueset eye Form (.143.11.43) (http://fhir.ch/ig/ch-ems/ValueSet/IVR-VS-eyeForm) and IVR Eye Form (http://fhir.ch/ig/ch-ems/ValueSet/IVR-VS-eyeForm). E.g. what you have to deal with if you get resources containing codes in either of them