[@TheRedWatcher] Partially blind like they're missing an eye is fine but it they're almost blind that might be an issue. Along with with deafness (assuming total deafness), its unlikely they would actually be in a position to take place in the RP beyond a diet Tyrion Lannister. There's nothing like sign language so they'd have to just write out everything and glassmaking in use for lens hasn't gone beyond telescopes and navigational equipment.