Yes, I saw in numerous places that Visas Marr is a Miraluka. UNfortunately, I cannot remember where. Perhaps a forum search for the first reference to "Miraluka" would be handy.
Perhaps there was an article stating "a blind miraluka is in your party," and this, logically synthesized with "Visas Marr is a blind Jedi Sentinel with covered eyes" yielded "Visas Marr is a Miraluka."
It only makes sense.