I tell people, but I tell them in passing. In general I find people won't make a big deal out of it if you don't. I also have a visual handicap (can't see 3D) and it's the same thing, people might get a little curious if they've never heard of it before but otherwise it doesn't bother them... they've got their own challenges, I'm sure.
That's the extent to which I talk about it, though. When I really want to pour my heart out, I go on forums instead ; )