Mrzzy, Nah, the night blindness thing is due to congenital cataracts which were surgically removed back in the dark ages when I was a kid. Even my Mom said I was born forty years too early. (She really didn't mean that in a cruel way at all, just a comment on how far ophthamic surgical technique has advanced since the '50s.)

Anyways, the deed has been done, and sometimes I even amaze myself at what I can accomplish. I never know from one situation to another what I can and can't do. I just have to give it a go.