Most people think it's rather ironic that I'm Legally Blind but my hobby is stamp collecting.
Being blind'ish actually comes in handy a lot when working on stamps. When I find stamps that are listed as engraved as well as engraved and litho, or issued as one set as engraved and another as litho, I can "read" my stamps very easily and quickly identify the different sets.
I only have sensation in my left index fingertip in one small place but it sure comes in handy for reading and identifying stamps!