This says it all really.
I am GUESSING that some people think "visually impaired" is insensitive?
http://www.nhs.uk/conditions/Visual-impairment/Pages/Introdu...
BUT I wouldn't apply that inference to someone with a foreign accent, even a British accent. It's a fine point of style that I can't assume will translate across dialects. (For example, "I saw a German on the bus today" would be much less weird than "a Chinese" to anyone speaking my dialect. How do we know? We just know.) So here I think mbrookes has the wrong idea.
Do you feel there's a lot someone could learn about you that isn't immediately clear from your comment above? Or does it "say it all" about you?
That said, I'm glad they seem to be working with blind/visually-impaired folks. I hope they likewise staff their company with blind developers/designers as well, since we're still not terribly well-represented in tech, and it always makes me a little sad to see companies building products for us, but only involving us in the testing/final steps. I'd love to hack on something like this myself, and have played with Arduino-based echolocation augmentation for help with solo cycling/sports/other non-basic use cases. I hope there are blind developers working with you on the firmware.