People who don't qualify as legally blind but have extreme vision impairment would like to talk to you. My stepson is profoundly deaf but still has hearing and wears hearing aides to assist him, he'll often read lips during conversations to supplement that audio information and that can result in pretty big communication breakdowns.

Pretty much everything in life is a spectrum of possibilities - trying to boil those down to binary states can be helpful for some purposes but is never clean.