It would depend on if they're legally blind are, fully blind, and if they've been that way since birth or not. If they've actually had eyesight in the past, it'd be easier to describe me as far as descriptiveness is concerned. But if they've been blind for their whole life and are fully blind, (i.e. like Tommy Einstein) I'd try to leave my personality up to interpretation, because I wouldn't want to feel like I described myself wrong. Dealing with a handful of blind folks at work throughout the years and hearing it from other's it's one's personality who shines, not their physical features.