legal blindness

英 美
  • 法定盲
  • blindness n.盲目;失明;愚昧
  • legal adj.法定的;法律的;合法的
Noun:
  1. vision that is 20/200 or worse in both eyes (20/200 vision is the ability to see at 20 feet what a normal eye can see at 200 feet)