MUNDANE MYSTERIES: What Is 20/20 Vision?

MUNDANE MYSTERIES: What Is 20/20 Vision?

    Many people will say with pride, “Yeah, I’ve got 20/20 vision”. But, what even is that? What do those numbers mean? The overall figure is your “Visual Acuity Grade”. And the first number is always 20, because the 20 refers to the distance from which you’re supposed to be sitting or standing from…