Wednesday, March 04, 2015

Did you know?



Did you know?
  • 20/20 vision means that you can see normally from 20 feet away compared to others.
  • 20/15 vision means you can see at 20 feet what others can see at 15, so your vision is better.
  • 20/40 vision means that you can see at 20 feet what others can see at 40, so your vision is worse.
  • 20/200 vision means that you can see at 20 feet what others can see at 200, and you are legally blind.

No comments:

Post a Comment