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