No, it's not one for each eye.

20/40 is half the acuity of 20/20, and 20/10 is double the acuity of 20/20.

Posted By: Arizona Bay on July 18th 2008 at 12:16:10

Message Thread

20/20 vision. What is that? I've never really known. (n/m) (General Chat) - CB41, Jul 18, 11:56:30
- In the term "20/20 vision" the numerator refers to the distance in feet from which a perso (General Chat) - Arizona Bay, Jul 18, 11:59:48
  - But why 2 "20's"? Is it one for each eye? If so, (General Chat) - CB41, Jul 18, 12:09:02
    - No, it's not one for each eye. (General Chat) - Arizona Bay, Jul 18, 12:16:10
      - Blimey, not sure I'm glad I asked now:-( (n/m) (General Chat) - CB41, Jul 18, 12:17:46
  - 6/6 is the closeup version (General Chat) - camcan, Jul 18, 12:01:02
    - I always thought[*] that 6/6 was the metric equivalent of 20/20. (General Chat) - Arizona Bay, Jul 18, 12:02:25
      - Happy to be proved wrong (General Chat) - camcan, Jul 18, 12:04:10
        
        I'm seriously considering laser eye surgery, but don't mind admitting to being a little sc (General Chat) - Arizona Bay, Jul 18, 12:08:22
        
        It's a tough call (General Chat) - camcan, Jul 18, 12:11:34
        
        Don't think I'd get on with contacts. I am very squemish about putting thing in my eyes. (General Chat) - Arizona Bay, Jul 18, 12:23:19
        
        have you tried specatacles? (n/m) (General Chat) - Tomblander, Jul 18, 12:25:54
        
        Yes, I like my specs. (n/m) (General Chat) - Arizona Bay, Jul 18, 12:27:05
        
        Don't put them up your arse then. This will help in two ways: (General Chat) - CB41, Jul 18, 12:10:52
- when you can watch cricket without going mad from boredom (n/m) (General Chat) - Dave in France, Jul 18, 11:58:02

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