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Which items, named after a Dutchman, traditionally feature only ten different letters of the alphabet, and which numerical phrase associated with their use doesn't indicate the perfection that most people think it does?
Question
#92528. Asked by gmackematix. (Feb 18 08 8:57 PM)
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queproblema
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How about a hint?
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gmackematix
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Well, if you can't see it yet then maybe there's someone you should visit...
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zbeckabee

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Only the ten letters C, D, E, F, L, N, O, P, T, Z are used in the traditional Snellen chart.
http://en.wikipedia.org/wiki/Snellen_chart
If you have 20/20 vision, it means that when you stand 20 feet away from the chart you can see what the "normal" human being can see. This does not mean that you have PERFECT vision.
http://health.howstuffworks.com/question126.htm
Herman Snellen (February 19, 1834, Zeist - January 18, 1908) was a Dutch ophthalmologist who introduced the Snellen chart to study visual acuity (1862).
http://en.wikipedia.org/wiki/Snellen
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gmackematix
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Well done, Zbeck! You've got the bottom line on that one.
I can't see the metric version of the phrase "6/6 vision" catching on any time soon.
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