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Old 13th Jun 2012, 13:53
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Monty1977
 
Join Date: Feb 2010
Location: Holland
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Ishihara plates
hi guys,

Two years ago I did an Ishihara 24 test and passed this test.
Now last week I took this Ishihara 24 test again (but at another AME) and I failed!

My question is: are there different Ishihare 24 tests, or are all Ishihara test identical?

Thanks!
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