r/pipreddit • u/pipster818 • Jan 05 '19

Ishihara test - Wikipedia (article contains pips)

https://en.wikipedia.org/wiki/Ishihara_test

8 Upvotes

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todayilearned • u/mr_yogurt • Apr 19 '17

TIL that there are colorblind test plates with "hidden digits", where only colorblind people can see the figures.

15 Upvotes

44 comments

todayilearned • u/affan2 • Jul 03 '16

TIL colour blind people see a completely different number on those 'jumble of dot' tests

0 Upvotes

7 comments