Having a colour blindness test at junior school.
Here are some subtle tone equal tests to test for color blindness. Once Eli knows his numbers we will have to do this since this color blindness runs in our family.
Color blindness test. Red green color blind
I may not be color blind, but I definitely didn’t get all of these right.
Ishihara Color Blindness Test 19 Answer
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Starting at Square One: Survival Tips for Traveling and Living with the Color Blind. A fun, but informative lesson on colorblindness
Ishihara Color Blindness Test 2
Mega Color Blindness Test - http://www.moillusions.com/mega-color-blindness-test/
Ishihara’s Test for Colour Deficiency:38 Plates Edition | Colblindor