What number is that?

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The term 'daltonism' comes form the name of English chemist John Dalton, who published the paper "Extraordinary facts relating to the vision of colours" in 1798, after the realization of his own colour blindness.
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Very interesting!
reach: rather globalcolor blindnesscolorsmedicinenumbers

Answers by country

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answers
flagthe Philippines
0%
0%
7%
92%
28
flagPakistan
2%
0%
6%
91%
46
flagMalaysia
0%
0%
4%
90%
22
flagNigeria
0%
0%
10%
89%
19
flagItaly
0%
0%
13%
86%
23
flagAustralia
4%
0%
8%
85%
47
flagSweden
0%
7%
7%
84%
13
flagthe United States
0%
0%
15%
82%
465
flagRepublic of Ireland
0%
4%
16%
79%
24
flagthe United Kingdom
0%
0%
21%
78%
185
flagSouth Africa
0%
0%
21%
78%
14
flagIndia
1%
3%
17%
76%
229
flagthe Netherlands
0%
0%
25%
75%
16
flagGermany
1%
1%
23%
74%
358
flagAustria
0%
0%
26%
73%
52
flagGreece
0%
0%
26%
73%
23
flagUnknown
4%
0%
22%
72%
22
flagPoland
0%
0%
26%
71%
18588
flagSwitzerland
2%
0%
28%
69%
39
flagCanada
0%
0%
33%
63%
36