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

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flagthe Philippines
0%
0%
7%
92%
26
flagPakistan
2%
0%
6%
91%
46
flagNigeria
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0%
10%
90%
10
flagItaly
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10%
89%
19
flagMalaysia
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0%
5%
88%
17
flagSweden
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7%
7%
84%
13
flagAustralia
4%
0%
9%
83%
43
flagthe United States
0%
0%
16%
81%
409
flagRepublic of Ireland
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5%
15%
78%
19
flagthe United Kingdom
0%
0%
21%
77%
147
flagIndia
1%
2%
16%
76%
207
flagGermany
1%
2%
21%
74%
128
flagGreece
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0%
26%
73%
23
flagUnknown
4%
0%
22%
72%
22
flagSouth Africa
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0%
27%
72%
11
flagPoland
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0%
26%
71%
17653
flagSwitzerland
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0%
29%
70%
17
flagAustria
0%
0%
35%
64%
14
flagCanada
0%
0%
33%
61%
21
flagUkraine
0%
0%
50%
50%
10