Who should you expect to show stronger red-eye effect?

blue-eyed people
brown-eyed people
elders
there is no difference
The iris plays no role in the effect, but the blue-eyed people have rel­a­tive­ly low melanin in the fundus as well. There­fore, they show a much stronger red-eye effect, as the light passing fundus is not absorbed by melanin. The role of melanin in red-eye effect is nicely demon­strat­ed in case of het­e­rochro­mia (one eye blue, one brown): typ­i­cal­ly, only the blue eye displays the effect.

Answers distribution

blue-eyed people
brown-eyed people
elders
there is no difference
answers
flagCanada
72%
11%
0%
16%
18
flagItaly
72%
11%
0%
16%
18
flagRepublic of Ireland
70%
0%
0%
30%
10
flagGermany
66%
8%
0%
25%
72
flagAustria
60%
20%
0%
20%
10
flagPoland
57%
14%
1%
26%
5176
flagthe United Kingdom
57%
13%
2%
27%
147
flagthe United States
54%
19%
2%
23%
217
flagIndia
50%
16%
4%
27%
61
flagFrance
50%
21%
0%
28%
14
flagNorway
50%
30%
0%
20%
10
flagUnknown
42%
25%
2%
28%
35
flagthe Netherlands
35%
0%
0%
64%
14

Gender

men53%
women62%
blue-eyed people
53%
62%
brown-eyed people
17%
14%
elders
1%
0%
there is no difference
26%
22%

Details

Author: Kantapat Rassamee
Illustration: Michael Miller
tools
Should this question be improved? Improve it.
Globalquiz questions are translated by users for other users. Translate this question.