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Which of the following is the worst for eyesight during a sunny day?

wearing sunglasses with UV filter
wearing sunglasses without UV filter
not wearing sunglasses at all
wearing sunglasses inside buildings
Wearing sunglasses without UV filter causes the pupils to dilate and eyes to absorb more UV rays than they normally would without the sunglasses. Hence, it's much better not to wear sunglasses at all, than to wear ones without UV filter.
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Answers by country

wearing sunglasses with UV filter
wearing sunglasses without UV filter
not wearing sunglasses at all
wearing sunglasses inside buildings
answers
flagAustria
0%
82%
11%
5%
17
flagPakistan
4%
78%
14%
2%
41
flagGermany
2%
68%
25%
3%
126
flagItaly
7%
64%
28%
0%
14
flagNorway
0%
58%
41%
0%
12
flagCanada
9%
56%
28%
3%
32
flagAustralia
0%
55%
37%
4%
43
flagRepublic of Ireland
0%
53%
36%
9%
41
flagthe Netherlands
4%
52%
28%
14%
21
flagNigeria
26%
47%
21%
5%
19
flagGreece
11%
47%
35%
5%
17
flagPoland
3%
46%
36%
12%
13607
flagthe United Kingdom
5%
46%
39%
8%
158
flagthe Philippines
15%
45%
25%
10%
20
flagthe United States
5%
40%
44%
8%
240
flagIndia
13%
35%
33%
15%
216
flagEgypt
14%
35%
28%
14%
14
flagthe United Arab Emirates
10%
30%
40%
20%
10

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