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.
reach: rather globaleyesglasseslightmedicineopticssight
Answers by country
wearing sunglasses with UV filter
wearing sunglasses without UV filter
not wearing sunglasses at all
wearing sunglasses inside buildings
answers
Austria
16
Pakistan
41
Germany
105
Italy
14
Australia
41
Canada
31
Norway
12
Republic of Ireland
40
the Netherlands
18
Nigeria
19
Poland
13388
Greece
13
the United Kingdom
148
the Philippines
19
India
214
Egypt
14
the United States
203
the United Arab Emirates
10