how to know if your current sunglasses are good
Hi, l bought a pair of sunglasses for 10$. They do not have any 100%
UV light sticker on them nor they are polarized, but the thing is that l
really like them. How can l know that they wont affect my vision? Because
l know that buying some cheap sunglasses can let UV light go trough the
Polarized sunglasses are very expensive & only useful in very
bright conditions where it is necessary to reduce glare from shiny objects
(e.g. when fishing, or in trafic). On the other hand they can cause
headaches & reduce detail of sight, so don't worry about having bought
polarized sunglasses or not.
The most important part is the UV protection. It is not necessary that they have 100% UV protection, but it is adviced to wear glasses that at least block 95% of UVA & 97% of UVB rays. That way they will offer you sufficient protection. This information is usually on the product label. To be sure they don't affect ur vision, you could also wear contact lenses that offer sufficient UV protection, like for example these: http://smartbuyglasses.com/contact-lenses/Weekly-Contacts/Precision-UV/76.html Hope this helps
I recommend the Polarized Sunglasses to you, don't buy cheap
sunglasses they had low content for preventing ray light.
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