We know that when the color of the lens is darker, the pupils hidden behind it are relatively enlarged, just like our pupils are enlarged in less light at night compared to more light during the day. In the case of dilated pupils, the eyes themselves have relatively weak defense against harmful ultraviolet rays.
So are all darker colored sunglasses 100% UV resistant? If not, is it because we wear darker colored sunglass near me, which cause the pupils to enlarge relatively and instead allow our eyes to absorb more harmful ultraviolet rays?
We first assume that all sunglasses circulating in the eyeglass mart are qualified and have 100% UV resistance. But can you guarantee that your sunglasses will still perform outstandingly after wearing them for some time? If the performance shows degradation, does it mean that sunglasses, like food, have a shelf life? Will it cause significant damage to the eyes after the expiration date?
Testing the performance of sunglass near me by exposing them to sunlight for 50 hours, it was found that the UV resistance of the sunglasses decreased significantly to varying degrees.
What does this mean? Yes! It indicates that your sunglasses have a strict shelf life, even high-quality sunglasses have such a shelf life. The best sunglasses can be worn and used for a maximum time.
Finally, do not judge the eye protection ability of glasses based on the color of the lenses. And should be based on scientific data.
