What is the difference between dozens of sunglasses and hundreds of sunglasses?
Sunglasses are really a great thing to use, even for people with average looks, their temperament immediately improves after wearing sunglasses. It's cool no matter how it looks! However, there are too many styles and brands of sunglasses, ranging from tens of yuan to hundreds of yuan.
Some people may ask, although inferior sunglasses are cheap, they are better than not wearing them, right? wrong! If the quality of sunglasses is substandard, it's better not to wear them. There are two reasons:
1. Permanent eye injury
Wearing sunglasses can cause the light to dim, leading to an increase in pupils. However, since your sunglasses cannot block ultraviolet rays, it is equivalent to consuming a large amount of ultraviolet rays into the dilated pupils, which is even more harmful to the eyes than not wearing them! Moreover, the damage of ultraviolet rays to the eyes is cumulative and irreversible.
What is the difference between dozens of sunglasses and hundreds of sunglasses?
2. Impairment of vision
This is mainly a matter of workmanship. Ordinary glasses, whether sunglasses or other glasses, have a reasonable optical index design, including steradian, prism degree, etc. If the design is unreasonable, it is easy to deform the vision, causing double fatigue of the eyes, and the vision will decline in the long run.
Good sunglasses are fully UV resistant in terms of function; Optically reduce visual distortion and protect vision; Comfortable and sturdy to wear, as well as tall design and brand power, there are a large number of people willing to pay high prices!
