Why Need A Pair of Sunglasses?

Views: 130     Author: Site Editor     Publish Time: 2020-06-10      Origin: Site

Why Need A Pair of Sunglasses?

Various types of outdoor sunglasses, UV protection sunglasses, polarized uv400 sunglasses, fashionable shade sunglasses, trendy vintage sunglasses on the market are reminding us that we need a pair of sunglasses, but do you know how to choose sunglasses? What kind of sunglasses really suit me? Let us find the answer together in the article. 



Why wear sunglasses?


In summer, if you stay outdoors for a long time, the strong sunlight will not enter the eye without obstruction. In the long run, it may cause damage to the conjunctiva in the eye, such as the oxidation of lens epithelium. In addition, when you suddenly switch from a strong light environment to a dark environment, the eyes have a dark adaptation process. After a while, you can see the dark objects. If the eyes are not protected, the strong light directly enters the eyes, and the dark adaptation ability will decrease. There is 1-2 seconds to see the objects clearly but not to distinguish them carefully. So in order to protect the eyes, in the summer, a pair of uva uvb protection sunglasses or uv400 protect polarized sunglasses is very important.



How to choose sunglasses


Look at the lens color


The dark-colored sunglasses have good filtering ability to strong light and ultraviolet rays, which is accompanied by poor permeability, which will affect the clarity of the vision. Dark sunglasses are suitable for use in places where the sun is severe, such as the seaside. Those who are engaged in welding and other work due to special purposes need to wear darker protective glasses. Under normal outdoor conditions, gray or brown sunglasses can be worn. These two colors have good filterability and color perception, and can distinguish various colors. Not recommended for yellow, red, blue, green, etc., will affect the resolution of surrounding colors.



Look at the lens size


The visual imaging area in front of the eyes must be covered by lenses. If the selected sunglasses lens is too small, you may have no problem looking straight ahead, but raise your eyes slightly to see the area above the front, and the strong light will stimulate your eyes. It is not necessary to choose oversized sunglasses. The glasses are too heavy to put a burden on the nose bridge, and people with small faces can easily slip off.



The role of sunglasses


Ultraviolet rays can damage the cornea and retina, and high-quality sunglasses can completely eliminate the ultraviolet radiation. When the eye receives too much light, it naturally shrinks the iris. Once the iris contracts to its limit, then people need to squint. If the light is still too much, such as the sunlight reflected by the snow, it will damage the retina. High-quality uv protection sunglasses can filter up to 97% of the incident light to avoid injury.


Yellow lens sunglasses can filter ultraviolet rays 100%, allowing infrared and 83% visible light to penetrate the lens. Its biggest feature is that it can filter most of the blue light dazzling under the sun. After sunlight passes through the atmosphere, it mostly appears as blue light, which is why you see the sky is blue. After the blue lens filters the blue light, the natural scenery can be seen more clearly. Therefore, wearing yellow lenses and sunglasses while driving, you can see the traffic more clearly.


There is indeed a difference between various sunglasses. According to the specific use environment, choosing the right and high-quality sunglasses will provide you with maximum protection. Welcome to consult us to select the big fashion sunglasses that suit you best.

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