We often see a lot of articles about how to choose eyewear that suit you. In my opinion, choosing the perfect eyewear should be clear, comfortable, long-lasting, beautiful and stable. Yes, the eyewear must be stable when worn on the face. If the eyewear are unstable, the eyewear will often slide down, which will cause many problems, especially myopia eyewear. When matching eyewear in an optical shop, they will generally test your various data, power, interpupillary distance and astigmatism, etc. Its meaning is to make the eye see through the optical center point of the lens as much as possible, if the eye does not pass the optics Looking at the world from the center point will produce a prism effect, causing eye fatigue, which will increase the degree unknowingly and cause damage to the eyes. If the eyewear often fall, it will cause the optical center point of the eyewear to deviate, then the eyewear must be adjusted or a new pair of correct eyewear must be bought. I hope the following...