How to choose good quality and functional sunglasses

First of all, you must determine whether the purpose of your purchase is for shading, or for matching clothing and decoration; in addition to shading, whether there are requirements for anti-ultraviolet function; whether there are special requirements for the safety performance of lenses; design your own sunglasses with logo，The actual effect of my face, in order to buy a suitable pair of sunglasses.


One is the "sunshade mirror". People usually adjust the luminous flux by adjusting the pupil size in the sun. When the light intensity exceeds the adjustment ability of the human eye, it will cause damage to the human eye. Sunshade mirrors can block sunlight and reduce fatigue caused by over-regulation of the eyes or damage caused by strong light stimulation;


The other type is "light-colored sunglasses", which is also a more popular variety in recent years. It mainly plays a decorative role and can also be used when the sun is not strong. If the wearer mistakenly uses such glasses as sunshade glasses, it will not only fail to provide the effect of sunshade, but may also damage people's eyes.


The choice of the color of the lens should be determined according to the place where the activity is required. For different light sources and occasions, the color of the lens will affect the shading effect.


Finally, when choosing, pay attention to the smooth surface of the lens, no ripples, no blemishes, no bubbles, no wear marks, lay the lens flat, and see the lens from the horizontal direction without warping. Then move the glasses up and down and back and forth. If it is found that the straight line is distorted or swayed, it means that the lens is deformed and should not be purchased.


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