Use classification of sunglasses

Sunglasses can generally be divided into three categories: sun-shading mirrors, light-colored sunglasses and special-purpose sunglasses.

The so-called sun-shading mirror, as the name suggests, is used for shading. People usually adjust the luminous flux by adjusting the size of their pupils in the sun. When the light intensity exceeds the adjustment ability of the human eye, it will cause damage to the human eye. Therefore, in outdoor activities, especially in summer, many people use sun-shading glasses to block the sun to reduce the fatigue caused by eye adjustment or the damage caused by strong light stimulation.

Light-colored sunglasses are not as good as sun-shielding mirrors, but they are rich in colors, suitable for use with all kinds of clothing, and have a strong decorative effect. Light-colored sunglasses are favored by young people because of their rich colors and diverse styles, and fashionable women love them even more. sunglasses custom Special-purpose sunglasses have a strong function of blocking sunlight, and are often used in the field with strong sunlight such as beaches, skiing, mountain climbing, golf, etc., and their anti-ultraviolet performance and other indicators have higher requirements.

Different groups of people choose sunglasses according to different preferences and different uses, but the most fundamental thing is to start from the basic principles that can ensure the safety of the wearer and the vision is not damaged. Reducing strong light stimulation, clear vision without distortion, anti-ultraviolet, color recognition without distortion, and accurate identification of traffic signals should be the basic functions of sunglasses. If the above-mentioned functions are defective, the effect of sunglasses will be lost in the slightest, and the symptoms of dizziness and swelling of the eyes will be caused. Sometimes there will be unresponsiveness, illusion of color discrimination, unequal vision of walking, and traffic accidents. . Therefore, when choosing sunglasses, you can't just focus on style and ignore its inherent quality.

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