zhdety's fashion blog

Sunglasses can be divided into three classes by usages: sun mirrors, light-colored sunglasses, and special-purpose sunglasses.

The so-called sun mirror suggests that it is for the purposes of shading the sun shine. In the sun, people usually rely on adjusting the size of pupil to regulate the luminous flux. When the light intensity is beyond people’ abilities to deal with it, it will lead to great harm to human eyes. So, in outdoor activities, especially in the summer, many people choose to use the sun mirror to block the sunshine, in order to reduce the damage caused by the fatigue or glare.

Light-colored sunglasses are new style of glasses. Its ability of blocking the sunlight is not as same as the sun mirror. But, its rich colors are suitable for various kinds of clothing, which have strong decorative effect. Because of its beautiful color, different kinds of styles, it is chosen by the many young people, especially the young fashionable women.

Special purposes sunglasses has a strong function to block the sunlight, commonly used on the beach, skiing, hiking, golf, and other outdoor activities. Those outdoor activities are with intense sunlight, so the UV performance and other indicators often have higher requirements.

Different groups of people choose the sunglasses depending on personal preferences and requirements for different functions. But the most basic principle is to protect the wearer and to keep vision away from the dangerous. People should know the basic functions of sunglasses, including reducing the light stimulation, visual clarity without distortion, anti-UV, no distortion of color recognition, and the accurate traffic signals recognition. If the sunglasses can not posses the above functions, it will produce dizziness, eye soreness and other eye-related symptoms. And sometimes it will also cause visual color illusion and inequality symptoms, leading to accidents and so on. So choosing the sunglasses should focus on their inherent qualities not only the styles.