Sunglasses

First, sunglasses ProfileSunglasses is a strong incentive to prevent sun damage caused by the human eye vision care products, as people's material and cultural level, but also as sunglasses reflect the personal style of beauty or special jewelry.Second, the advantages and disadvantages of sunglassesAdvantages: 1, nicely decorated 2, 3 blocked the eye defects, eye protection (implicit unloading usurp lens wearers to prevent evaporation) 4, protect eyesight (anti harmful rays) Disadvantages: poor quality of the lens easy to damage the eyes in addition, sunglasses are to protect the mirror, or a few shortcomings.Third, the classification of sunglassesSunglasses can be divided into shade by use of mirrors, light-colored sunglasses, and three types of special-purpose sunglasses.The so-called sun mirror, suggests that it is for shade purposes, people often rely on the adjustment in the sun to adjust the size of the pupil luminous flux, when the light intensity of more than ability to regulate the human eye, it will cause harm to the human eye. So in outdoor activities, especially in the summer, many people use sun mirror to block the sun, the eyes adjust to reduce glare caused by fatigue or irritation caused by the injury.Light-colored sunglasses, blocking the sunlight as the sun mirror, but its rich colors, suitable for use with various types of clothing with, has a strong decorative effect. Light-colored sunglasses because of its rich colors, styles, by the young people of all ages, women's fashion is fallen in love with it. Special purpose sunglasses block the sunlight has a strong functions, commonly used on the beach, skiing, hiking and other outdoor more intense sunlight, the UV performance and other indicators have higher requirements.Different groups of people, depending on the preferences and choose sunglasses for different purposes, but the most fundamental is to protect the wearer from safety and vision does not damage the basic principle. Reduce the light stimulation, visual clarity without distortion, anti-UV, no distortion of color recognition, accurate traffic signal recognition, should be the basic functions of sunglasses. If there are defects in these functions, ranging from sunglasses would not achieve the role of weight will produce dizziness, eye soreness and other symptoms consciously meet, and sometimes slow to react, argue and walk visual color illusion symptoms and lead to unequal traffic accidents and so on. So I chose not to focus only on style sunglasses to the neglect of its intrinsic quality.Fourth, the improper use of common sense to wear sunglasses susceptible to eye, cloudy, and there is no need to wear sunglasses indoors. Some people regardless of settings, regardless of the strength of sunlight, even in the dusk, evening, and in movies, television, also wearing sunglasses, which will inevitably increase the burden on the eyes adjust, causing muscle tension and fatigue, vision loss, visual blurring, in severe cases the first symptom is far usurp flowers. For lack of development of the visual system of infants, children should not wear sunglasses. In addition to glass sunglasses, the other lenses that are not high wear resistance materials, users should always pay attention to the surface of sunglasses, when worn affect clarity, should be replaced.Fifth, the method of a selection of sunglasses, with the face, skin color, work environment, dress to match two, do not wear a halo after the object more clearly see three or prevent ultraviolet four, good sunglasses are supporting the lens case, lens cloth, tag and so on.