SunglassesIs 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 fashion jewelry.

Advantages: 1, decorative appearance, 2, block the eye defects, 3, protect the eyes (contact lens wearers to prevent water evaporation) 4, protection of visual acuity (against harmful rays)

Disadvantages: poor quality of the lens is easy on the eye injury, in addition, sunglasses are protected mirror, or a few shortcomings.

Sunglasses, shade-use can be divided into a mirror, light-colored sunglasses, and three types of special-purpose sunglasses. The so-called sun mirror, suggests that it is used for shade, people often rely on regulation in the sun to regulate the flux pupil size, 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 are using to block the sun visor mirror to reduce eye fatigue or adjust the light stimulation caused the damage.

Light-colored sunglasses for blocking sunlight than shade mirror, but its rich colors, suitable for use with various types of clothing and has a strong decorative effect. Light-colored sunglasses because of its rich colors, various styles, by the young owners of all ages, female fashion is fallen in love with them. Special purpose sunglasses block the sun has a strong functions, commonly used on the beach, skiing, hiking and other outdoor sun more intense, and its UV performance and other indicators have higher requirements.

Different people, depending on the preferences and choose sunglasses for different purposes, but the most fundamental thing is to protect the wearer from safety and with visual basic principle by the injury. Reduce the light stimulation, visual clarity without distortion, anti-UV, no distortion of color recognition, accurate recognition of traffic signals, should be the basic function of sunglasses. If there are defects in these functions, ranging from sunglasses not achieve the role of weight will produce dizziness, eye soreness and other symptoms of self suited, and sometimes slow to react, argue, as the object color illusion and walking, and trigger the symptoms of inequality traffic accidents and so on. So I chose to focus on style sunglasses can not just ignore its inherent quality.