In real life, many people only wear sunglasses for travel, driving, and foil. This idea is wrong. Studies have found that nearly 30% of solar radiation passes through the atmosphere, especially ultraviolet rays with a wavelength greater than 315 nanometers are the most harmful to the eyes; therefore, good sunglasses can reduce the light transmission and filter out more than 90% of visible light, which is very harmful to the eyes. Good protection. Next, Baili Glasses will teach you how to select sunglasses, hoping to bring you some help.

　　1. Brand and price

　　The price of sunglasses of different brands is different, such as Mosen, Ray-Ban, Tyrannosaurus, Top People, Baosheng, etc., their prices are different, as the saying goes: "Buy the good ones, not the expensive ones. "We recommend that you buy glasses with high-cost performance, and don't buy thousands or even tens of thousands of sunglasses because of your face. This is not cost-effective. Here we also have to remind everyone that some people are greedy for cheap and buy some fake sunglasses of more than ten or twenty dollars. Although the price is cheap, the damage to the glasses is indeed accumulating. The quality of sunglasses can be guaranteed, and they can be used without any worries.

　　2. Color

　　With the different seasons, the color of sunglasses should be different accordingly. In summer, blue, green, or brown lenses are generally used; in winter, the snow is highly reflective, preferably yellow, brown, or gray lenses. The stronger the light, the better to wear dark sunglasses. You can choose the one you need according to your seasonal needs. Lens color.

　　3. Lens material and quality

　　The choice of lens material should be based on age, occupation, activities often engaged in, and preferences. The glass lens has high hardness and is not prone to scratches, but it is easy to be broken. To achieve the polarization effect and filter out the reflection of sunlight, it is best to choose glass polarized lenses. The resin lens is light in weight and not easily broken, but it has low hardness and is prone to scratches. Because most children are naughty and playful, and eye injuries often happen due to broken lenses. Therefore, children should choose resin tablets. There are also memory nylon lenses that are also a very good choice, with ultra-lightweight, superb optical performance, and 100% UV protection. The surface of the regular and excellent lens is smooth, and has no ripples, flaws, bubbles, and wear marks. Everyone picked up the spectacle lens and lay it flat, looking at it from the horizontal direction to see if there is any warping. If you find that the lens is uneven or has marks or bubbles, it is not suitable to buy.

　　4. Face matching

　　Choose sunglasses based on your face shape. Many people don’t care about this problem. They think that as long as the sunglasses they like are fine. This is wrong. You should choose sunglasses that suit your face shape so that they look good. Also more comfortable. People who drive for a long time should pay more attention to this point, or it is easy to cause eye fatigue and discomfort.

　　5. Mirror frame

　　The choice on the frame is to choose a light frame. Many people like glasses with large frames. They think that this is a style and personality. This is not scientific. The weight of the glasses is relatively heavy and it will be oppressive if worn for a long time. Sense, fatigue. We recommend choosing rimless sunglasses, especially for those who drive for a long time.

　　Precautions

　　Children can wear kids sports sunglasses. Children’s eyes are delicate and easily damaged by strong light. In this sense, children need to wear kids' sports sunglasses, but it should be noted that children under 6 years of age are not suitable for long-term wearing sunglasses. Because their visual function development has not reached the adult level, wearing sunglasses for a long time may cause amblyopia. Therefore, the correct way is to put it on your child when the sun is strong and take it off when the sun becomes weak.