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      Outdoor activities with sufficient light, in addition to allowing children to exercise as much as possible, can also promote visual development and reduce the risk of myopia. However, there is a slight risk of being outdoors, and that is the possibility of sunburn. Of course, I believe that most parents have already understood the importance of sun protection. When children go out to play, they will remember to apply sunscreen to them and wear sunshade clothing. However, sometimes we neglect to apply sunscreen to our children's eyes. So, why do eyes get sunburned, and what can we do to protect our children's eyes?

UV rays can also damage the eyes

      Ultraviolet rays in sunlight can cross-link collagen in the skin and generate free radicals, resulting in skin darkening, sunburn, and irreversible photoaging. For the eyes, similar damage can occur with frequent exposure to UV rays, but the effects are more immediate.

      For example, the reason we can see is through the lens, a convex lens, that focuses light on the retina to form an image. If the lens becomes diseased and is no longer so clear and transparent, then of course what we see will be affected.

Ultraviolet rays, especially UVA, can pass through the cornea and aqueous humor and be absorbed by the lens, resulting in protein denaturation and coagulation, resulting in turbidity. Moreover, this damage can be accumulated, and a long-term lack of protection may increase the possibility of eye disease in old age.

      So, do sunshades work for children, such as using umbrellas, wearing sun hats, and not letting the sun shine directly on the children's eyes, right? This does have some effects, but we also need to know that light can be reflected and scattered. Walls, floors, glass, etc. can send ultraviolet rays into the eyes, and surfaces with high reflectivity such as sea and snow, it is more harmful to the eyes.

      So how can we protect our children's eyes? Putting sunscreen directly on the eyes is obviously not a good idea, the correct way is to choose the right sunglasses for your child. There are many types of sunglasses, and many products for children are also very fancy, but if you choose the wrong one, it will not play a protective role. Next, let’s talk about the main points of choosing sunglasses. refer to)

Protection is the most important

      Even through glass, people can still be tanned, because UVA has a strong penetrating ability and can penetrate through glass. In order to prevent penetrating ultraviolet rays, sunglasses naturally need to have enough protection. Fortunately, we don't need to know too much professional knowledge, as long as we choose sunglasses with UV400 or UV100% logos, these two logos indicate that the protection of sunglasses against ultraviolet rays can reach nearly 100%, which is enough to play a protective effect.

      If you are not at ease, you can also use the portable banknote verification lamp to take a photo of the fluorescent anti-counterfeiting mark of large-value banknotes through the lens. If the fluorescent anti-counterfeiting mark is not exciting, it naturally means that the lens blocks the ultraviolet rays.

Good size

      There are many types of sunglasses, how should we choose? In addition to prioritizing UV protection, we also have to pay attention to size and shape. Some researchers have carefully measured the sun protection effect of different shapes and sizes of sunglasses and obtained a lot of data. The most useful hint that can be brought to us is that the sunglasses with a larger area and an arc that fit the face shape have the best sun protection effect.

     In fact, this is also very common sense, because if the sunglasses are of the wrong size and the area is too small, even if the lenses can withstand UV rays, the light will leak everywhere. For children, it is more important to choose children's sunglasses of the right size, and not just use adult sunglasses.

Careful color choice

     When buying sunglasses, we will find that there are many colors of lenses, so which colors will be better? In fact, the choice of sunglasses color is mainly related to the occasion of use. Choosing the right color can make the wearer see more clearly instead of the opposite. For example, when we are driving, if we wear sunglasses with green and blue lenses, it may make it difficult to distinguish the color of the signal light when passing the traffic light, which brings safety hazards. Like other water sports, ice and snow sports also have their own suitable colors of sunglasses.

      However, if it is worn by children, it is mainly used for ordinary outdoor activities, gray, tawny (brown), and green. These three options are the most versatile and suitable for playing anything.

Polarized light is useful but not necessary

      Nowadays, many sunglasses are often polarized, which is called "polarized sunglasses". This kind of sunglasses can eliminate the glare reflected from the glass and water surface so that the picture you see is softer and clearer. This kind of lens is used in many occasions such as driving and fishing that need to eliminate glare. For children, it is not bad to have it or not, so there is no need to pursue it deliberately.

      It should be noted that for children, the light transmittance of sunglasses is preferably between 18-30%, which can not only ensure the sunscreen effect but also have enough light to stimulate the child's vision development. The polarizer needs to add a layer of polarizing film between the lenses, which will cause the light transmittance of the lens to decrease. Therefore, when choosing polarized sunglasses, pay attention to confirming the light transmittance. For adults, there is no such restriction. Be careful not to choose sunglasses with too low light transmittance when driving (for example, the light transmittance used in ice and snow projects is only 5%), so as not to affect the observation and cause danger.

Simple and safe, don't be fancy

      Many so-called "children's sunglasses" often don't work hard on safety and protection performance, but put a lot of effort into the appearance, making them garish and dazzling. Don't buy this type of product just because your child is attracted to the fancy shape. On the one hand, most of these exaggerated children's sunglasses are not produced by regular manufacturers, and the protective performance is difficult to guarantee. On the other hand, complicated decorations are easy to block children's sight, and they are more prone to scratches and bumps, which are potential safety hazards.

      Qualified children's sunglasses from big brands are usually very simple and smooth in shape, fit the baby's head shape, and use softer, less-breakable materials to ensure safety. In the Yuxueyuan mall, there are a variety of sunglasses that meet the protection standards and are suitable for children. Interested friends can enter the Yuxueyuan APP mall to search and buy by themselves.

      Although sunglasses are good, some babies may resist wearing sunglasses. At this time, adults need to think of a way. You can try this:

Lead by example and wear it yourself, babies tend to imitate out of curiosity

Take your baby to an optician or sporting goods store and let him choose the colors he likes

When the baby wears sunglasses, take a picture and show him that he is cool

If your baby is having a hard time accepting sunglasses, cover them up and avoid going out in strong sunlight