Children’s sunglasses, as the name suggests, are designed to protect your child’s eyes from the glare or invisible harmful UV rays.
The purpose of wearing sunglasses is to protect the eyes from the glare or invisible harmful ultraviolet rays. But if you choose improperly, it will be counterproductive. So what kind of sunglasses are you using?
1. When purchasing sunglasses, you should first use a firmer one. The color of the lens is gray or smoked. They cause the smallest color distortion and the best color, followed by green or brown. Orange, yellow, red, blue or blue-purple, etc., because their color is poor, especially affecting the recognition of traffic lights, easy to the accident, it is best not to use.
2. The best protective lens should be made of high-quality optical glass or plastic. Plastic is more resistant to impact than glass, but the disadvantage is that the surface is easily worn. When buying a flat mirror, you can check the lens for scratches, textures, bubbles, spots and other defects. The test method is: holding the mirror at a distance from the half arm, and visually observing objects such as doors and windows with vertical and horizontal lines, slowly moving up and down, left and right, and if the lines of the object fluctuate, it indicates distortion. However, lenses for correcting vision cannot be tested in this way, because some distortions are used to correct vision. In addition, check the color and depth of the two lenses. Otherwise, it will affect the sense of distance and make the eyes feel tired.
3. The frame should be made of strong plastic or metal, and the ears, nose, and temples should be comfortable when worn. Dark frames are better than light ones because the brightness of a light frame can damage your vision.
In addition to the selection, there are also precautions for use:
Sunglasses are not easy to wear eyelids when wearing them properly. It is not necessary to wear sunglasses when the light is dark in cloudy or indoor conditions. Some people, regardless of the occasion, regardless of the intensity of the sun, even wearing sunglasses at dusk, evening, and watching movies and television, will inevitably increase the burden of eye regulation, causing eye muscle tension and fatigue, making vision loss, visual The object is blurred, and symptoms such as dizziness and vertigo may occur in severe cases. For infants and children whose visual system is not perfect, sunglasses should not be worn. In addition to the glass sunglasses, other sunglasses lens materials are not wear-resistant, users should always pay attention to the surface of the sunglasses when the wear affects clarity, should be replaced in time.
Therefore, children’s sunglasses are not simply bought and bought, but they should be carefully purchased. Parents and mothers should carefully purchase them, and they should tell the children if they are wearing and should pay attention to the situation.