What kind of lighting can protect the eyesight of young children?

What kind of lighting can protect the eyesight of young children? Illumination and visual sunlight and exposed light can produce an uncomfortable dazzling sensation. This is because the photoreceptors on the retina are over-stimulated. Dazzling has an adverse effect on vision, causing decreased visual function, eye fatigue, eyeball tingling, etc. It can also cause headaches in severe cases. Therefore, it is necessary to prevent children from being exposed to unsuitable light levels, and do not allow babies to look directly at the sun and exposed lights. Too much light can damage vision, and insufficient light is also harmful to vision. When the illumination is insufficient, the excitability of the retinal cells cannot be fully stimulated, and the scenery seen by the eyes cannot reach the brain, and it cannot make people excited. The visual process is slow, vision declines, visual fatigue, and the entire nerves. System and body activities are also inhibited. We all have this experience, when the weather is gloomy and dim, the whole person will feel listless. On the other hand, when the sky is high and clear, you will feel refreshed and in a particularly good mood. When the rain is continuous, what people *want to do is sleep to relieve the feeling of visual fatigue. So, what kind of illumination can protect eyesight, but also make people feel clear and happy? There is currently no standard scale, one of the reasons is that everyone's eyes adapt to different ranges. Secondly, there are many factors related to the illumination, such as the image of the object, the environment, the nature of the light, age, and the level of innate vision. However, no matter how many factors there are, proper illumination plays a decisive role in the development of the baby's eyes and vision. Illumination and the size of objects The scenery includes all objects we can see, as well as text. When the object is large, the color is bright, the background and the subject are bright and the contrast is large, the required illumination is small. If the object is small, the color is dim, and the contrast between the background and the subject is small, strong illumination is necessary. The illuminance is closely related to the size of the object. When an object shrinks, the required illuminance increases very much. In order to exercise the baby's vision, we will let the baby see relatively small objects, but if the illumination is increased inappropriately, not only will it not promote the baby's vision, but it will also have an adverse effect. Especially when you let your baby look at pictures and text, not only must strive for clarity, contrast, and bright colors, but also ensure proper illumination. Illumination and the reflection coefficient of the object surface Illumination is related to the reflection coefficient of the object surface. If the reflection coefficient of the object surface is large, the required illuminance is small; if the reflection coefficient of the object surface is small, the required illuminance is large. A large contrast can improve the visual effect, but if the contrast is large and the illumination is relatively large, it will make people feel dazzling and exciting. Therefore, reducing the contrast is also to protect the eyes. The role of illuminance and the surrounding environment The role of illuminance and the surrounding environment is very obvious. We all know that the same lighted candle is just fluorescent dots in the wilderness, but it can almost illuminate the whole house indoors. In the same room, the illuminance of the walls of different colors is also different. The white wall has a large reflection coefficient and the illuminance is increased, which makes the room very bright, while the dark-colored walls make the room darker. A large reflection coefficient can cause glare. In order to avoid glare from the wall, the wall at a height of 1.5 meters from the ground can be painted light yellow or other light colors, so that the reflected light parallel to the eyes becomes diffuse reflection. It seems that painting walls is not only to protect the walls, but more importantly to protect eyesight. The lampshade of the table lamp has two functions, one is to reduce the glare of the light; the other is to increase the illuminance per unit area. (Ruiguang) (Source: Consumer Daily)