In the hot summer days, the sun is like a fire, and it can't stop the children's curiosity and enthusiasm for outdoor activities. Ma certainly hopes that the baby can play, but at the same time there will be some concerns. Such strong light, adults feel glare, the baby's eyes will not be hurt, there are no protective measures to prevent the baby's eyes from being directly exposed to the sun. To effectively prevent UV rays from harming your baby's eyes? The treasure moms easily thought of sunglasses. So, how should children's sunglasses be chosen and used?
01 Do children need to wear sunglasses? why?
In general, the physiological development of children's eyes is not perfect, and the pupil's response to light stimulation is not as good as that of adults. A certain degree of bright light and clear image can help children to judge the light intensity and optic nerve regulation ability, which can promote the development of children's visual ability. However, if the degree of ambient light changes too much, especially in the summer, the ultraviolet rays are more intense outdoor activities, which can cause excessive adjustment of the pupil, fatigue of the eye muscles, dry eyes, itching, pain, and even light ophthalmia, such as conjunctivitis. Keratitis, etc., often become a risk factor for the baby to have problems such as amblyopia and cataract in the future, and once it is present, it is more difficult to correct, and even irreversible eye diseases may occur.
Wearing a baby's sunglasses can prevent glare from directly irritating the eyeball, relieve the pressure on the pupil, and reduce the discomfort of the child's eyes suddenly touching the glare. At the same time, a qualified child's sunglasses can also effectively filter harmful components in the light, especially blocking the ultraviolet rays on the retina. The damage of the lens can provide a relatively stable environment for protecting children's eye development.
02 Wearing sunglasses will affect your child's eyesight?
The standard for detecting children's sunglasses includes the top power, the prism, the visible light transmittance, etc., and the top power is the requirement for the degree of sunglasses. Sunglasses belong to the flat mirror, the deviation value will not affect the child's vision, but if the product is not qualified with the degree, the child is more harmful when worn for a long time.
Can I wear sunglasses for more than 03 years old?
Children's vision is in a developmental process and a process of adapting to the external environment. From the perspective of children's visual development cycle, 6-year-old children are basically close to adults. At this time, it is more reassuring to wear sunglasses. However, if children are 3-5 years old, although the eye development has not reached the adult level, the development is basically stable. The external environment's stimulating response has certain adaptability. Wearing sunglasses can improve the exposure of the eyes to the sun when playing in a strong light environment.
For infants younger than 3 years old, due to the unstable physiological development of the eyes and the influence of external stimuli, it is generally not recommended to wear sunglasses, and it is not recommended for children under the age of 3 to perform outdoor activities during periods of strong sunlight. Going out to play, it is best to choose before 10 am, and after 4 pm, to help the baby adapt to the external environment and meet the requirements of photosynthesis during the growth and development of the body, as well as avoid excessive light and excessive temperature. Adverse effects on your baby.
04 Is there a limit to the environment and the duration of wearing sunglasses?
Children wear sunglasses mainly to reduce the irritation and radiation of strong light to the eyes, so it is more suitable to wear in the environment with high light intensity and strong light wave radiation, such as the afternoon when the sun is shining and the summer when the light is strong. In addition, if you travel in snow, beach, Gobi, ocean and other relatively empty, rare vegetation, or in a geographical environment with high altitude and close to the sun, and stay longer, children can not only wear sunglasses Avoid too much light and block harmful light, and reduce the eyes from frost, sand, waves and so on.
Children should not wear sunglasses for too long, it is best to control within 2 hours. After all, sunglasses are artificially added to the eye as a protective umbrella. They cannot be relied on for a long time, affecting the mutual integration and balance between the body and the natural environment. Appropriate protection can improve the body's irritating response to the outside world. If it is too dependent on it, it will also cause discomfort in the eyes, such as acidity, swelling, pain, etc. Moreover, it will easily cause skin damage when exposed to strong light for a long time. Injury, excessive ultraviolet rays can easily burn the skin, destroy skin protection factors, and can cause a skin rash, itching, and even blistering and suppuration.
05 Choose sunglasses for children, what are the precautions?
Buying sunglasses can't just consider beauty, the safety and function of sunglasses are the most important.
Must be purchased in a regular store, can provide detailed manufacturer information and product structure, material characteristics, and usage precautions. A pair of qualified children's sunglasses need to block 95%-100% of UVA and UVB, filter 75%-90% of visible light, and a pair of unqualified sunglasses is not only useless and harmful, because when wearing sunglasses, baby The pupil will expand. If the sunglasses do not have the function of blocking ultraviolet rays, more harmful light will enter the baby's eyes, and the inferior lens thickness is different, and the color is uneven, which may cause visual damage.
In terms of lens material, polycarbonate is an ideal material, mainly lightweight, good impact resistance, high light transmittance and 100% UV protection. Of course, the best lens material at present is NXT, which is a high-grade urethane polymer. The disadvantage is that it is too expensive.
The colors are mainly gray and brown. These two colors are currently more suitable for children to wear, because the deviation of the color of the object is relatively small, and the weakened light does not change the original spectrum distribution. Light stimulates the development of the macula of the eye.
When you try on it, you can choose to look at the distance from farsightedness and nearsightedness to see if it is clear and whether there is any deformation. Whether the color of the red, yellow or green light of the traffic light is clear, you can walk a small distance, whether there is a sense of vertigo, and whether the ground plane has a concave and convex feeling. Is it convenient to walk?