Wearing Sunglasses Outdoors Does Not Affect Children's Vision Development
Jan 20, 2022
Sunglasses block UV rays. The colors are different, there are 0-4 shades, and the filtering rate of visible light is different, and it does not completely block visible light.
We most commonly use 3 shades, mostly amber or brown, 9-18% of visible light will pass through sunglasses, mainly worn in strong light (summer noon and seaside). If it really affects the visual development of children, it is necessary to completely block the light, such as ptosis and cataracts. Take children with amblyopia as an example, completely covering the "healthy eye" for 12 hours a day, at least 6-12 weeks, will gradually affect the vision of the "healthy eye".
Wearing sunglasses outdoors does not affect children's vision development
Sunlight can prevent myopia, but also wear sunglasses. Based on epidemiological research, Ian Morgan, a myopia scientist at the Australian National University, estimates that to prevent myopia, children need to be active for 3 hours a day under 10,000 lux of light, which is equivalent to bright summer, shade, wearing sunglasses. light brightness. This side shows that sunglasses do not hinder vision development! Wearing sunglasses can also prevent myopia in children!
Therefore, parents, please rest assured to wear sunglasses for children in summer. Considering the difficulty of fixing frame glasses on the face of small babies, babies under 6 months old can not wear them, and wide-brimmed hats and stroller awnings can be covered. Live in direct sunlight. Standard sun protection for babies over 6 months of age: a wide-brimmed hat and sunglasses with an elastic headband.
In fact, cheap sunglasses can also filter UV rays. At present, the material of sunglasses is mainly polycarbonate (PC), which can block 100% of ultraviolet rays by itself, and the surface coating is anti-scratch, not sunscreen. Don't buy $10 sunglasses for kids, because the paint on cheap sunglasses may contain lead, which is not good for kids.
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