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Reasons for wearing sunglasses
Jun 13, 2018

Eye experts recommend that sunglasses must be worn frequently to protect the eyes; this is because our eyeballs (lenses) are very easy to absorb ultraviolet light, and the UV damage has two prominent features:

1, UV damage can accumulate. Since ultraviolet light is invisible light, it is difficult for people to intuitively feel.

2, UV damage to the eyes is irreversible, that is irreparable. For example: cataract surgery can only be replaced by an artificial lens. Prolonged exposure of the eyes to the eye can lead to damage to the cornea and retina. The lens is cloudy until it triggers a cataract, resulting in permanent vision damage.

Because ultraviolet radiation is invisible to the eyes, it is not immediately obvious. If you do not wear glasses, you do not feel particularly uncomfortable. It just means that your eyes are not very sensitive to visible light (such as glare, glare, or reflected light). , and can not avoid ultraviolet damage.

Is the darker the color of the sunglasses, the better the UV blocking effect?

No! The function of the lens to block ultraviolet rays is that due to its special processing (addition of uv powder) in the manufacturing process, the lens can absorb harmful light such as ultraviolet rays below 400 nm when the light penetrates. It has nothing to do with the depth of the film.

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