For healthy eyes, choose light-colored sunglasses. Wearing too dark glasses will leave the eyes in a darkroom environment. The pupils will automatically expand in the dark environment. The long-term enlargement of the pupils may cause glaucoma and other diseases. Inferior sunglasses will also cause more ultraviolet rays to penetrate the eyes, which may cause sunlight. Darker glasses make the eye's ability to distinguish color, easy to appear color confusion, resulting in traffic accidents.
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